A person sitting on the outer edge of a merry-go-round travels ____________

Which of the following statements is true?

xenn [34]

Correct answer choice is :

C) The freezing and melting temperatures of a substance are the same.

Explanation:

Fluids have a particular temperature at which they convert into solids, identified as their freezing point. In theory, the melting point of a solid should be the same as the freezing point of the liquid. In practice, small variations among these measures can be seen. The freezing point of a matter is the same as that substance's melting point. At this distinct temperature, the substance can exist as either a solid or a liquid. At temperatures below the freezing/ melting point, the substance is a solid.

4 0

3 years ago

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A sudden discharge of static electricity during a thunderstorm is called

Tpy6a [65]

Hello
It is called lightning. Lightning in a storm occurs when there are two regions (it can be cloud-cloud or cloud-ground), one with a strong excess of positive charges and the other one with a strong excess of negative charges. The two types of charge attract each other, and then a sudden flow of charges from one region to the other occurs, which is called lightning.

3 0

3 years ago

1. in which of the following cases is the wavelength of the emitted radiation greatest? electron jumps from third orbit to secon

Yuki888 [10]

The more energy orbits the radiation jumps the more energy it has. So if the frequency stays the same each time then the wavelength will get longer if there is more energy.

In this case the situation in which the radiation jumps the most energy orbits is when: the electron jumps from the fourth orbit to the first orbit. This will emit the longest wavelength

7 0

3 years ago

A ball is dropped out of a window and hits the ground at 14.5 m/s. How long did it take to fall to the ground?

Lerok [7]

Answer:

Explanation:

Use the one-dimensional equation:

$v_f=v_0+at$ which says that the final velocity of a falling object is equal to its initial velocity times the acceleration of gravity times the time it takes to fall. We have the final velocity, -14.5 (negative because its direction is down and down is negative), initial velocity is 0 (because it was held still by someone before it was dropped), and acceleration is -9.8 (negative again, because direction is down while acceleration increases). Filling in:

-14.5 = 0 - 9.8t and

-14.5 = -9.8t so

t = 1.5 seconds

3 0

3 years ago

A student sets up an experiment to determine the inertial mass of a cart. The student has access to the following measurement eq

wlad13 [49]

Answer:

The correct answers are a and d

Explanation:

In this experiment it can be analyzed using Newton's second law

F = m a

m = F / m

The outside is supplied by the spring balance and is constant, therefore the acceleration of the system is also constant.

The acceleration can be found with the kinematic equations

x = v t + ½ a t²

As we start from rest the initial speed is zero

a = 2 x / t²

Therefore we need the reading of position and time.

Finally, the relationship between the balance reading and this acceleration of the mass of the system

Let's analyze the answers

a) True. It is one of the necessary quantities

b) False. With the equipment we cannot measure the speed directly

c) false. Acceleration is calculated

d) true. It is the other magnitude necessary for the calculation.

The correct answers are a and d

7 0

3 years ago

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A person sitting on the outer edge of a merry-go-round travels _____________ a person sitting near the center.