1. What is all matter made of?

bonds

cells

electrons

atoms

When ice melts, it changes from solid to liquid. Explain why this is not a chemical change. A) Because water can also boil. B) Because water is a compound and not a chemical. C) Because it does not matter how much ice you use.

Two objects of masses 100g and 200g are moving along the same line and direction with velocities of 2 m/s and 1 m/s respectively. They collide and after the collision, the first object moves at a velocity of 0.5 m/s.

What is a depletion layer

Ionic compounds are named using numerical prefixes. true or false

What emotional state is important to maintain while reporting an accident in the lab? fear anxiety calmness embarrassment

While playing with her 5 year old cousin, a Physics 135 student pushed him forward on his scooter. She pushes with a force of 50 Newtons for 3.5 seconds. If the boy and the scooter together have a mass of 30 kg, what is their final velocity? a. 2.

3. A 120.0 V generator supplies 3.0 kw of power. How much current ca the generator deliver?

An apple drops from a tree and hits the ground in 1.5s what is its speed just before it hits the ground?

Sound travels slow in cold air. Why does the speed of sound depend on air temperature?

A tow truck pulls a 500 kg car so that the car accelerates 2 m/s2. What is the net force on the car? 250 N 498 N 1000 N 502 N