A train travels 53 kilometers in 4 hours, and then 90 kilometers in 3 hours. What is the average speed

What direction is the net force on a falling skydiver before she reaches terminal velocity? no net force up o down

When you are running, there is friction between your feet and the ground and air resistance between your body and the air.

An object is moving in the absence of a net force. Which of the following best describes the object's motion? A. The object will slow down at a constant rate until coming to rest B.

Why does a charged balloon stick to a neutral wall?

A net force acts on a mass of 8.00 kg causing it to move from rest to a speed of 10.0 m/s in a time of 5.00 s. The bet force must have a magnitude of A. 8.00n B. 16.0n C. 40.0n D. 80.0n

How does increasing the amount of charge on an object affect the electric force it exerts on another charged object?

A diffraction grating is illuminated simultaneously with red light of wavelength 670 nm and light of an unknown wavelength. The fifth-order maximum of the unknown wavelength exactly overlaps the third-order maximum of the red light.

Four soccer players are running down the field at the same speed. Player 1 weighs 145 lbs and is running toward the north goal, player 2 weighs 175 lbs and is running toward the south goal, player 3 weighs 155 lbs and is running toward the south

Pure water has a hydrogen ion concentration of 1 x 10 (-7) M and a ph of 7. A student measures a basic solution and finds that it has a hydrogen ion (H+) concentration of 1 x 10 (-3).

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