Why do we see the color black?

What do we now understand to be the primary difference between normal galaxies and active galaxies?

Original water slide tornado ride names I need this for science not things that exist already anyone have names for water slides that look like tornados?

A m = 500 kg sack of coal falls vertically onto a m = 2000 kg railroad flatcar which was initially moving horizontally at 3 m/s. no external forces, including friction, act on the flatcar.

Why do experiments remind you of science? explanation

A substance made up of 2 or more elements is called

A hot air balloon is rising straight up at a constant speed of 7 m/s. when the balloon is 12.0 m/s above the ground, a gun fires a pellet straight up from ground level with an initial speed of 30.0 m/s.

The atmosphere is an). O element O molecule O mixture O compound

What is the velocity of the car, in meters per second, just after it hits a 135-kg deer initially running at 10.5 m/s in the same direction? Assume the deer remains on the car.

True or false the metric unit used to describe weight as a measure of the force of gravity is called a newton

One car travels 40. meters due east in 5.0 seconds, and a second car travels 64 meters due west in 8.0 seconds. During their periods of travel, the cars definitely had the same