If you want to lift a 5-kg box to a height of 2 meters, how much work must be

done?

O A. 2J

O B. 50 J

O C. 98 J

O D. 100

How does the water table change around a pumping water well?

Is it possible for an object's instantaneous velocity and instantaneous acceleration to be of opposite sign at some instant of time?

What do you mean by zero, positive and negative acceleration

The substances in the table are combined, and Substance 1 loses 40 calories of heat. How many calories of heat will Substance 2 eventually gain? A) 0 B) 20 C) 40 D) 80

A circular loop of wire of cross-sectional area 0.12 m2 consists of 200 turns, each carrying 0.50 A. It is placed in a magnetic field of 0.050 T oriented at 30° to the plane of the loop. What torque acts on the loop?

What is the device to break a circuit called?

A 3 column table with 5 rows labeled table A. The first column is labeled voltage in volts with entries 1.0, 5.0, 10, 20, 50. The second column is labeled current: calculated in amps with no entries.

When you stack three flashlight batteries in the same direction, you get a voltage of 3*1.5 volts = 4.5 volts. What voltage do you get if one of the batteries is turned to face in the opposite direction? a) 0 volts b) 1.5 volts c) 3 volts d) - 4.

If an ant were scaled up to the size of an elephant, the ant would be

A 4.0 kg food pack was dropped from a height of 200 m by a helicopter during flood relief operations. At what velocity will the food pack be falling halfway to the ground?