A sled is at rest at the top of a 2 m high slope. The sled has a mass of 45 kg. The sled's potential energy is J. (Formula: PE = mgh)

Mathew is simulating forces on a simple machine. He runs four tests as shown. Which test illustrates a balanced net force?

Which is the correct order for these steps in cell signaling? A. signal transduction, receptor activation, response response, B. signal transduction, termination receptor activation, C. response, signal transduction receptor D.

What can happen to solar radiation when it enters atmosphere

A bullet travels at 850 m/s. How long will it take a bullet to go 1 km?

Which of the following provides evidence that geologic activity occurred in the past on Earth's Moon? a) the revolution of the Moon around the Earth b) the axial tilt of the Moon c) the phases of the Moon d) the presence of solidified lava flows on

A baseball has mass 0.145 kg. (a) If the velocity of a pitched ball has a magnitude of and the batted ball's velocity is in the opposite direction, find the magnitude of the change in momentum of the ball and of the impulse applied to it by the bat.

A long distance runner has an average speed of 4m/s during a race. How far does the runner travel in 20 minutes?

Density is calculated by dividing

The one island species evolved into three different species. This is called?

Find the components of vector M shown in figure 5-7