A 0.5kg bird has a PE of 137.2 J. What height is its perch?

How many planets are in the sky

which of the following food chains shows one way that energy moves through an ocean ecosystem? a.) fish > plankton > whale > squid b.) squid > whale > fish > plankton c.) plankton > squid > fish > whale d.) whale > fish > plankton > squid

pretend that is not friction at all between a pair of ice rink. If a hockey player using this special pair of ice skates was gliding along on the ice at constant speed and direction, what would be required for him to stop?

What statement did Niels Bohr make about atoms?

A firecracker shoots up from a hill 160 feet high with an initial speed of 90 feet per second. Using the formula H (t) = - 16t2 + vt + s, approximately how long will it take the firecracker to hit the ground? ... ?

2. With regard to the pH scale, a solution with a pH A. higher than 7 is considered an acid. B. lower than 7 is considered basic. C. of 6 is considered neutral. D. close to 14 is considered a strong base.

If a car rolls gently off a vertical cliff, how long does it take to reach 90km/hr.

In the game of volleyball, what skill relates to Newton's second law

The minimum breaking distance d in feet for a typical vehicle can be modeled with the equation d (v) = 0.045v2, where v is the vehicle's speed in miles per hour.

A 2kg blob of putty moving at 4 m/s slams into a 6kg blob of putty at rest what is the speed of the to stick together blobs immediately after colliding