If a string completes 500 vibrations in one second, what is its frequency?

Which of these best describe why Earths inner core is a solid

3. What is the mass of an object that is experiencing a net force of 200 N and an acceleration of 500 m/s"?

How much farther will a car skid if it locks its brakes at 60 mph as compared to a skid from 15 mph? Assume the braking force that will eventually stop the cars is provided by the road and that it acts with equal magnitude in both situations.

What does sound travel throu better

Which aspect of the personality exists from birth? 1. The ego 2. The id 3. The alter ego 4. The superego

Imagine you fill an insulated cup almost full with chopped or crushed ice, and measure the temperature after a minute or two, once it's all come to thermal equilibrium.

A 23kg block at rest on a flat surface experiences 200 N of friction. What is the coefficient of friction for the surface

Some ideas for 7th grade science fair projects

A mover pushes a 245 kg piano so that it accelerates uniformly from rest to 1.5 m/s in 5.00 s. What is the power delivered by the mover in this time interval? A 55W B 110W C 280W D 540 W

A ball is thrown vertically upward from the top of a 100 foot tower, with an initial velocity of 10 ft/sec. Its position function is s (t) = - 16t2 + 10t + 100. What is its velocity in ft/sec when t = 2 seconds?