Twin sisters Annie and Hannah are fighting

over their favourite toy. Annie pulls with a

force of 25N to the left. Hannah pulls with

a force of 30N to the right. What is the net

force on the toy?

What WA can friction do to things like break pads

Helium is an unreactive gas with a high specific heat capacity. suggest a possible use for helium

Can we use a copper wire instead of eureka wire

Animal studies indicate that

The weight of an apple near the surface of the Earth is 1 N. What is the weight of the Earth in the gravitational field of the apple?

If a chromosome on unfolds itself how is transcription enhanced

Two friends, barbara and neil, are out rollerblading. with respect to the ground, barbara is skating due south at a speed of 5.9 m/s. neil is in front of her. with respect to the ground, neil is skating due west at a speed of 1.4 m/s.

What process is used when the sun transfers light to plants A. conduction B. radiation C. convection D. all of these

Which wave characteristic has the unit hertz

A stretched spring has 5184 J of elastic potential energy and a spring constant of 16,200 N/m. What is the displacement of the spring?