If 20 beats are produced within one second, which of the following frequencies could possibly be held by two sound waves traveling through a medium along a common path at the same time
A. 22 Hz and 42 Hz
B. 47 Hz and 55 Hz
C. 38 Hz and 63 Hz
D. 18 Hz and 26 Hz?

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.

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

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.

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Answer: The motion of the given particles towards right.

Explanation:

In the given problem, two protons are moving up when they enter a magnetic field that points towards you. The force exerts on a moving charge in a magnetic field. This force is Lorentz force.

Lorentz force will act on the two protons. Force will be perpendicular to the directions of the velocity and magnetic field. The force will be maximum when the magnetic field and the velocity of the charge are in perpendicular direction.

The expression for Lorentz force is as follows;

[tex]F=q(v\times B)[/tex]

Here, q is the charge, v is the velocity and B is the magnetic field.

The cross product gives the direction of the proton. It can be determined by the right hand rule. The right hand rule states that the thumb points in the direction of the motion of the charges, forefinger points in the direction of field and the middle finger points in the direction of the force.

Therefore, the protons move towards the right.

Answer:

the need to move quickly through dark environments

Explanation:

Dolphins and Bats are those  creature who uses echolocation in the path which is one property which give them edge in night because they can easily locate things which any other creature face difficult to locate.  

In echolocation what bat and dolphins do is the emit ultra sonic waves which gets deflected from the object and from the deflection they get to know the position of the objects.  

Answer:

D) 500 meter

Explanation:

As we know that SI unit to measure the distance is meter

so here the SI unit of the measurement of the distance must be in meter units

so it is given as

D) 500 meter

while other options are

A) 30 miles : this is also measurement of distance but it is not in SI unit

B) 16 kilogram : this is measurement of mass

c) 24 feet : this is also measurement of distance but not in SI units

 The piece of cheese melts when it’s placed on the hamburger because conduction occurs. The hamburger is warmer than the cheese, so thermal energy is transferred from the hamburger to the cheese, causing it to melt. 

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.

assuming this question:

Which device requires an electric power supply?

A. A turbine

B. A generator

C. A permanent magnet

D. A motor

The answer would be D. a motor

Explanation: a motor turns electrical energy into mechanical energy so it needs an electric power supply

Answer:26

Explanation:

Physics and chemistry are the two major branches of physical science. Both types of physical science are concerned with the investigation of matter.

In juxtaposition to life science, physical science is a branch of natural science that studies non-living systems.

It, in turn, has many branches, each referred to as a "physical science," which are referred to collectively as the "physical sciences."

Physical sciences are academic bodies of knowledge that seek to discover the underlying laws of nature, which are frequently written in mathematics.

It refers to a group of disciplines that includes astronomy, chemistry, materials science, and physics.

Aside from intellectual development, physical science fosters reasoning ability and logical reasoning in individuals.

Thus, physical science is divided into several categories, including physics, astronomy, and chemistry. Physical science can be applied in a variety of careers.

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Final answer:

Pearls, created by mollusks like oysters and clams, consist of calcium carbonate but they are not considered minerals. They are organic gemstones formed by the secretion of nacre around an irritant, which is an organic process distinct from the formation process of inorganic minerals.

Explanation:

The soft-tissue lining of oysters and clams, known as the mantle, has the capacity to create pearls. Pearls are formed when a foreign substance, typically a grain of sand, becomes trapped between the mantle and the shell. The mollusk secretes layers of calcium carbonate in the form of nacre, or mother of pearl, which coats the irritant and over time develops into a pearl.

Pearls are not considered minerals; they are organic gemstones created within a living organism. While pearls consist largely of calcium carbonate (CaCO3), which is a mineral component, their organic origin and formation process distinguishes them from true minerals that are inorganic and naturally occurring with a definite chemical composition and crystalline structure.

Calcium carbonate is the primary substance in both pearl and the shells of most mollusks. It's also worth recognizing the cultural and commercial significance of pearls in decoration and jewelry.

Answer:

the Doppler effect

Explanation:

The doppler effect is what we called the effect that happens when the wavelength or frequency of a sound changes because the observer is moving relatevily form the object, could be moving closer or moving further away, but the wavelenght and the frequency changes alongside with the movement.

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

Final answer:

The work done on the couch when moving it with a force of 88 N over a distance of 2.1 m is calculated using the formula work = force × distance, resulting in 184.8 J.

Explanation:

The question involves calculating work done, which in physics is defined as the product of the force applied to an object and the distance over which the force is applied, provided the force is applied in the direction of motion. For the couch being moved with a force of 88 N over a distance of 2.1 m, the work done can be calculated using the formula: work = force × distance. Therefore, the work done is (88 N) × (2.1 m) = 184.8 J. Thus, the correct answer to the question is A. 184.8 J.

A. To solve for part A, we use the formula of Young’s double slit equation:

x = λ L m / d

Where,

x = distance between adjacent dark lines or fringes = 12.5 cm = 0.125 m

λ = wavelength of light = 600 × 10^-9 m

L = distance from the two sources of light to the screen = 1.2 m

m = number of fringes = 10 (tenth) – 1 (first) = 9

d = separation of slits = unknown

Rearranging the equation in terms of d and plugging in the values:

d = λ L m / x

d = (600 × 10^-9 m) (1.2 m) (9) / 0.125 m

d = 5.184 × 10^-5 m

d = 51.84 μm

B. The formula for path difference is:

path difference = (2 m + 1) (λ / 2)
path difference = (2 * 9 + 1) (600 × 10^-9 m / 2)

This response uses a fun story to explain the functions of different parts of the brain to children, emphasizing their roles in daily activities.

The Brain Adventure

Once upon a time in Brain City, there were three special friends: Smarty the Cerebrum, Memory the Hippocampus, and Swift the Brainstem. Smarty helps us think and learn, Memory stores our favorite stories and experiences, while Swift keeps our heart beating and helps us run fast when we play soccer.

Our brain is like a superhero team, with each part playing a different role to keep us healthy and happy. So, next time you kick a soccer ball or learn a new dance move, remember to thank your brain friends for making it all possible!

Heating baking soda causes it to decompose and release carbon dioxide, especially in the presence of moisture and acids, facilitating the leavening process in baking. This reaction demonstrates the essential role of acid-base interactions in cooking, with the mixture of baking soda and vinegar acting as a common example by producing carbon dioxide and neutralizing the solution's pH.

When you heat up baking soda, which is chemically known as sodium bicarbonate (NaHCO3), it undergoes a decomposition reaction, especially when moistened. Upon heating, it releases carbon dioxide gas (CO2). This reaction is crucial in baking as it helps dough and batter to expand, creating a soft and airy texture in baked goods. The presence of an acid, such as vinegar (acetic acid), lemon juice, or even ingredients like honey or cocoa, can significantly increase the amount of carbon dioxide produced during heating.

During the baking process, as long as the environment is acidic, sodium bicarbonate reacts with the acids present to produce carbon dioxide, water, and a salt. This release of gas contributes to the leavening (rising) of the dough. It's interesting to note that the reaction starts at a temperature as low as 60°C (140°F) and is generally complete at around 75°C (167°F). This behavior underscores the importance of promptly baking doughs and batters after mixing to maximize the leavening effect before the gas escapes.

Furthermore, the mixing of vinegar and baking soda is a classic example of this reaction, which not only visibly demonstrates the production of carbon dioxide through bubbling but also results in the solution turning more neutral. Initially, the mixture has an acidic pH due to the vinegar, but as baking soda neutralizes the acid, the pH increases, becoming more alkaline. This neutralization reaction is a cornerstone of many baking processes, showcasing the critical role of acid-base reactions in culinary science.

Answer: If you are referring to this question.

Which of the following affects the amount of total cholesterol in your body?

heredity

diet

regular exercise

all of the above

Explanation:

The answer should be the answer choice (all of the above) !

hope this helps!!!! :D

If the force of gravity between a book of mass 0.50 kg and a calculator of 0.100 kg is 1.5 × 10⁻¹⁰ N. The book and the calculator are approximately 0.1493 meters (or 14.93 centimeters) apart.

To find the distance (r) between the book and the calculator, we can use the formula for the force of gravity between two masses:

F = (G × m₁ × m₂) / r²

Now, rearrange the formula to solve for r:

r² = (G × m₁ × m₂) / F

r² = (6.674 × 10⁻¹¹ × 0.50 × 0.100 ) / (1.5 × 10⁻¹⁰ N)

r² = (3.337 × 10⁻¹²) / (1.5 × 10⁻¹⁰)

r² = 0.02225 m²

Now, take the square root of both sides to find the distance (r):

r = √0.02225 m²

r = 0.1493 meters

So, the book and the calculator are approximately 0.1493 meters (or 14.93 centimeters) apart.

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To convert 11 parts per million (ppm) into a percent, multiply 11 by 0.0001% to get 0.0011%.

To convert 11 parts per million (ppm) into a percent, you need to understand that one ppm is equivalent to 0.0001%. Knowing this, the conversion can be done by multiplying the number of parts per million by 0.0001%.

Step 1: Write down the value in ppm which is 11 ppm.

Step 2: Multiply the ppm value by 0.0001% to convert it to a percent.

11 ppm times 0.0001% = 0.0011%

Therefore, 11 ppm is equal to 0.0011 percent.

Final answer:

In the Many-Worlds Interpretation of quantum mechanics, all possible outcomes of quantum events occur in their own separate universes, leading to the existence of parallel universes. Therefore, a person does not do the exact same thing in all different dimensions, and a person is not 100% identical across these parallel universes. Differences arise from the unique outcomes of quantum events in each universe.

Explanation:

The concept of multiverses and parallel universes is a fascinating and complex topic in the field of theoretical physics, particularly under the Many-Worlds Interpretation (MWI) of quantum mechanics. This interpretation suggests that all possible outcomes of quantum measurements do indeed happen, but each outcome occurs in its own separate universe, or "parallel universe." According to this theory, with every quantum event, the universe 'splits' into a set of parallel universes, each representing a different possible outcome of that event, leading to a nearly infinite number of parallel universes.

Therefore, in some of these universes, a version of 'you' could indeed be doing something completely different than what you're doing right now, and with potentially slight or significantly different personal attributes or life circumstances.

In the context of whether a person is 100% identical across different dimensions, the answer is generally no. Given the practically infinite number of diverging paths at each quantum event, it is highly unlikely that there would be a universe where your counterpart is exactly the same as you in every possible way.

Small differences can arise from different outcomes of events, leading to potentially significant divergences over time. Thus, in another parallel universe, versions of individuals might share some core characteristics or memories but differ in various aspects due to the unique sequence of events they have experienced in their respective universes.

To find work we need to know force and distance; to find power we need to know force and velocity.

i hope this helps :))