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

Taking the direction west to be positive, and east to be negative, what is the average acceleration of a jet ski that goes from rest to 10 m/s west in 4 seconds? A. 2.5 m/s2 B. 0.4 m/s2 C. - 0.4 m/s2 D. - 2.5 m/s2

All life that we know of is based on carbon. Carbon's ability to form many chemical bonds is an important characteristic that allows it to form the basis of life.

Displacement vectors of 4 km north, 2 km south, 5 km north, and 5 km south combine total displacement of A) 16 km north B) 2 km north C) 16 km south D) 2 km south

A train travels 600 kilometers in 1 hour. What is the train's velocity in meters/second?

Dados los vectores a ⃗=6m y b ⃗=8m encontrar su resultante cuando Forman ángulo recto de 90° Son paralelos de igual sentido Son paralelos de sentido contrario

How can the speed of a mechanical wave energy be calculated

A hollow sphere of negligible mass and radius R is completely filled with a liquid so that its density is rho. You now enlarge the sphere so its radius is 2R and completely fill it with the same liquid. What is the density of the enlarged sphere?

Assume that you stay on the Earth's surface. What is the ratio of the sun's gravitational force on you to the earth's gravitational force on you? Express your answer using two significant figures.

The following three hot samples have the same temperature. The same amount of heat is removed from each sample. Which one experiences the smallest drop in temperature, and which one experiences the largest drop?

How does uniform linear motion differ from uniform circular motion?