Scientist suggest that galaxies are moving away from Earth due to

A. Dark energy

B. Doppler shift

C. Energy

D. Solar energy

Describe the climate, landforms, and existing plant and animal life during the cretaceous period

Haley was jumping on the trampoline at her house. As her socks rubbed against the trampoline, they became charged. If a small piece of lint with a charge of + 4.55 E - 21 C is attracted to the socks by a force of 1.

Suppose that 0.50 g of water at 25 ∘c condenses on the surface of a 51-g block of aluminum that is initially at 25 ∘c.

Your car and the trailer it is towing are initially at rest. you apply an acceleration of 1.75 m/s2 to get the vehicles moving. the mass of your car is 1200 kg and the mass of the trailer is 540 kg. (a) determine the net force acting on the car.

You've made the hypothesis that the stepper the slope, the faster a ball will be rolling when it reaches the bottom.

The puzzle box is traditionally associated with the work of

A 0.95-kg sample of water at 11°C is in a calorimeter. You drop a piece of steel with a mass of 0.39 kg at 212°C into it.

Let the magnitudes of two displacement vectors be 4 m and 8 m, respectively. If the two vectors are added, the magnitude of the resultant vector. A. is exactly equal to 4 m. B. is exactly equal to 12 m. C. is greater than 12 m. D.

justin pushes basket of toys with 50N of force for 3 meters in 100 seconds. how much work did he do on the basket

In general, what can be said about metals.