Which of the following explains why a bicycle uses a lever?

reduces the effort force*I picked this one

increases the effort force

reduces the resistance force

increases the resistance force

How do you increase the mechanical advantage of a ramp?

A 1,790 W toaster, a 1,480 W electric frying pan, and a 60 W lamp are plugged into the same outlet in a 15 A, 120 V circuit. (The three devices are in parallel when plugged into the same socket.

True or False: When describing motion, there is no need to include the type of motion.

Why can you see your own face in a mirror?

The product of an object's mass and velocity is its

Which phases of matter do molecules have the lowest amount of energy?

How many Oxygen (O) atoms are in the following? H2O + CO2 4 3 2

How does surface roughness affect friction

Why does it hurt your hands when you carry heavy shopping in carrier bags?

Why did scientists choose carbon as a base for the atomic mass unit? Which isotope of carbon did they use?