A paper weight is dropped from the roof of a block of multi storey flats. each storey being 3 metre high. it passes the ceiling of the 20th storey at 30m/s. if g=10m/s2, how many storeys does the flat have?

Use examples to explain how the geosphere interacts with two other of Earth's spheres. Explain the interaction for each using complete sentences. This is for science class

Match each type of energy with its description or example. A. light B. heat C. chemical D. mechanical E. electrical Answer A. form of energy visible to the human eye B. caused by the movement of electrons C.

Jack and Jill are maneuvering a 3100 kg boat near a dock. Initially the boat's position is m and its speed is 1.6 m/s. As the boat moves to position m, Jack exerts a force of N, and Jill exerts a force of N.

During the process of cellular respiration water becomes oxygen

What option lists the types of electromagnetic waves in order of increasing wavelength? A. visible light, ultraviolet, infrared B. ultraviolet, visible light, infared C. infared, ultraviolet, visible light D. visible light, infrared, ultraviolet

A vitamin called folic acid is very important for neural tube development, which is the development of the baby's

Which vocabulary term is survival of the fittest

An object weighs 32 newtons. What is its mass if a gravitometer indicates that g = 8.25 m/s2?

At what stage of a reaction do atoms have the highest energy? a. reactant stage b. product stage c. transition state stage d. The stage of highest energy depends on the atom.

A moon with a mass of 6.0 x 10 kg orbits about a planet with a mass of 5.0x 10^24 kg. They are 4.0 x 10^8 meters apart What is the gravitational force between them? The answer is 1.