Adam applies an input force to the pulley as he pulls down to lift the object. as he does this, adam wonders about how the pulley is him. how is the pulley adam lift the object?
a. all of these answers are correct.
b. a fixed pulley lowers the amount of force needed to do the same amount of work.
c. a fixed pulley increases the distance over which the force is applied.
d. a fixed pulley adam change the direction of the effort force.

10 newton object is placed 3 meters from the fulcrum. at what distance on the other side would you need to place a 15 newton object to balance the lever? show your work!

Which best represents the law of conservation of mass ?

Sawyer is studying diffraction. he draws a diagram of a plane wave to show how light waves travel. which best describes sawyer’s error? the wave fronts should be perpendicular to the direction in which the waves move. the arrow showing the direction of movement of the waves should be pointing to the left. the arrow showing the direction of movement of the waves should be pointing downward. the wave fronts should be both parallel and perpendicular to the direction in which the waves move.