Each railway car has a mass of 12,000 kg. Before the cars collide, the car on the left has a speed of 32 m/s. What is the magnitude of its momentum?

A 3kg book falls from a shelf. If it lands with a speed of 4.8 m/s, from what height did it fall? A. 28.8 m, B. 1.2 m, C. 0.6 m, D. 14.1 m

Heat has the same units as:

A disk of mass m and radius r is initially held at rest just above a larger disk of mass M and radius R that is rotating at angular speed ωi.

A car travelling at 15 m/s increases it's speed to 20 m/s in 10 seconds. its average acceleration is?

Metamorphic rocks are formed from: deposition cooling magma eroded land heat and pressure

Why will marchers at the end of a long parade following a band be out of step with marchers nearer the band

How would you explain photosynthesis to a new student in class

If the abosolute of a gas is 600 k, the temperature in degrees Celsius is

How does an electromagnetic wave propagate itself? a. A changing magnetic field induces an electric field perpendicular to the magnetic field. b. A changing electric field induces a magnetic field perpendicular to the electric field. c.

Which of the following is an example of convection? A. hot air rising and cooler air falling B. a hot object transferring heat to a cooler one C. a hot oven warming the air around it D. the rays of the Sun warming the earth