1.7 In one of the experiments, the trolley of mass 0.2 kg is on a frictionless horizontal
table. The trolley is joined to a hanging masspiece of mass 0,05 kg. The trolley and
the masspiece are joined together with an inelastic string of negligible mass and
runs over a frictionless pulley​

If a tank filled with water contains a block and the height of the water above point a within the block is 0.8 meter, what is the pressure at point a?

In the circuit, the switch s has been open for a long time and r = 125 kohm. it is then suddenly closed. (a) determine the time constant before the switch is closed. s (b) determine the time constant after the switch is closed. _ s (c) let the switch be closed at t = 0. find the current in the switch as a function of time. (use t for time. express your answer in milliamps and seconds.) i(t) =_

Which magnetic property best describes a magnet’s ability to act at a distance? magnets are dipolar. magnets attract only certain objects. magnets have magnetic fields. magnets can transfer their properties to certain materials.