How can the same object be moving to one person, yet stationary to another person?

At what distance along the central perpendicular axis of a uniformly charged plastic disk of radius 0.390 m is the magnitude of the electric field equal to one-half the magnitude of the field at the center of the surface of the disk?

John is in need of a large amount of current in order to run his machine but he is not able to increase the current. What advice would you give to John to increase the current?

Two identical bullets are fired horizontally with the identical velocities. One bullet is fired from a "rifled" barrel which makes the bullet spin along the axis of travel. The other bullet is fired from a smooth-bore barrel which imparts no spin.

Which statement best describes Gay-Lassac's law

Who thinks there is a 9th planet (not counting Pluto) and tell me why

A satellite has a mass of 6124 kg and is in a circular orbit 4.64 * 105 m above the surface of a planet. the period of the orbit is 1.7 hours. the radius of the planet is 4.42 * 106 m.

A weightlifter Lifes a 100 kg barbell from the floor to a height of 2.00 m in 1.50 seconds. find the power he generates (use G=10 N/KG)

Use 3rd law to explain how a fish swims through water. Identify the force pairs and draw a diagram.

A sample of dna contains 1000 guanine bases how cytosine bases does it contain

What is the name of an ionic compound that consists of lithium ions (Lit) and iodide ions (I) ?