The earth takes 1 year to revolve around the sun at 1 a. u. distance (an astronomical unit = 93,000,000 miles). if a planet were 4 a. u. from the sun, how many years would it take to make 1 orbit?

During takeoff, the sound intensity level of a jet engine is 170db at a distance of 34 m. what's the sound intensity level at a distance of 1.0 km?

In physics the desire of an object to keep doing what it is doing is termed?

Aparticle initially moving east with a speed of 20.0 m/s, experiences an acceleration of 3.95 m/s, north for a time of 8.00 s. what was the speed of the particle after this acceleration, in units of m/s? give the answer as a positive number.