The electrostatic force of attraction between two charges, a and b, is proportional to

A cyclist averages 50 m/s. If the course is 80,000m long. How many seconds will it take to complete the course?

You throw a ball straight upward. As it leaves your hand, its speed is 15 m/s. (a) How much time does it take for the ball to reach the top of its trajectory? Start from a fundamental principle and show all your work.

What will be the result of sea level rising, causing the ocean to fill a glacially carved valley?

Two skaters, a man and a woman, are standing on ice. Neglect any friction between the skate blades and the ice. The mass of the man is 86 kg, and the mass of the woman is 51 kg. The woman pushes on the man with a force of 46 N due east.

Which of the following statements has NOT been indicated by research on food and hunger behaviors? A) Forcing children to eat specific foods often has a negative effect on food preference.

Pure water has a hydrogen ion concentration of 1 x 10 (-7) M and a ph of 7. A student measures a basic solution and finds that it has a hydrogen ion (H+) concentration of 1 x 10 (-3).

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A train travels 53 kilometers in 4 hours, and then 90 kilometers in 3 hours. What is the average speed

What units should be used when measuring the mass of a lady bug?

What happens if you don't wear your school uniform?