If the earth had twice its present mass, its orbital period around the sun (at our present distance from the sun) would be

What is the relationship between DNA and RNA? A. Both DNA and RNA contain the set of instructions for the cell. B. Both RNA and DNA send information from the nucleus out to other parts of the cell. C.

What are possible problems with wave generators?

A 15-turn rectangular loop of wire of width 10 cm and length 20 cm has a current of 2.5 A flowing through it. Two sides of the loop are oriented parallel to a uniform magnetic field of strength 0.

An 800-N billboard worker stands on a 4.0-m scaffold supported by vertical ropes at each end. If the scaffold weighs 500 N and the worker stands 1.0 m from one end, what is the tension in the rope nearest the worker?

5. Ultraviolet rays are potentially harmful to us primarily due to their A. intensity B. high frequency. C. long wavelength. D. amplitude.

Fusion occurs with atoms of elements less massive than a. iron. b. helium. c. calcium. d. uranium.

Which describes what happens when fuel is ignited in a heat engine? A. Chemical energy is converted into thermal energy B. Thermal energy is converted into solar energy. C. Solar energy is converted into chemical energy D.

What happens during the intake and compression strokes of a four stroke engine?

Which of the following is a protection provided by the layers of Earth's atmosphere? (AKS4a DOK2) * A. Increasing the Sun's harmful UV rays reaching living things on Earth B.

Whats a similarity between distance and displacement