Physics, 03.02.2020 20:04 Conpolice1309
Aboy uses a force to keep a rock from falling. (he is carrying the rock.) some forces, like this one, act only when two objects are touching. which force usually acts between objects that are not touching?
a. friction
b. gravity
c. pulling
d. pushing
Answers: 3
Physics, 22.06.2019 16:50, anaismami1
During a medieval siege of a castle, the attacking army uses a trebuchet to hurl heavy stones at the castle walls. if the trebuchet launches the stones with a velocity of at an angle of 50.0°, (a) how long does it take the stone to hit the ground? (b) what is the maximum distance that the trebuchet can be from the castle wall to be in range? (c) how high will the stones go? show all your work.
Answers: 2
Physics, 23.06.2019 12:20, lindseyklewis1p56uvi
The lid of a pressure cooker forms a nearly airtight seal. steam builds up pressure and increases temperature within the pressure cooker so that food cooks faster than it does in an ordinary pot. the system is defined as the pressure cooker and the water and steam within it. if 2.0 g of water is sealed in a pressure cooker and then vaporized by heating, and 5655 j must be added as heat to completely vaporize the water, what is the change in the system’s internal energy? answer in units of j.
Answers: 3
Physics, 23.06.2019 13:00, yashajanjan8550
An 800 kg car is moving at 32 m/s when it hits the afterburner. the after burner applies a 180,000 n force for 25 seconds. what is the rockets final speed?
Answers: 1
Aboy uses a force to keep a rock from falling. (he is carrying the rock.) some forces, like this one...
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