A train travels 140 km in 2 hours and 30 minutes. What is its average speed?

When you look ahead while driving, it is best to: a. look beyond the car ahead of you b. look only at the back of the car ahead of you c. focus on the right side of your lane?

Differentiate between gravity and gravitation

The frequency of a wave is 20 Hz. If the speed of the wave is 4 m/s, what is the wavelength?

What is the change in momentum of a 0.18 kg arrow that is traveling at 100 m/s and is stopped by a hay bale in 2 seconds?

If sounds produced by the human vocal cords are approximated as waves on a string fixed at both ends, and the average length of a vocal cord is 15 mm, what is the fundamental frequency of the sound?

Who wrote the mayflower compact?

In the formula for specific heat, which quantity is measured in units of J/g•°C? a - c b - Q c - T d - m

The acceleration of an object is proportional to which of the following? the mass the energy of the object the inverse of the mass the inverse of the force applied

Suppose you squeeze a sponge into a small ball. does the mass of the sponge change? Does it's density change?

A solid round bar with diameter of 2-in has a groove cut to a diameter of 1.8-in, with a groove radius of 0.1-in. the bar is not rotating.