Which of the following would decrease the mechanical advantage

A) a fulcrum

B) a fixed pulley

C) friction

D) heat

What can you do to mitigate these risks?

A trailer mechanic pushes a 2500 kg car, home to a speed v, performing a job during the 5000 J. In this process, the car moves 25 m.

An 73 cm long pendulum with a 0.80 kg bob is released from rest at an initial angle of θ0 with the vertical. at the bottom of the swing, the speed of the bob is 2.8 m/s. (a) what is θ0?

The same explosive charge is used, so the total energy of the cannon plus cannonball system remains the same.

Describe the relationship of the Earth's lithosphere to the asthenosphere.

In the Copper Plating Solution lab, you placed copper (Cu) pennies in vinegar. Vinegar is a weak acid with hydrogen ions (H+). When you put the pennies in the vinegar, you should have observed small gas bubbles.

Gravity decreases with distance. Which statement is also true? Orbital speed increases with distance. Orbital speed decreases with distance. Orbital speed remains constant with distance. Orbital speed varies based on the functions of friction.

Suppose the time taken for light to bounce to and fro between the parallel mirrors of a light clock is 1 second, in the frame of reference of the light clock.

Why does the modern model use an electron cloud?

The engineering quadrangle is approximately 235 meters above sea level. If the temperature is 15 degrees Celsius, is that above, below, or equal to the standard temperature for this altitude?