Regan has an empty glass cup. it has a mass of 0.3 kg. she drops the cup on the ground and it shatters into several pieces. if she collected all of the pieces of the cup, how much mass would all of the pieces have combined?

Answers

Answer 1

Answer: 0.3, because its the same thing, just in pieces.

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Energy of a wave is measured in terms of the wave's ?

Answers

Answer: amplitude

Explanation: amplitude is a important measurement, it tells us how much energy a wave is carrying

Energy refers to the speed.So u use the formula speed=wavelength×frequency

What does a reference point provide

Answers

to check progress and direction

What happens in energy transformations with the total amount of energy?

Answers

Answer:

Energy transformation is when energy changes from one form to another – like in a hydroelectric dam that transforms the kinetic energy of water into electrical energy. While energy can be transferred or transformed, the total amount of energy does not change – this is called energy conservation.

Explanation:

cause it is energy

Light is traveling through the different media shown. In which medium does light travel fastest?

Answers

Light travelling in a vacuum is the fastest thing in the universe. The speed would be 2.99x10^8 m/s. The answer to this question is 'vacuum', where light can travel the fastest. I hope this helps you. You're welcome!

Answer:

Aluminium or Iron or any metal really

Explanation:

I did Gradpoint :)

Help Please ! A fisherman casts his lure at an angle of 33 degrees above the horizontal. The lure reaches a maximum height of 2.3 m. Assuming no frictional forces, what was the initial velocity the fisherman gave the lure when he cast it? 12.34 m/s

28.45 m/s

34.91 m/s

21.29 m/s

Answers

The initial velocity is 12.34 m/s

Explanation:

The vertical component of the initial velocity determines the maximum height.

The formula to apply is : v²=u²+2as , where

v=y-component, final velocity = 0 m/s

u= y-component of the initial velocity = ?

s= distance traveled = 2.3 m

a=acceleration due to gravity = -9.81 m/s²

Using the values in the equation

v²=u²+2as

0²=u²+2×2.3×-9.81

0=u²-45.126

45.126=u²

√45.126= u

6.7175 m/s

The vertical component of velocity is given by;

velocity*sin(angle with horizontal)

velocity=6.7175 / sin 33°

=12.338 m/s

=12.34 m/s

Learn More

Finding Initial velocity :brainly.com/question/1858995

Keywords : angle, maximum height, initial velocity, friction

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An 84 kg skydiver is observed to be falling at an acceleration of 5 m/ second squared. What is the magnitude of the force of air resistance on the skydiver?Is the answer 1243.2 N

Answers

Answer:i dont know

Explanation:i dont know

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