A 20cm-by-20 cm trap door is being held up by a rope that is attached to a wall at a 45 degree angle. if the weight of the door is 14 Newton's, what is the tension in the rope?

During spring semester at mit, residents of the parallel buildings of the east campus dorms battle one another with large catapults that are made with surgical hose mounted on a window frame. a balloon filled with dyed water is placed in a pouch attached to the hose, which is then stretched through the width of the room. assume that the stretching of the hose obeys hooke's law with a spring constant of 89.0 n/m. if the hose is stretched by 5.80 m and then released, how much work does the force from the hose do on the balloon in the pouch by the time the hose reaches its relaxed length? unitst 3 number-1497 the tolerance is +/-5% open show work click if you would like to show work for this question:

What is the measure of a change in an objects velocity?

Which lists the pairs of plates in order from least to greatest in terms of the work done to move the electron?