A flattened combination of matter containing stars, gas, and dust in spiral galaxy can be identified as

1 galaxy

2 disk

3 elliptical galaxy

4 gravitation

An ant crawling on a sphere is which type of motion - 1d 2d or 3d

Why does earth orbit the sun rather than any other body in the solar system? a) the mutual repulsions among all the planets hold earth in its orbit. b) the earth is closer to the sun than other bodies in the solar system.

What is the primary technique for determining the absolute age of a rock

A wave has a wavelength of 10mm and a frequency of 5 hz what is the speed?

Which of the following terms best describes a conceptual scheme in science that is strongly supported, has not yet been found incorrect, and is based on the results of many observations?

The portion of a light ray that falls on a surface is a/an

Give the definition for diffusion. (A) gas molecules mix unequally average distance between collisions (B) gas molecules escape from a container into a vacuum through a small hole (C) gas molecules mix equally (D) gas molecules spread out in a

As resistance goes up, what happens to the current?

1. A 0.828-nm photon collides with a stationary electron. After the collision, the electron moves forward and the photon recoils backwards. a) Find the momentum of the electron. b) Find the kinetic energy of the electron.

When are you most aware of your motion in a moving vehicle: when it is moving steadily in a straight line or when it is accelerating?