Physics, 12.11.2019 04:31, baleighharris
Aperson pushing a horizontal, uniformly loaded, 23.90 kg23.90 kg wheelbarrow of length is attempting to get it over a step of height β=0.=0.370r, where is the wheel's radius. the center of gravity of the wheelbarrow is in the center of the wheelbarrow. what is the horizontal component pxpx of the minimum force pβ pβ necessary to push the wheelbarrow over the step? the gravitational acceleration is =9.81 m/s2.
Answers: 2
Physics, 21.06.2019 22:30, cocodemain
A1200 kg car traveling north at 10 m/s is rear-ended by a 2000 kg truck traveling at 30 m/s. what is the total momentum before and after the collision?
Answers: 3
Physics, 22.06.2019 03:30, coollid876
Imagine you are riding on a yacht in the ocean and traveling at 20 mph. you then hit a golf ball at 100 mph from the deck of the yacht. you see the ball move away from you at 100mph, while a person standing on a near by beach would observe your golf ball traveling at 120 mph (20 mph + 100 mph). now imagine you are aboard the hermes spacecraft traveling at 0.1c (1/10 the speed of light) past mars and shine a laser from the front of the ship. you would see the light traveling at c (the speed of light) away from your ship. according to einsteinβs special relativity, how fast will a person on mars observe the light to be traveling? a) 0.1c (1/10 the speed of light) b) c (the speed of light) c)1.1c (c+0.1c)
Answers: 1
Physics, 23.06.2019 01:30, puremousetail
Aplane's average speed between two cities is 600 km/h. if the trip takes 2.5 hours, how far does the plane fly?
Answers: 2
Aperson pushing a horizontal, uniformly loaded, 23.90 kg23.90 kg wheelbarrow of length is attemptin...
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