In a swimming race, miho swam the first 50m in42s. she swam the second 50m in40s. what was miho's average speed during the race?

A machine does 2500 J work in 1 minute what is the power developed by the machine?

Which best describes the direction of heat? (a) from a substance with no thermal energy to a substance with high amounts of thermal energy (b) from a substance with less thermal energy to a substance with more thermal energy (c) from a cooler

How do you Convert kilograms to newtons?

A bicycle and rider travel along a road. Which of the following statements is true? a. Only the bicycle rider undergoes a translation. b. The bicycle wheels rotate and translate the entire bike and the rider c.

Why do we always see the same side of the Moon

Which of the following is a feature of the sun's radiation? A. It cannot travel through air. B. It cannot travel through vacuum. C. It is made up of rays of the same frequency. D. It is made up of rays of different wavelengths.

determine the pressure exerted on the surface of a submarine cruising 175 ft below the free surface of the sea. assume that the barometric pressure is 14.7 psia and the specific gravity of seawater is 1.03.

9. An astronaut of mass 90 kg walks in space outside her spaceship and receives a 30-N force from a nitrogen spurt gun. What acceleration does she experience?

Which of the following describes the charge of an atom before any electrons are transferred? positive charge negative charge it depends on the number of protons and neutrons neutral charge

A slow jogger runs a mile in 16 minutes. Calculate the speed in