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serious [3.7K]
3 years ago
8

Which kind of energy transformation occurs during skydiving? A) mechanical to gravitational B) gravitational to kinetic C) kinet

ic to potential D) mechanical to potential
Physics
2 answers:
Aleks [24]3 years ago
7 0

B) gravitational to kinetic

Explanation:

The skydiver, when he is located at a certain height h above the ground, possesses gravitational potential energy, equal to:

U=mgh

where m is the mass of the skydiver, g is the gravitational acceleration and h is the height above the ground. As he falls, its height h decreases, while his speed v increases, so part of the gravitational potential energy is converted into kinetic energy, which is given by

K=\frac{1}{2}mv^2

so, we see that as v increases, the kinetic energy increases. Therefore the correct answer is

B) gravitational to kinetic

Roman55 [17]3 years ago
6 0

I believe the answer is B). Gravitational energy to kinetic.

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What part of that antonym determines if it will combine or break apart from another substance
emmasim [6.3K]
<h2>Answer</h2>

The <u>electron affinity in chemical reaction</u> decides the formation of breakdown of substance

<h2>Explanation</h2>

Within the chemical reactions, different reactants are come together to make the new compound to complete up to the reaction. The reaction is based on the stability of reactants and the electron affinity of these reactants. The oxidation and reduction process within the reaction is also the main reason to combine or break the substance. For example

H_2 + F_2 -------> 2HF

The hydron has the ability to lose electron and fluorine has the ability to gain an electron. The strong or weak electron affinity of this element makes the new compound HF.

3 0
3 years ago
Please help...........................
Marianna [84]
Hi!

Neutrons are neutral, which means they don't exactly have an electrical charge. It's because of this neutral charge that it is represented with a '0'. 

On the other hand, protons and electrons <em>do </em>have electrical charges. Electrons flow around the outside of the nucleus, with a negative charge.

Protons are stored in the nucleus with the neutrons, holding a positive charge.

Hopefully, this helps! =)
6 0
4 years ago
Read 2 more answers
Ryan applied a force of 10N and moved a book 30 cm in the direction of the force. How much was the workdone by Ryan?
Orlov [11]
  • Force=10N
  • Displacement=30cm=0.3m

\\ \sf\bull\longmapsto Wd=Force(Displacement)

\\ \sf\bull\longmapsto Work=10(0.3)

\\ \sf\bull\longmapsto Work=3J

5 0
3 years ago
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Is hot asphalt that is poured into the ground and cools a physical or chemical change?
Gala2k [10]
Physical change
Because it's changed by heat
5 0
4 years ago
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You are a detective investigating why someone was hit on the head by a falling flowerpot. One piece of evidence is a smartphone
umka21 [38]

Answer:

0.37 m

Explanation:

Given :

Window height, h_1 = 1.27 m

The flowerpot falls 0.84 m off the window height, i.e.

h_2 = (1.27 x 0.84 ) m in a time span of $t=\frac{8}{30}$   seconds.

Assuming that the speed of the pot just above the window is v then,

h_2=ut+\frac{1}{2}gt^2

$(1.27 \times 0.84) = v \times \left( \frac{8}{30} \right) + \frac{1}{2} \times 9.81 \times \left( \frac{8}{30} \right)^2$

$v=\left(\frac{30}{8}\right) \left[ (1.27 \times 0.84) - \left( \frac{1}{2} \times 9.81 \times \left( \frac{8}{30 \right)^2 \right) \right]}$

$v= 2.69$ m/s

Initially the pot was dropped from rest. So,  u = 0.

If it has fallen from a height of h above the window then,

$h = \frac{v^2}{2g}$

$h = \frac{(2.69)^2}{2 \times 9.81}$

h = 0.37 m

3 0
3 years ago
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