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

Why do hydrogen and oxygen bond together to make water?

If you stop your bike very fast and fly over the handlebars which of newton's 3 laws would that be

A long straight cylindrical shell has an inner radius R_i and an outer radius R_0. It carries a current i, uniformly distributed over its cross section. A wire is parallel to the cylinder axis, in the hollow region (r R_0).

Measurements show that the wavelength of a sound wave in a certain material is 18.0 cm. The frequency of the wave is 1900 Hz. What is the speed of the sound wave?

What is the economic term used for sustained increase in the price of goods and services?

In a clear, coherent, paragraph-length answer, explain why the speed of the apple half way between the release and the maximum height is not half the initial speed.

In pea plants Round (R) is a dominant trait and wrinkled nose (r) is a recessive trait. Which combination would result in wrinkled seeds? 1. RR 2. Rr 3. rr 4. ww

According to the article, data from scientific observations fulfill what three functions

What are the three ways that an object can accelerate

What do you notice about earths axis during the winter solstice