Why isn't the level of water in aquifer always the same?

Star a has a parallax angle of 0.02 arcseconds, and star b has a parallax of angle of 0.1 arcseconds. which star is more distant and how much more distant is it?

In a bizarre but harmless accident, super man fell from the Eiffel Tower. How fast was superman traveling when he hit the ground 7.80 seconds after falling?

Compute your average velocity in the following two cases: (a) You walk 85.5 m at a speed of 1.41 m/s and then run 85.5 m at a speed of 4.15 m/s along a straight track. (b) You walk for 1.00 min at a speed of 1.41 m/s and then run for 1.32 min at 4.

Which of the following would increase the strength of an electromagnet? Check all that apply. A. Increasing the current flow B. Putting a piece of iron inside the loops of wire C. Increasing the number of loops of wire D. Spinning the loops E.

10) A bowling ball released from rest at the top of a 200. m building falls to the ground under the influ- ence of gravity. Calculate: a) its speed at 5.00 s b) how far it has gone when its speed is 32.0"

Why is the use of an international system of measurement important for science?

Would u do more lifting putting a box on the table or putting it on a shelf

Tia needs to produce a solenoid that has an inductance of 2.51 μ H. She constructs the solenoid by uniformly winding 1.19 m of thin wire around a tube. How long, in centimeters, should the tube be?

A 1,492.3-kg airplane travels down the runway. Each of its four engines provides a force of 1,447.5 N. Find the acceleration of the airplane, in m/s2. (Ignore friction.)

A 0.42 kg football is thrown with a velocity of 17 m/s to the right. A stationary receiver catches the ball and brings it to rest in 0.017 S. What is the force exerted on the receiver? Answer in units of N