Ask question

Ask question

All categories

3 years ago

10

What happens to the potential energy of a book that is dropped from a desk to the floor?

1 answer:

Debora [2.8K]3 years ago

4 0

Answer:

D. It is converted into kinetic energy.

Explanation:

When a book is dropped from a desk to the floor, the potential energy of the book is converted to kinetic energy as it falls.

Potential energy of a body is the energy due to the position of the body.
At a particular height, the potential energy is maximum.
A body with mass and moving with velocity will have kinetic energy
As the book drops through the height, to conserve energy, the potential energy is converted to kinetic energy.

You might be interested in

Due to the hydrogen bonds between water molecules, when water freezes, it will… Select all that apply

sertanlavr [38]

<span>i think its decrease in density</span>

7 0

3 years ago

What is the name of the process in which the nucleus of an atom of one element is changed into the nucleus of an atom of a diffe

Fed [463]

(2) transmutation is your answer.

8 0

3 years ago

What gas is used in freezers and fridges?

natta225 [31]

Answer:

Chloro-Flouro-Carbon

Explanation:

Chloro-Flouro-Carbon (CFC Gas) is used as a refrigerant in fridges and freezers.

7 0

2 years ago

As with any drug, aspirin (acetylsalicylic acid) must remain in the bloodstream long enough to be effective. Assume that the rem

Olenka [21]

Answer:

180 mg

Explanation:

For a first-order reaction, we can calculate the amount of aspirine (A) at a certain time (t) using the following expression.

$A=A_{0}.e^{-k.t}$

where,

k: rate constant

A₀: initial amount

If we know the half-life ( $t_{1/2}$ ) we can calculate the rate constant.

$k=\frac{ln2}{t_{1/2}} =\frac{ln2}{3h} =0.2h^{-1}$

When t = 4 h and A₀ = 400 mg, A is:

$A=400mg.e^{-0.2h^{-1}\times 4h} =180mg$

4 0

2 years ago

Acid rain is a term that refers to a mixture of wet and dry deposited material from the atmosphere containing higher than normal

sattari [20]

Answer: Volcanic Eruptions

Explanation:

3 0

2 years ago