A paper weight is dropped from the roof of a block of multi story flats. Each storey being 3 metre high. It passes the ceiling of the 20th storeys at 30m/sec. If g = 10.0m/sec^2, How many storeys does the flat have.

A meteor is approaching Earth. Which statement about its motion is true? The meteor travels upward relative to Earth. The meteor accelerates. The meteor is out of Earth's gravitational force field. The meteor falls with a constant velocity.

A 1425 kg car located at m has a momentum of kg·m/s. What is its location 11 s later? (Express your answer in vector form.)

A particular battery lasts 14.5 hours. what percentile is its lifetime on?

The electrons sulfur (s) is most likely to form covalent bond with the element

Any form of stored energy is called

Why did the work of Rutherford and Marsden convince many scientists that the 'plum pudding' model of the atom was incorrect?

Current always returns to the: a) positive battery terminal b) negative battery terminal

Which processes cause rocks to be exposed at Earth's surface? SC. 7 ... 6.2

Compare and contrast the terms melting and freezing

A medical cyclotron used in the production of medical isotopes accelerates protons to 6.5 MeV. The magnetic field in the cyclotron is 1.9 T.