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

Marine magnetic anomalies result from seafloor spreading in conjunction with

What makes up protrons, nutrons and electrons and stars with a q?

Which type of drug would be useful in dilating the pupils for an examination of the retina? Which type of drug would be useful in dilating the pupils for an examination of the retina?

In a crash or collision, why is it advantageous for an occupant to extend the time during which the collision is taking place?

An astronaut throws a rock. the rock travels through outer space at a constant velocity. which statement applies to the motion of this rock? A - an unbalanced force is acting on the rock, causing it to accelerate.

What is the most advanced life form on earth

Which EM wave is about the size of humans?

Describe how the Catapult works?

Newton's third law of motion states that the force pair acting on different objects consist of two forces that

While working on her science fair project Venus connected a battery to a circuit that contained a light bulb. Venus decided to change the light bulb to a higher resistance, but she wanted to keep the current the same.