Which of the following universal forces is the most effective over long distances?

A. Electric

B. Gravitational

C. Magnetic

D. Strong nuclear

If a superior planet is observed from Earth to have a synodic period of 1.2 years, what is its sidereal period?

An electron enters a region of space containing a uniform 2.71 * 10 - 5 2.71*10-5 T magnetic field. Its speed is 197 197 m/s and it enters perpendicularly to the field. Under these conditions, the electron undergoes circular motion.

How do black holes loose energy when they orbit each other in binary?

Now try some more complex combinations. With 15kg at the 1.5m radius, balance with a 10kg and 5kg mass on the other side. Notice that the 10kg and 5kg masses cannot be positioned at the same radius. Balance the 20kg mass at 1.

The weight w (in pounds) of an object varies inversely with the square of the distance d (in miles) of the object from the center of Earth. At sea level (3978 miles from the center of Earth), an astronaut weighs 210 pounds.

Determine the maximum weight of the bucket that the wire system can support so that no single wire develops a tension exceeding 100 lb.

two objects each weighing 2kg are lifted through the same distance in 4s and 1s respectively. which scenario requires more work?

NaCI is__ an acid a base a salt

A rocky space object of varying size

Three balls are kicked from the ground level at some angles above horizontal with different initial speeds. All three balls reached in their paths the samemaximum height.