A rock tied to the end of a string moves in a circle of radius 1.2m with a constant speed of 3.0 m/s. Calculate the centripetal acceleration of the rock.

There would be a change in the day and night cycle on earth if there was a change in the?

Why can we still see craters on the moon even though they were formed by ancient meteor collisions?

An FM radio station has a wavelength of 3.387 m. Convert this length to feet. 3.387 m = ft How many significant figures should there be in your answer?

Which layer is the most dense layer of earth? A. outer core B. mantle C. inner core D. crust

why does carrying furniture up four flights of stairs require twice as much work as caring furniture up two flights of stairs

Why does it hurt your hands when you carry heavy shopping in carrier bags?

Why did scientists choose carbon as a base for the atomic mass unit? Which isotope of carbon did they use?

What organelle is found in all animal cells and some plant cells

Basic of Archimedes's principle of how fluid can make body to float and sink.

A bullet is accelerated down the barrel of a gun by hot gases produced in the combustion of gun powder. What is the average force (in N) exerted on a 0.0500 kg bullet to accelerate it to a speed of 625 m/s in a time of 1.10 ms (milliseconds)