A group of students is measuring the change in momentum of an object. Which set of lab equipment would be most useful in measuring the momentum of an object?

Answers

Answer 1

Answer:

Ruler/tape and stopwatch

Weighing balance

Explanation:

Since for momentum, we're concerned with mainly mass and velocity of an object then you will need weighing balance calibrated with the most accurate unit (normally grams or kilograms). The weighing balance will therefore be useful in measuring mass. To obtain velocity, you need to get distance that an object moves and divide it by time taken for the movement. Therefore, a tape or rule will be useful in measuring distance moved in meters while stopwatch will help you get time taken which consequently you use to get velocity.

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How do liquid water , ice and water vapor differnt from eachother

Answers

ice is a solid and then it has to turn into a liquid to eveaporat and liquid water just evaporates

a girl pulls a wagon by applying a force to it .what other force can you infer acts on the wagon in opposit direction

Answers

Friction I believe, because the friction from the ground would pull against the wagon.

Friction because it pushes the wagon and it comes from the ground

A 2.00x10^6 hertz radio signal is sent a distance of 7.30x10^10 meters from earth to a spaceship orbiting Mars. How much time does it take for the radio signal to travel from earth to the spaceship

Answers

Answer:

It takes $2.43* 10^2$ for the radio signal to travel from earth to the spaceship.

Explanation:

Given:

The frequency of the radio signal = $2.00 * 10^6$ hertz

Distance = $7.30* 10^10$ meters

To Find:

The time taken for the radio signal to travel from the earth to the spaceship= ?

Solution:

we know that the time taken can be found by dividing the distance travelled by the speed at which the signal travels

$Time = (Distance)/(Speed)$

Here the speed of the radio signal is equal the the speed of light

Now substituting the values,

Time taken is

=> $Time = (7.30* 10^10)/(3 * 10^8)$

=> $Time = 2.43* 10^(10-8)$

=> $Time = 2.43* 10^2$

The time taken for the 2×10⁶ Hz radio signal to get to the spaceship from Earth is 243.33 s

What is speed?

Speed is the distance travelled per unit. Mathematically, it can be expressed as:

Speed = distance / time

How to determine the time

Speed of radio signal = 3×10⁸ m/s
Distance = 7.3×10¹⁰ m
Time =?

speed = distance / time

3×10⁸ = 7.3×10¹⁰ / time

Cross multiply

3×10⁸ × time = 7.3×10¹⁰

Divide both sides by 3×10⁸

Time = 7.3×10¹⁰ / 3×10⁸

Time = 243.33 s

Learn more about speed:

brainly.com/question/680492

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When energy (heat) is added to matter the molecules (particles) move _______ and farther ______.

Answers

Answer:

energy

Explanation: transferred from the warmer object to the cooler one. The movement of thermal energy from a substance at a higher temperature to one at a lower temperature is called heat. When a substance is heated, it gains thermal energy. Therefore, its particles move faster and its temperature rises.

The answer is energy!!!!

Why did pangea break up ?

Answers

Because the gravitational pull from the ocean i believe

Pangea was fully assembled by the Early Permian Period, some 270 million years ago. It began to break apart about 200 million years ago, during the Early Jurassic Period, eventually forming the modern continents and the Atlantic and Indian Oceans.

In your own words, define the following terms. Radiation, Convection, and conduction.

Answers

Radiation: transferred energy
Convection: Transfer of heat
Conduction: transfer of electric charge

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