Two drivers make a 100-km trip. 1 completes the trip in 2 hours. driver 2 takes 3 hours but stops for an hour halfway. which driver had a greater average

We know the mechanical energy Ina system is 30 J, and we know the potential energy is 20J. What is the kinetic energy?

What type of power plant is virtually pollution free

If you could throw an object high enough to reach space how hard would you have to throw it

What is an object's acceleration if it is moving at 30 m/s and comes to a stop in 5 s? - 30 m/s2 - 6 m/s2 30 m/s2 6 m/s2

What element are the cores of massive stars made of when a supernova occurs? a. silicon b. iron c. oxygen d. neon

Two main pieces of evidence support the big bang theory and the idea that our universe is continually expanding: Doppler shift and cosmic background radiation. Explain how these phenomena provide evidence of the expansion of the universe.

How was bohr atomic model similar to Rutherford's model

A rigid container filled with a gas is placed in ice. What will happen to the pressure of the gas? And what will happen to the volume?

A man is sitting on a 20 m height building and his mass is 50 kg. Calculate the mechanical energy.

Which of the following correctly describes which types of waves travel through which types of mediums? A) Transverse waves travel through solids, liquids, and gases.