Where does the energy come from?

Does anyone know how to do this question? Force = 7kN Pressure = 1mPa Area = ?

Which of the following statements correctly described natural electric fields? Thunder is evidence of electric fields in the atmosphere.

Two fans are watching a baseball game from different positions. One fan is located directly behind home plate, 18.3 m from the batter. The other fan is located in the centerfield bleachers, 127 m from the batter.

The 8 mm diameter bolt is made of an aluminum alloy. It fits through a magnesium sleeve that has an inner diameter of 20 mm.

A beam of yellow light is made to pass through two slits that are 3.0 x 10-3 meters apart. On a screen 2.0 meters away from the slits, an interference pattern appears with bands of light separated by 3.9 x 10-4 meters.

Trent got a set of building blocks for his fifth birthday. He wanted to call his dad who lives out of state and share the exciting news about his gift.

What is the orbital radius of venus if venus has an average orbital period of 0.615 years

What is a physical property of a water bottle?

A certain kind of glass has an index of refraction of 1.640 for blue light of wavelength 440 nm and an index of 1.595 for red light of wavelength 670 nm. If a beam containing these two colors is incident at an angle of 30.

What does the gradient of a distance time graph show?