What does a = (vf-vi) / t mean in science

What is a type of pulley that increases the size and effort of force

Why does an electrically heated mirror stay clear when a person has a shower?

A woman stands on a scale in a moving elevator. Her massis 60.0 kg and the combined mass of the elevator and scale is anadditional 815 kg. Starting from rest, the elevatoraccelerates upward.

Under what conditions would a rope remain in equilibrium during a tug of war? A) When there is no force acting on the rope. B) When the net force acting on the rope is zero. C) When the forces acing on the rope are unbalanced.

When the wood block is dropped in the water and settles so that it floats and is no longer bobbing up and down, how do the buoyant force and gravity compare?

Which of the following statements about how sound waves travel is correct? A Sound waves travel faster through solids than through liquids. B Sound waves travel faster through gases than through solids.

The idea that life could spring from nonliving matter is called? a. development. b. homostasis. c. spontaneous generation. d. evolution. 20 PTS

Physics how to calculate disintegration energy

Fast flowing water wears down the surface of a rock. This is an example of mechanical weathering chemical weathering erosion molecular weathering

What current would it need to carry in order to experience a very modest 1.0*10-3n⋅m torque?