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?

Which event would produce electromagnetic radiation?

Collaboration and communication are important in science because?

A 0.45 kg ball is moving horizontally with a speed of 5.3 m/s when it strikes a vertical wall. The ball rebounds with a speed of 2.4 m/s. What is the magnitude of the change in linear momentum of the ball

An animal is not able to see in a dark environment. What other ways could the animal gather information about its surroundings to find food in the dark?

A rollercoaster starts at a height of 30m above the ground. At the bottom of a loop. The rollercoaster is at a height of 10m. Approximately, how much gravitational potential energy is lost by a 75kg rider? A. 19.6 joules. Eliminate. B. 1470 joules.

Why can't we see all types of waves in the electromagnetic spectrum?

Two sinusoidal waves travel along the same string. They have the same wavelength and frequency. Their amplitudes are ym1 = 2.5 mm and ym2 = 4.5 mm, and their phases are π / 4 rad and π / 2 rad, respectively.

How are mathematics and science related?

What process is used when electrons are transferred from one object to another to produce static electricity?

What happens during an equinox?