Question

Sprinters set in the starting blocks at the beginning of a race rely on what kind of energy conversion?

A. Chemical potential energy converting to kinetic energy
B. Kinetic energy converting to chemical potential energy
C. Gravitational potential energy converting to heat energy
D. Heat energy converting to kinetic energy

Answer 1

@Ms-Brains @confluxepic

Answer 2

i feel like none of them

Answer 3

I got no idea, but I'm leaning towards A. :( Sorry. xc

Answer 4

its okay

Answer 5

can u help with another one?

Answer 6

Earth's gravitational potential energy: GPE = mgh = Gravity (9.81m/s2) × Mass (kg) × Height (m)

Kinetic energy:

What factors does the gravitational potential energy of an object depend on?

A. Only the mass of the object
B. Mass and height of the object
C. Mass and speed of the object
D. Height and speed of the object

Answer 7

No clue on this, Chemistry is not my thing bud, I am majoring in Bio, and Earth sciences.

Answer 8

what about u @xo.A

Answer 9

I thinking B.

Answer 10

i was thinking the same thing

Answer 11

Earth's gravitational potential energy: GPE = mgh = Gravity (9.81m/s2) × Mass (kg) × Height (m)

Kinetic energy:

How do the mass and speed of an object affect the kinetic energy?

A. Mass has half the effect on kinetic energy that speed has.
B. Speed has a greater effect than mass on kinetic energy.
C. Mass and speed have the same effect on kinetic energy.
D. Mass has a greater effect than speed on kinetic energy.

Answer 12

b?

Answer 13

Im leaning towards C.

Answer 14

ayye i got a 80%. thanks <3

Answer 15

No problem (:

Answer 16

i wont bug u for anymore (: appreciate it

Answer 17

jk maybe i will cuz im stuck again

Answer 18

Which of the following describes the Bohr atomic model?

A. Protons, neutrons, and electrons orbit around each other in set paths.
B. The nucleus contains protons and neutrons and is orbited by electrons.
C. Protons, neutrons, and electrons occupy the same spaces within the atom.
D. Protons occupy the center of an atom, with neutrons and electrons circling.

Answer 19

Oh no, no worries lol
Im going with B. (: