Physics, 30.03.2020 18:52 ameliaxbowen7
You throw a ball with a mass of 0.50 kg against a brick wall. It hits the wall moving horizontally to the left at 20 m/s and rebounds horizontally to the right at 10 m/s. (a) Find the impulse of the net force on the ball during its collision with wall. (b) If the ball is in contact with the wall for 1.0 ms (0.001 s), find the magnitude of average horizontal force that the wall exerts on the ball during the impact.
Answers: 3
Physics, 22.06.2019 03:30, biancabell3
Acoyote chasing a rabbit is moving 8.00 m/s due east at one moment and 8.80 m/s due south 4.25 s later. let the x axis point due east and the y axis point due north. find the direction of the coyote's average acceleration during that time.
Answers: 1
Physics, 22.06.2019 08:00, booitsmrradl3385
While studying chemical reactions and conservation of matter, sarah's class conducted a variety of experiments. sarah and her lab partner found the mass of a wax candle and placed the candle in a flask. the students lit the candle and let it burn to completion. all that was left was wax and charred candle wick. per their teacher's instructions, the students found the mass of the products. their data can be seen in the data table. formulate a hypothesis the students could test to explain why the experiment did not support the law of conservation of matter. a) the students could repeat the experiment using different candles; there might have been a flaw in the candle. b) the experiment should be repeatable. the students should run several trials and then take an average of the after mass in each trial. c) the students should have someone in the class check their measurement skills as they repeat the experiment. they may have made an error using the balance. d) the students should burn the candle in a container that has some type of lid so that any gas that is a product of the reaction can be contained and massed. submit
Answers: 2
Physics, 23.06.2019 23:50, rosezgomez97
Which of the following technologies is based on the work of marie sklodowska-curie? o a. computer models to predict the effects of climate change o b. radiation treatments for breast cancer o o c. an orbiting observatory to detect x-rays from space objects d. undersea fiber-optic communications cables
Answers: 3
You throw a ball with a mass of 0.50 kg against a brick wall. It hits the wall moving horizontally t...
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