Need asap !
which of the following is an example of work being done on an object?
a.
a man pushes a couch across the room.
b.
a prism scatters ultraviolet light into visible light.
c.
a box rests on the floor.
d.
water in a pot changes into steam.

in the diagram above, which letter identifies an axle?
a.
x
b.
z
c.
y
d.
w

which simple machine can be described as a shaft that is attached to the center of a wheel?
a.
lever
b.
inclined plane
c.
pulley
d.
wheel and axle

usually, levers are used to reduce the input force needed to move an object. this is only possible when the input force acts over a long distance and the object moves a shorter distance.

however, sometimes levers are designed to increase the input force needed to move an object. which of the following is most likely an example of this type of lever?
a.
a catapult
b.
a see-saw
c.
a wheelbarrow
d.
a crowbar

Iwill give brainliest if you answer right : )

Brutus, the dog, is pulling a bone to the left with a force of 20 n. lassie, another dog, is pulling a bone to the right with a force of 18n. what is the net force? a. b. c.

When temperature of a substance increases, of its particles increase resulting in more between particles. real world applications of thermal expansion absolute zero (-273 degrees c) is the lowest possible temperature on the kelvin scale. it is a measure of where a substance has no kinetic energy. heat is a process of the . energy flows spontaneously from a object to a until equilibrium is reached. heat is measured in heat is transferred throughis a method of heat transfer that occurs between particles of matter that are in direct contact with each other. are poor conductors that impede / reduce the rate of heat transfer. is a method of heat transfer that occurs in fluids (non-solids) by means of currents. real world application of convectiona method of heat transfer through electromagnetic waves. when energy moves from one object to another inside a closed system, no energy is or in the system in the transaction. systems will spontaneously move to a state of organized energy or high disorder over time called