A device has power - 2 D. The device is

a. A convex lens of focal length 50 cm

b. A concave lens of focal length 50 cm

c. A convex lens of focal length 2 m

d. A concave lens of focal length 2 m

To get to your baseball game, you had to drive 2 kilometers north, then 5 kilometers west, and finally 2 kilometers south. What is your car's displacement? A) 5 km, B) 5 km east, C) 5 km west, D) 9 km

Which is a reasonable and healthy substitute for using drugs alcohol or tobacco

Which statement best describes what happens when a sound source is moving? As the sound source approaches the observer, the pitch decreases and continues to do so as it passes the observer.

What is the value of x in the expression: x = p (p+q) + 4 if p = - 2 and q = 7

Angie is moving a couch with a mass of 48 kg. she moves it in 120 seconds using 240 j of work. what is her power output

given that a car's distance from a stop sign t seconds since it started moving is represented by d=t2-2t determine the car's average speed over each interval of elapsed time

A ball hits a wall. What is true about the magnitude of the force experienced by the ball compared with the force experienced by the wall? OA. The ball experiences more force than the wall. OB. The ball experiences less force than the wall.

A swimmer jumps from a waterfall thats is 8.5 m high from the lake below. How fast must he run horizontally to dive 2.5m away from the base of the waterfall?

What happens (as far as energy goes) when a molecule of gas strikes the wall of a container?

The boom of a fire truck raises a fireman (and his equipment - total weight 280 lbf) 60 ft into the air to fight a building fire.