Aman cleaning his apartment pushes a vacuum cleaner with a force of magnitude 39.9 n. the force makes an angle of 24.7° with the horizontal floor. the vacuum cleaner is pushed 2.51 m to the right along the floor.
calculate the work done by the 39.9 n force. answer in units of j.

This is for my 8th grade science class, i really don’t understand. can someone me? , lol.

Agraduated cylinder contains 63.0 ml of water. a piece of gold, which has a density of 19.3 g/ cm3, is added to the water and the volume goes up to 64.5 ml. calculate the mass in grams of the gold that was added to the water. explain how you got your answer.

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.