20 points! science
A heating element being placed in one end of an aquarium can heat the whole aquarium because of heat transfer by convection conduction radiation evaporation

Answers

Answer 1
Answer:  Convection

Explanation
(a) It is not conduction
Water is not a good conductor of heat because it has large thermal mass, and it does not sustain large temperature gradients.

(b) It is not radiation
Water undergoes phase changes at 0°C and 100°C. An aquarium does not run at these temperatures. Between these temperatures, the driver for radiative heat transfer between different temperatures in the aquarium will not be significant.

(c) It is not evaporation
Ambient temperature around the aquarium will probably be in the range 20°C o no more than 27°C. The temperature difference between aquarium temperature and ambient temperature will be insignificant, and cannot heat an aquarium.

(d) It is convection
As regions near the heater rise in temperature, convectional flow currents drive warm water toward cold water regions.due to diffusivity. Although it will take some time, the tendency for water in the aquarium is to move toward an equilibrium temperature. 

Related Questions

Which is not a process involved in the formation of sedimentary rock?
a:weathering
b:compaction
c:deposition
d:extrusion

Answers

Extrusion is NOT a process involved in the formation of sedimentary rock.

Answer:

d:extrusion

Explanation:

Extrusion has nothing to do with the formation of sedimentary rock, since it is a process of building objects with a defined and fixed cross section. The material is extracted using a die with the cross section to be made. This process allows the creation of complex cross sections with brittle materials, since the material only finds compression and cutting forces.

anonymous 4 years ago The turbidity levels of water in four locations are shown in the table below. Which of these conclusions is most likely correct about the people in the four locations? a. People in Location A would reduce their water consumption. b. People in location B would use only bottled water for drinking purposes. c. People in Location C would complain about foul odor and taste in water. d. People in Location D would observe the least amount of contaminants in water

Answers

People in the four locations would complain about the taste and odor of the water due to the turbidity levels of the water.

What connection exists between water quality and T-turbidity?

Particulate matter levels beyond a certain threshold have an impact on light transmission, ecological productivity, recreational appeal, habitat quality, and lake filling rates. Increased sedimentation and siltation in streams have the potential to affect fish and other aquatic life habitats. Additional contaminants, including as metals and microorganisms, can cling to particles. As a result, turbidity readings can be used as a sign of possible pollution in a body of water.

What is turbidity?

Turbidity is a metric for a liquid's relative clarity. It is a measurement of the amount of light scattered by the components of water when light is shone through a water sample. It is an optical property of water.

To know more about Water pollution, visit-https://brainly.com/question/19920929

#SPJ2

Which of the following is a lower body stretch , biceps curl,
Arm circle,
Quadriceps stretch,
Trunk twist

Answers

quadriceps stretch is a lower body stretch 

A –4.0-µC charge is located 0.45 m to the left of a +6.0-µC charge. What is the magnitude and direction (to the right or to the left) of the electrostatic force on the positive charge?

Answers

Attraction (right?), so the + charge will try to go to the - charge. Force on  + charge will be directed towards left. The magintude is Coulomb's law:

F = k * Q1*Q2/d^2, K = 9*10^9, Q1 = -4*10^(-6), Q2 = 6*10^(-6), and d = 0.45

-9*4*6*10^(-3)/0.45^2 = -1.0633 N, but check it (sign means attractive).

Some teachers prefer to say that magnitude is always positive, like in math, so 1.0633 N but then say attractive and directed to the left of the + charge, to make sure no one can complain you miss anything! Ask your teacher

Because of negative side the direction of Electrostatic force  will be right to left that means to the left

Magnitude of Electrostatic force will be = 1.0667 N

What is electrostatic force ?

The electrostatic force  is an attractive and repulsive force between charged particles . The electric force between stationary charged bodies conventionally known as electrostatic force .

q1 = –4.0 µC

q2 = +6.0 µC

r = 0.45 m

k= 9 * 10 ^ 9

(E) Electrostatic force = k *q1* q2 / r^2

E = (9 * 10 ^ 9) *( –4.0) * ( +6.0)  / (0.45)^2

E = - 1066.67 * 10 ^ (-3)

Electrostatic force = - 1.0667 N

Because of negative side the direction of Electrostatic force  will be right to left that means to the left

magnitude of Electrostatic force will be = 1.0667 N

learn more about  Electrostatic force

https://brainly.com/question/9774180?referrer=searchResults

#SPJ3

What is an inelastic collision?

Answers

Answer:

An inelastic collision, in contrast to an elastic collision, is a collision in which kinetic energy is not conserved due to the action of internal friction. In collisions of macroscopic bodies, some kinetic energy is turned into vibrational energy of the atoms, causing a heating effect, and the bodies are deformed.

Explanation:

Which of the following could negatively affect the reliability of an experiment? A.testing only one variable at a time
B.having variables that are difficult or even impossible to control
C. keeping the control monitored to make sure it remains unchanged

Answers

The answer to this is B. When conducting an experiment, you should only manipulate one variable at a time and all other variables should be kept as similar as possible in order to ensure that the results are caused by one thing and not another.

B) Having variables that are difficult or even impossible to control.

what was Galileo’s contribution to the study of motion?

Answers

Galileo Galilei was the first to systematically study force and motion.

He began doing so by conducting experiments to search for the cause of motion.



- Marlon Nunez

ana exerts a force of 20 n on a volleyball that has a mass of 0.15 kg what is the force that the volleyball exerts on ana

Answers

Answer:

the answer is -20 N i am doing the review right now and i got it right hope this helps man

Explanation:

Which of the following is a benefit of space exploration?

Space exploration has lowered taxes.
Space exploration has helped Florida’s economy.
Space exploration has made some people famous.
Space exploration makes people want to go to outer space.

Answers

the second one is the answer
hope this helps
Final answer:

Space exploration has helped Florida's economy and inspires people to want to go to outer space.

Explanation:

The benefit of space exploration is that it has helped Florida's economy, made some people famous, and has inspired people to want to go to outer space. For example, the Kennedy Space Center in Florida has attracted tourism and created jobs, boosting the state's economy. Additionally, astronauts like Neil Armstrong and Buzz Aldrin gained fame for being the first humans to walk on the moon, which brought attention and interest to space exploration.

Learn more about Benefits of Space Exploration here:

https://brainly.com/question/1979086

#SPJ12

Compare and contrast the differences in a persons cardiovascular fitness between an exercise program that utalizes the progression principle and one that does not.

Answers

People who utilizes the progression principle will ensure their exercise program increases in frequency, intensity, time, and type. The changes need to happen gradually in order to ensure they make gains in their fitness program. A person who doesn't utilize the progression principle can still gain health benefits from exercising, but will not continue to improve in cardiovascular fitness.

Progression is the classic increase in the fitness of the individual which is essential to achieve fitness goal.

Further Explanation:

Respiratory and circulatory system works together as a coupled unit for delivering oxygen and nutrients to the other part of the body and take away carbon dioxide and waste from the body to support homeostasis. The main purpose of the cardiovascular system is to support the adequate blood flow and supply adequate amount of nutrient to all body tissue and cells and also help in regulating the body temperature.

During physical exercise, the oxygen demand of the muscle tissue increase by 15 to 25 time than normal or rest condition because the more energy is required. A hormone also helps in controlling a number of physiological reactions such as energy formation, reproductive processes, tissue growth and degradation of the muscle protein.

Progression is the classic increase in the fitness of the individual which is essential to achieve fitness goal. When an athlete starts its practice by running in the morning he complete the round in few min. but with each day and session he is able to cover more around in shorter time because he starts to overload himself with each session which is necessary to develop physical fitness.  

Learn More:

Learn more about meiosis https://brainly.com/question/1600165 Learn more about the process of molecular diffusion in a cell https://brainly.com/question/1600165 Learn more about human sperm and egg cell https://brainly.com/question/1626319

Answer Details:

Grade: High School

Subjects: Health

Topic: Physical Fitness

Keywords:

Cardiovascular, exercise, respiratory, circulatory, nutrient, homeostasis, physical, hormones, physiological, degradation, anabolic, catabolic, energy.

objects that exhibit projectile motion follow what kind of path

Answers

They follow a parabolic path.

Answer:

Parabolic

Explanation:

The projectile motion is the example of two dimensional motion under the influence of gravity.

The general equation of projectile motion is

y = x tan theta - gx^2/ 2u^2 cos^theta

It is the quadratic equation in x which shows that it is the equation of a parabola.

in a star's cycle, which of the following can be thought of as opposites

Answers

Since there are no choices given, I will explain the cycle of a star. The beginning development of a star is marked by a supernova explosion, with the gases present in the nebula being forced to scatter. As the star shrinks, radiation of the surface increases and create pressure on the outside shell to push it away and forming a planetary nebula or white dwarf. The star is a ball of hot gases containing different kinds of elements at different cores. It has a very high temperature that radiates all throughout the Milky Way galaxy. The star has four main parts; the core, photosphere, chromospheres and corona. The outer core of a star located at the chromospheres contains mostly of hydrogen. Inside the hydrogen is helium then carbon, oxygen, neon, magnesium silicon and the inert gas. When a star releases energy it is due to the thermonuclear fusion of hydrogen into helium. 

For adults, the RDA of the amino acid lysine is 12 mg per kg of body weight. How many grams per day should a 78kg adult receive?

Answers

RDA stands for Recommended Daily Allowance. To determine the amount needed of a certain adult per day, we simply multiply the mass of the adult to the value of RDA. For this case, we do as follows:

Daily requirement = 12 mg/kg ( 78 kg ) = 936 mg of lysine = 936000 g

If 60 lbs of force must be applied to the valve for it to open, how much upward force must push rod X apply for the valve to open?

Answers

i think is 15 or 20 im not sure

Answer:

It must push 40 lbs of force to open the valve.

Explanation:

The momentum at one end of the pivot must be equal to the momentum at the other end. Assuming the 60 lbs of force (F1) is applied at 2 inches from the pivot (d1) and the upward force (F2) is applied at 3 inches from the pivot (d2), then:

F1*d1 = F2*d2

Solving for F2 we get:

F2 = F1*d1/d2

F2 = 60*2/3 = 40 lbs of force

An arrow is shot from a bow at 20.0 m/s at an angle of 65º above the horizontal. The arrow leaves the bow at a height of 1.80 m. At what height will it strike a wall that is 10.0 m away? (Remember to connect the two motions of the arrow using time.)

Answers

In vertical motion the arrow will be accelerating so we can use equation of motion 
but first we need to find initial vertical and horizontal velocity

Horizontal velocity
cos65=x( horizontal)/20
x=8.45m/s 
Thus now we can calculate time after which it strike the wall
8.45=10/t
t=1.18 s this speed in horizontal will remain constant
vertical intial velocity
sin65=y(vertical)/20
y=18.13 m/s
use the equation of motion to calculate height
s=ut+1/2 at^2
s=(18.13)(1.18)+ 1/2 (-9.8)(1.18^2)
s=21.40-6.822
s=14.58 m
but as it is already 1.80 above ground  
So
The height of wall be =14.58+1.80=16.38m
ANSWER 16.38 meters

The height it will strike a wall that is 10.0 m away will be 16.38 meters.

How to find the heigth of the wall?

In vertical motion the arrow will be accelerating so, we can use equation of motion, but first we need to find initial vertical and horizontal velocity

Horizontal velocity

cos65 = x( horizontal)/20

x = 8.45m/s

Now we can calculate time after which it strike the wall

8.45=10/t

t = 1.18 s this speed in horizontal will remain constant

The vertical intial velocity

sin65 = y(vertical)/20

y=18.13 m/s

Then use the equation of motion to calculate height

s=ut+1/2 at^2

s=(18.13)(1.18)+ 1/2 (-9.8)(1.18^2)

s=21.40-6.822

s=14.58 m

Since it is already 1.80 above ground  

The height of wall be =14.58+1.80=16.38

Therefore, the height it will strike a wall that is 10.0 m away will be 16.38 meters.

Learn more about the concept here;

https://brainly.com/question/8858237

#SPJ2

The bending of light as it passes from one medium to the next is

Answers

This is called refraction. Some common examples of refraction are a straw appearing bent or cut once it enters water in a glass.

explain how the metric system is based on a system of tens

Answers

Every metric unit is based of tens such as centimeters there's 100 cm in one meter. Meter is the base line and the other measure meets are bigger or smaller by powers of ten. A centimeter is 100 times smaller than one meter

Final answer:

The metric system is based on a decimal system with fundamental units meter, kilogram, and second, allowing for easy conversions using powers of ten and consistent measurements for objects of all sizes.

Explanation:

The metric system is structured on a base-10 or decimal system, where each unit is a power of ten of the fundamental units for length, mass, and time, which are meter (m), kilogram (kg), and second (s), respectively. In this system, converting between units is as simple as moving the decimal point to the right or left. For example, 1 meter equals 100 centimeters and 1 kilogram equals 1000 grams, illustrating the system's reliance on multiples of ten.

Moreover, the metric system incorporates a set of prefixes to indicate multiples and submultiples based on factors of 10, such as kilo- (1000), centi- (1/100), and milli- (1/1000). This versatility allows easy conversions and ensures consistent measurements for objects of varying sizes, from very small (like a cell) to very large (like a planet).

A sample of an unknown liquid has a volume of 24.0 mL and a mass of 6 g. What is its density? Show your work or explain how you determined this value.

Answers

i think this might be the answer let me know 0.2 g/cm^3

Answer: 0.25 grams per milliliter

Explanation:

The formula to calculate the density is given by :-

[tex]\text{Density}=\dfrac{\text{Mass}}{\text{Volume}}[/tex]

We are given that the volume of liquid is 24.0 mL.

Mass = 6g

Now, the density of liquid is given by :-

[tex]\text{Density}=\dfrac{6}{24}\\\\\Rightarrow\ \text{Density}=0.25\ g/ml[/tex]

Hence, its density = 0.25 grams per milliliter.

Which of the following is the tendency for a material to oppose the flow of electrons and change electrical energy into thermal energy?

A. resistance

B. volts

C. Ohms

D> electric current

Answers

A. Resistance, is the tendency for a material to oppose the flow of electrons, the reason it isn't electric current, is because that is the general flow of electric charges in one direction.

Answer:

The correct answer is option A.

Explanation:

Resistance :It is a measure of the opposition against the flow of electric current in an electric circuit.It is also defined as ratio of voltage applied to the current. It is measured in Ohms.

[tex]Resistance(R)=\frac{Voltage(V)}{Current(I)}[/tex]

Voltage is defined as work done to move an unit charge from one point to another against the electric field.it is measured in Volts.

Current is defined as flow of electrical charges through an electrical circuit.It is measured in ampere.

Which factors improve soil fertility? Select the three correct answers. A. Humus B. Bedrock C. Horizon D. Nitrogen E. Manure

Answers

Correct answer choices are :

A) Humus

E) Manure

D) Nitrogen


Explanation:


Soil fertility leads to the capability of a soil to support agricultural plant growth, i.e. to produce plant environment and occur in continued and steady yields of high quality. A fertile soil will include all the important nutrients for basic plant nourishment, as well as other nutrients required in smaller amounts.

Answer;HumusManureNitrogenExplanation;Soil fertility is a characteristic of soil that refers to the capability of soil to maintain and provide a suitable habitat for growth of agricultural crops, thus resulting to continuous productivity. The fertility of soil may be influenced or enhanced by various factors which includes, the soil structure, organic matter, soil pH, and water retention among other factors. Humus, nitrogen, and manure are among the factors that boosts or improves soil fertility, and thus enhances growth and sustainability of agricultural crops by the soil.

All of the following examples involve chemical energy except: A.working muscles using food b.burning a candle c.lightng a match .d.coasting downhill on a bike

Answers

The answer for this question is C

A 9 V battery is connected in series to four resistors as follows: R1 = 2 Ω, R2 = 4 Ω, R3 = 4 Ω, and R4 = 8 Ω. What is the total resistance of the circuit?

A. 0.5 Ω
B. 9 V
C. 18 A
D. 18 Ω

Answers

Since the four resistance are connected in series, the total resistance is sum of individual resistances.
Total resistance= R1+R2+R3+R4 = (2+4+4+8)Ω = 18Ω
18 A is not the answer because A stamds for Ampere whivh is SI unit of electric current.
Answer is option d

Which of the following describes the difference between the classes of levers? 1 the difference in effort force 2 the difference in resistance force 3the placement of the fulcrum 4 the placement of effort force, resistance force, and fulcrum

Answers

number three is the answer im pretty sure

Answer:

The placement of effort force, resistance force, and fulcrum.

Explanation:

The placement of effort force, resistance force(which is the load to be moved), and fulcrum differentiates between the classes of levers.

Levers are divided into three classes and they are the first class, second class and third class lever. This machines are differentiated from one another depending on the position of their effort(E), Load applied(L) and the fulcrum (L).

For first class lever, the fulcrum is in between the load and the effort e.g a see-saw, scissors etc

For second class lever, the load is in between the fulcrum and the effort e.g a wheel barrow

For third class lever, the effort is in between the fulcrum and the load e.g a stapler

The Drake equation calculates the number of technically advanced civilizations in the galaxy as a product of seven factors: R* fp ne fl fi fc L. In the sample calculation in the text, these values are taken as 1 × 1 × 0.1 × 1 × 1 × 1 × 100 = 10. If we were to redo the calculation, increasing each increasable factor by a multiple of ten, what would the result be?

Answers

The Drake equation calculates the civilization parameter as
R*fp*ne*fl*fi*fc*L = 1 x 1 x 0.1 x 1 x 1 x 1 x 100 = 10.

If each increasable factor is multipled by 10, the result will be
(1*10) x (1*10) x (0.1*10) x (1*10) x (1*10) x (1*10) x (100*10)
= 10 x 10⁷
= 10⁸

Answer: 10⁸



what are the characteristics and phases of the moon

Answers

crescent, gibbous, waxing, and waning.

A cheetah runs with a constant speed of 8 m/s. How far has the cheetah gone after 25 seconds?

Answers

Multiply 25 * 8 = 200
So the cheetah has gone 200 miles in 25 seconds
200 meters.

In one second, a cheetah runs 8m/s, so multiply 8 by 25.

8 x 25 = 200

A boy of weight 500 N has feet with a total area of 200 cm2.
What is the pressure between him and the ground if he stands on both feet?
solution must be with formula.

Answers

Final answer:

The pressure between a person and the ground when standing on both feet can be calculated using the formula: Pressure = Force / Area. By substituting the given values into the formula, we can determine the pressure to be 25000 Pa.

Explanation:

The pressure between a person and the ground when standing on both feet can be calculated using the formula:

Pressure = Force / Area

Given that the weight of the boy is 500 N and the total area of his feet is 200 cm², we can substitute these values into the formula:

Pressure = 500 N / 200 cm²

Now, convert the area to square meters to maintain consistent units:

Pressure = 500 N / (200 cm² x (1 m/100 cm) x (1 m/100 cm))

Pressure = 500 N / 0.02 m²

Pressure = 25000 N/m² or 25000 Pa

So, the pressure between the boy and the ground when he stands on both feet is 25000 Pa.

Pls help with this question

Answers

melting bcz u can freeze it again?
it is either sound or heat production , it is not melting because you cannot freeze it back to the exact way it was .

A 2-kg object is moving horizontally with a speed of 4 m/s. How much net force is required to keep the object moving at this speed and in this direction?

Answers

answer=0N
it is because an object in motion maintains its steady motion(law of inertia).the presence of an unblanced fource change the velocity of object
Final answer:

To maintain the constant velocity of a 2-kg object moving horizontally at 4 m/s, no net force is required as per Newton's first law of motion.

Explanation:

The question asks how much net force is required to keep a 2-kg object moving horizontally at a constant speed of 4 m/s. In physics, especially when discussing Newton's laws of motion, if an object is moving at a constant velocity, the net force acting on it is zero. According to Newton's first law of motion (also known as the law of inertia), an object will continue to move at its current velocity unless acted upon by a net external force. Therefore, if the 2-kg object is moving horizontally at a steady speed and is not accelerating, the net force required to maintain that steady motion is 0 Newtons.

Learn more about Net Force here:

https://brainly.com/question/41924667

#SPJ3

A scientist adds heat to each of the following substances. Which will probably absorb the most heat before its temperature changes significantly? 50 g of solid copper 50 g of solid iron 50 g of liquid water 50 g of sand

Question 2(Multiple Choice Worth 2 points) A drop of water placed on a smooth, dry surface will form a dome-shaped droplet instead of flowing outward in different directions. Which of these best explains this observation? The bonds between hydrogen and oxygen atoms are very strong. The electrons in the atoms attract the electrons in the other atoms. Water molecules at the surface experience fewer hydrogen bonds than water molecules within the liquid. Water molecules near the surface produce more buoyant force than water molecules within the liquid.

Question 3(Multiple Choice Worth 2 points) Which of these best explains what happens when the ionic substance calcium chloride (CaCl2) dissolves in water? The oxygen atoms in the water molecules are attracted to the Ca2+ ions. The oxygen atoms in the water molecules are attracted to the Cl− ions. The hydrogen atoms in the water molecules are attracted to the Ca2+ ions. The oxygen atoms in the water molecules are attracted to the H+ ions.

Question 4(Multiple Choice Worth 2 points) Which of these statements about water is true? Its atoms share electrons equally. It can dissolve all known substances. Its molecules are farther apart in the solid state than in the liquid state. It has a lower specific heat than nearly all known metals.

Answers

A scientist adds heat to each of the following substances. Which will probably absorb the most heat before its temperature changes significantly?

50 g of liquid water 


A scientist discovers a new substance. The molecules of the substance form hydrogen bonds with each other. When the molecules lose a lot of energy, the hydrogen bonds hold them relatively far apart. Based on this information, what can the scientist infer about the substance?

It expands when it freezes.╖



Which of these best explains why a paper clip can float on water?


Water molecules near the surface produce more buoyant force than water molecules within the liquid.


Which of these best explains why the hydrogen atoms in a water molecule are attracted to Cl− ions in sodium chloride (NaCl)?


The hydrogen atoms have partial positive charges.
It expands when it freeze
Other Questions
A stem-and-leaf display describes two-digit integers between 20 and 80. for one of the classes displayed, the row appears as 5|246. what numerical values are being described? In what way was Marxism different from the socialism advocated by Owens and Fourier? you invest 2,600 in an account that pays an interest rate of 8.5% compounded continuously. Calculate the balance of your account after 5 years The inflammatory response increases the temperature of a skin cell above its normal range. This prevents the cell from quickly performing certain enzyme-catalyzed reactions. Why would this occur? High temperatures denature the enzyme, slowing the reaction. High temperatures denature the substrate, slowing the reaction. High temperatures denature the enzyme, ending the reaction. High temperatures denature the substrate, ending the reaction. n what ways did the Federal government finally try to help stem the tide of the Great Depression? Which task will you most likely perform during the editing and proofreading stage? (A)correct any remaining errors (B)write the first draft of your paper (C)decide on a main topic for your paper (D)research supporting details Using the periodic table, how would you find elements with chemical properties similar to helium? Define a function f : R R by the formulaf(x) = 2x 8.Prove that f is one-to-one.Let a, b is in R, and suppose thatf(a) = f(b).Then2a 8 = Jefferson delays mentioning the American colonies until late in the introduction. how does this delay affect his argument Which expression is equal to 7(1+3)A.) 7+21B.) 7+3C.) 1+21D.) 7+4 The cost of painting a circular traffic sign is $3.50 per square foot. How much, to the nearest dollar, will it cost to paint the sign if its diameter measures 36 INCHES. You slam on the brakes of your car in a panic, and skid a certain distance on a straight, level road. if you had been traveling twice as fast, what distance would the car have skidded, under the same conditions? Writers who use imagery A. are using the senses to get audiences to visualize B. must describe either fire or water in great detail C. rarely become considered "great" writers over time D. usually do so because they do not like figurative language From his speech in Act III, scene ii of Julius Caesar, what can you infer about Mark Antony's feelings for Caesar?A.That he considered Caesar a friend B.That he is sorry he murdered Caesar C.That he was angry at Caesar's behavior D.That he is happy Caesar is finally dead In the early 1770s, many radical revolutionaries were committed to the slogan of no taxation without representation. in what ways was this a justification/excuse for war? and in what ways did it accurately reflect the challenges faced by the colonists? the formula I=square root w/r gives the electric current I amperes that flows through an appliance, where W is the power in watts and R is the resistance in ohms. which set of numbers best describes the value of I for the given values of W and R? ( 42.) W=100,R=25 ( 43.)W=100,R=50 Carbon dioxide is ________. the most abundant greenhouse gas the most potent (per molecule gas. of the greenhouse gases the only greenhouse gas presently decreasing in the atmosphere the main anthropogenic greenhouse gas produced in the united states the only greenhouse gas presently increasing in the atmosphere El seor hace dibujos (drawings) en la computadora para anuncios (advertisements) en espaol de compaas hispanas. l es: HELPPPPPP make sure your right !:) a person standing at the edge of a seaside cliff kicks a stone over the edge with a speed of 18 m/s. The cliff is 52 m above the water's surface. With what speed did it strike the water? Steam Workshop Downloader