You serve a volleyball with a mass of 2100 g. The ball leaves your hand with a velocity of 30 m/s. The ball has how much energy? Calculate it.

Answers

Answer 1

Answer:

945 J

Explanation

You have just given the ball kinetic energy, which is given by the following equation:

Ek=0.5xm×v2

So the energy the ball has the moment after you hit it is:

Ek=0.5×2.1×(30)2<— square

Ek=945J

Related Questions

Do atoms and molecules have great mass and weight at the nanoscale or do they have no mass or weight.

Answers

Explanation:

Photons are one of the very few parti kes that don't have mass. Other subatomic particles and atoms are usually always massive

Answer:

Nanoscale objects are subject to different kinds of forces than larger objects

Explanation:

I'm sorry this is all I can give you...

What characteristics distinguish the inner planets in the solar system from the outer planets?

Answers

The four inner plants have shorter orbits slower spin ,no rings ,and they are made up of rock and metalThe outer plants are made up of hydrogen and helium, so they are called gas giants

Explanation:

hope it is the right answer

shorter orbits, slower spin, no rings, and they are made of rock and metal.

uh... can you help me with this all? or you can only the one you know.

Answers

Wate vapour came in contact of ice so they lost their heat so condensed around

Option C

Same C

Metals have very high boiling point as you can observe copper and Iron has very huge boiling point (2K+)

Option C again

As we can see the graph the line of sodium chloride boundary is almost a straight line and increasing with respect to temperature

According to law of conservation of matter ,matter can neither be created nor be destroyed rather they get rearranged

Option A

Option B

Sugar has C,H and O whereas Butane have only C and H

c,c,c,a,b are the answers

Your science teacher has provided the following materials to investigate the factors that affect the strength of electric and magnetic forces.

• large iron nail – 5 mm diameter

• 100 cm of thinly wrapped copper wire

• D battery

• electrical tape

• wire strip

• thumb tacks -assorted sizes

• paperclips – assorted sizes

Design an investigation you could carry out to determine the factors that affect the strength of electrical and magnetic forces.

Answers

The strength of the electric field can be estimated as force per electric charge, whereas the strength of a magnetic field depends on the force of electrons and velocity.

Whta is a magnetic field?

A magnetic field can be defined as magnetic work exerted on electric charges that are in motion (movement).

Conversely, an electric field is an area where an electric current is applied and electron force can be estimated per Volts per Meter.

In conclusion, the strength of the electric field can be estimated as force per electric charge, whereas the strength of a magnetic field depends on the force of electrons and velocity.

Learn more about magnetic fields here:

https://brainly.com/question/14411049

#SPJ1

What tools are needed for a simple experiment at home to show the relationship between string length and frequency of sound waves

Answers

Answer: Guitar strings

What is a source of the pressure used to create metamorphic rocks?

The water in the ocean
The air in the atmosphere
The layers of sediment in the ocean
The magma from deep in the ground

Answers

The answer is D, or The magma from deep in the ground.

Explanation:

A wouldn’t make sense because the water in the ocean is only hot if it is the deep end of the ocean. B is incorrect because metamorphic rocks are intrusive, as far as how they form. C is incorrect because the only kind of rock classification with layers is a sedimentary rock. D is correct because as the rock sinks into the mantle, magma heats it up intensely and pressures it.

The magma from deep in the ground. Im pretty sure sorry if I’m wrong.

How much time is required for sedimentary rocks to form?

A year
A couple years
A hundred years
A thousand years

Answers

The least amount of time required is D, or A thousand years.

Explanation: Rocks generally are non-renewable. With this being said, it takes at least a thousand years for a sedimentary rock to finish its compaction and cementation to form an actual rock.

Answer:

a couple of years

Explanation:

due to research the answer is millions of years just so you know

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