A 45,000 kg train moves at a velocity of 12 m/s north. It collides with a 50,000 kg train moving 10 m/s south. If the collision is inelastic, what is the final motion of the trains?

When a quantity of monatomic ideal gas expands at a constant pressure of 4.00*104pa, the volume of the gas increases from 2.00*10-3m3 to 8.00*10-3m3?

A kite stuck in a tree has ___ energy. a. kinetic b. thermal c. chemical d. potential

If the mass of an object stays the same and you apply more force what will happen to the objects motion

Kelly's mother is taking her temperature to see if she has a fever. Which unit of measurement could be used to measure Kelly's body temperature? A. degrees Celsius B. meters C. grams D. kilograms

Which best describes why a liquid needs container when a solid does not

What is the weight of a 65 kg astronaut on mars?

When lava cools, what type of Rock forms?

A uniformly charged conducting sphere of 1.1 m diameter has a surface charge density of 6.2 µC/m2. (a) Find the net charge on the sphere. (b) What is the total electric flux leaving the surface of the sphere?

A blow-dryer and a vacuum cleaner each operate with a voltage of 120 V. The current rating of the blow-dryer is 12 A, while that of the vacuum cleaner is 5.7 A. Determine the power consumed by (a) the blow-dryer and (b) the vacuum cleaner.

4. A 40 kg child and a 30 kg child want to balance themselves on a 4 meter, 50 kilogramn see-saw. Where should the fulcrum be placed?