A ball is thrown with an initial speed of 20m/s at an angle of 60 to the ground. If air resistance is negligible, what is the ball 's speed at the instant it reaches its maximum height from the ground.

Which of the gas giants has the largest diameter Physical science unit 5 lesson 4

Consider the moon rocks that the crew of Apollo 11 brought back from Mare Tranquillitatis. Within the zircon crystals within these rocks, we find approximately 15 atoms of 207Pb for every atom of 235U. How old is Mare Tranquillitatis?

A 50 kg student climbs 3 m to the top of a set of stairs. Calculate the change in the student's gravitational potential energy from the bottom to the top of the stairs. Show your calculations and include units in your answer.

Calculate the rate constant for the first-order decay of 24na (t1/2 = 14.7 h).

Q: imagine you're in a room filling with water. there are no windows and no doors. how do you get out?

Which interaction of nature is weakest? a. strong c. electromagnetic b. weak d. gravitational

Two workers pull horizontally on a heavy box but one pulls twice as hard as the other. The larger pull is directed at 25.0 west of north and the resultant of these pulls is 430.0N directly northward.

What would happen to an object in orbit without gravity pulling down?

The waters of a lake will be most layered in which season A. winter B. spring C. summer D. fall

Which of the following is an example of an archery contestant showing good precision but poor accuracy? O A. Hitting a bulls-eye once and then missing a second time O B. Hitting a bulls-eye every time O C.