A 7.0kg ball is given an initial velocity of 14m/s and then is rolled along the floor. A friction force of 2.5N opposes its motion. For what length of time will it roll before stopping.

Which statement best describes air pressure at high altitudes?

You would the largest mass of gold if your chunk of gold weighed 1n on

If the diameter of the space station is 730 m, how many revolutions per minute are needed for the "artificial gravity" acceleration to be 9.80m/s2?

6. A train starts from rest and accelerates uniformly until it has traveled 5.6 km and acquired a velocity of 42m/s What is the approximate acceleration of the train during this time? 0.17 m/s2 0.20 m/s2 0.16 m/s2 0.14 m/s2 0.19 m/s2

write a one or two summary paragraph discussing this experiment and the results use tye following questions 1 according to your data was your hypothisis correct be sure to refer your data when answering this question 2 summarize ang difficulties or

Which of the following statements about dark matter and dark energy is/are true? Choose one or more: Both exceed the matter-energy equivalent of luminous matter. Dark matter has only an attractive gravitational effect, while dark energy is repulsive.

On the sun is the corona above the photosphere?

Which sequence shows electromagnetic waves arranged from shorter to longer wavelengths?. A. visible light, infrared radiation, microwaves, and ultraviolet rays. B. infrared radiation, Visible light, ultraviolet rays, microwaves. C.

Will the April 29th 2020 astroid be the end of humanity as we know it?

Which option identifies the two natural wind patterns that move air masses in the United States?