What correctly describes mechanical advantage

What is an example of a safe laboratory procedure

A power plant burns 1000 kg of coal each hour and produces 500 kW of power. Calculate the overall thermal efficiency if each kg of coal produces 6 MJ of energy.

If traveling at equal velocities, which object would have the most momentum

a circuit contains 2 ohm and 4 ohm resistors connected in parallel, find the total resistance & the amount of current in each resistor if it was connected to a 12 v battery

What makes an object stop, speed up, slow down or change direction? V2

Scientific method definition

An unwary football player collides with a padded goalpost while running at a velocity of 7.50 m/s and comes to a full stop after compressing the padding and his body 0.350 m. (a) What is his deceleration? (b) How long does the collision last?

If the force of friction resisting the students push is 4 N what is the net force acting on the board if the student is applying 10 N of force?

Suppose a well-designed optical instrument is composed of two converging lenses separated by 14 cm. The focal lengths of the lenses are 0.60 and 4.5 cm. Is the instrument a microscope or a telescope

Launch the simulation, then answer the question Which statement is not correct regarding the deformation of a circular shaft in torsion? Cross sections remain flat. Longitudinal lines remain straight. Circular sections remain circular.