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

A square plate has an area of 29.00 cm2 at 20.0? C. It will be used in a low temperature experiment at T = 10.0 K where it must have an area of 28.00 cm2. What area must be removed form the plate at 20.0 °C for it to have the correct area at 10.

What a relationship between flame color and chemical name.

Two charged particles (Q1 = 0.000003 C; Q2 = 0.000003 C) a distance 0.02 m from each other. Find the Force on the particles?

Who made the very first solar cell and in what year?

Which states of matter have particles that live independently of one another with very little attraction

A clock moves past you at a speed of 0.9 c. How much time passes for you for each second that elapses on the moving clock? 0.436 s 1.15 s 2.29 s infinity

A 0.18-kg ball on a stick is whirled on a vertical circle at a constant speed. When the ball is at the three o'clock position, the stick's tension is 19 N.

Which are examples of transverse waves? Check all that apply. earthquake P-waves earthquake S-waves radio waves sound visible light X-rays

To lift a car, you use a hydraulic lift filled with a fluid that has density of 1 1200 kg/m3. The radius of one half of the lift is 0.5 meters and the diameter of the other half of the lift is 2.5 meters.

Charlie runs an auto repair and mechanic shop. A hot rod has come in with mass 1500 kg requiring a repair. He needs to raise the car using a hydraulic lift on a piston (Piston A) having a radius of 25 cm.