A 45.0-kg sample of ice is at 0.00°C. How much heat is needed to melt it? For water, Lf=334 kJ/kg and Lv=2257 kJ/kg

A. 4.10 x 10^6 kj

B. 0.00 kj

C. 1.02 x 10^5 kj

D. 1.50 x 10 ^4 kj

The speed of an object undergoing constant acceleration increases from 0 m/s to 23 m/s in 10 seconds. How far does the object travel during the 10 seconds

A roller coaster is going through a loop with a circular radius of 9.1 meters, how fast must the roller coaster be moving at the top of the loop in order to stay on the track?

Three particles A, B and C are thrown from the top of a tower with the same speed. A is thrown straight up, B is thrown straight down and C is thrown horizontally. They hit the ground with A. Equal speed at same time B.

What type of rays can pass through all matter?

Social networks have clear boundaries.

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.

List and describe two ways currents affect life on earth