During the flight of the ball, what is the direction of its Acceleration due to gravity

Two lamps one rated 40W at 220 V and the other 60W at 220 V are connected in parallel to the electric supply at 220V.

A 12v battery supplies a current 0f 0.4A to a lamp. Caculate resistance of the lamp

Changing the f-number of a camera lens by 4X will change the light intensity admitted to the film by what factor? A) 16 B) 0.0625 C) 2 D) 0.25 E) 4

which coordinates identify a location of a city that has the latitude of 38.0°N and a longitude of 25.0°W

How can magnet be used to produce an electric current

Ron bicycles forward with an acceleration of 2.1 m/s2. If he is applying a forward force of 195 N, what is his mass?

Diane swim 5 kilometers against the current in the same amout of time it took her to swim 15 kilometers with the current. The rate of the current was 2 kilometers per hour. How fast would diane swim if there were no current?

A man paddles a canoe in a long, straight section of a river. The canoe moves downstream with constant speed 5 m/s relative to the water. The river has a steady current of 1 m/s relative to the bank. The man's hat falls into the river.

In an atom, almost all of the mass is concentrated in a tiny nucleus because

A truck travels down the highway at a speed of 110 km/hr. How long does the trip last if the truck covered 2200km?