The sky, which was bright blue, is now dark. you look up expecting to see a halo of light in the sky. what just occurred?

(A. an aurora

(B. a solar eclipse

(C. a solar black out

(D. a lunar eclipse

Whats a observation?

A space probe is traveling in outer space with a momentum that has a magnitude of 3.87 x 107 kg·m/s. A retrorocket is fired to slow down the probe. It applies a force to the probe that has a magnitude of 1.

If a child is on a bus and the ride is smooth they might not realize that they are moving unless they look out of a window. A. True B. False

3. What are two ways that atoms are involved with electric current? What is electric current? 2. Define a circuit and describe 3 major parts of a circuit.

What is a responding variable in science?

A rock climber is 200m above ground and has a GPE of 117,600 J. What is the rock climber's mass

If the photon scatters in the backward direction, what is the magnitude of the linear momentum of the electron just after the collision with the photon

A car speeds up from 15 m/s to 30 m/s in 12 seconds. What is the acceleration of the car?

These examples include learned and innate behavioral adaptations of animals. Which statement describes a learned behavioral adaptation of an animal? A. Your knee j e r k s when it is hit by a doctor. B. A dog shakes water from its fur. C.

Vitellium (Vi) has the following composition:Vi-188: 187.9122 amu; 10.861%Vi-191: 190.9047 amu; 12.428%Vi-193: 192.8938 amu; 76.711%Based on this data, what can you predict about the average atomic mass of vitellium?