Megan tries to open a door, but she is unable to push at a right angle to the door. so, she pushes the door at an angle of 55º from the perpendicular. how much harder would she have to push to open the door just as fast as if she were to push it at 90º

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.

The average density of the planet uranus is 1.27 103 kg/m3. the ratio of the mass of neptune to that of uranus is 1.19. the ratio of the radius of neptune to that of uranus is 0.969. find the average density of neptune.

What energy transformations occur each time the skateboarder rolls up the ramp?