What affects the apparent brightness of a star

Which of the following is not a concern regarding waste

Suppose Car 1 collides with Car 2; Car 2 was not moving. In an ideal situation with no friction, according to the Law of Conservation of Momentum, what happens to the momentum within this system after the collision? A) It remains the same.

Jason has operated his own sheetrock installation business for many years. This means that jason is also qualified to put plumbing into the houses he works in. A) True B) False

Why can television satellite which broadcast information as electromagnetic radiation send signals from the vacuum space

Which factors affect friction between two solid surfaces?

How much work is done when a 4.0-newton box is carried horizontally a distance of 2.0 meters at a constant velocity?

You push a shopping cart filled with groceries (total mass = 20 kg) by applying a force to the cart 30° from the horizontal. If the force you apply has a magnitude of 86 N, what is the cart's acceleration? Assume negligible friction.

Does water expand more as the temperature drops even more below 0 deg? I am worried about the coolant in my rad. as the temp. is 40deg below.

A 1.00-kilogram ball is dropped from the top of a building. just before striking the ground, the ball's speed is 12.0 meters per second.

Why oil does not dissolve in water?