A lightweight electric car is powered by ten 12-V batteries. At a speed of 100 km/h, the average frictional force is 1500 N. What must be the power of the electric motor if the car is to travel at a speed of 100 km/h?

What is engine knock? What cause the engine knock problem?

What do you think of the category of polymer for making a helmet?

Mixing refrigerants can cause

What causes a boat to float? My questions are super easy. So you can follow me if you like easy question.

1. Which of the following is NOT an example of a lever? ☐ a hammer pulling a nail ☐ a staircase ☐ a seesaw ☐ a crowbar

Between a hypothesis and a prediction

A local reaction is when a chemical enters the bloodstream?

The rules for ordinary arithmetic involving addition, subtraction, and multiplication carry over into modular arithmetic. Tru

An air-conditioning system is used to maintain a house at 70°F when the temperature outside is 100°F. The house is gaining heat through the walls and the windows at a rate of 800 Btu/min, and the heat generation rate within the house from people,

The electricity we use is static or current electricity?