What kind of simple machine is a swing

A transport truck pulls on a trailer with a force of 600N [E]. The trailer pulls on the transport truck with a force A) of zero b) of less than 600 N is the truck is slowing down c) equal to 600 N only if the truck is moving at constant velocity d)

The flow of electrical current is possible because electrons are able to move from one atom to another;

What causes the granular structure on the sun's photosphere?

Usted arrastra los pies sobre un piso alfombrado en un día seco y la alfombra adquiere una carga positiva neta. a) Usted a deficiencia o 2) un exceso de electrones? b) Si la carga adquirida tiene una magnitud de 2.

How is psychology considered a science

What uses electricity

How do invasive species spread? identify three methods. Why do invasive species pose such a threat?

If earth somehow expanded to a larger radius, with no change in mass, how would you're weight be affected? How would it be affected if earth shrunk?

Consider a helium balloon on a string tied to the seat of your stationary car. The windows are closed, so there is no air motion within the car. The car begins to accelerate forward. Which way will the balloon lean, forward or backward

The force of gravity acts upon meteors from the rocky asteroid belt between mars and Jupiter. Where is the force of gravity most likely to pull these meteors