At a coal mine, a train engine bumps an empty hopper car that has a mass of 1 * 10^4 kg such that it rolls at a constant speed of 2 m/s under a coal storage bin. When the car triggers a switch on the track under the storage bin, the bin drops a load of 1.2*10^4 kg of coal into the hopper car. What is the speed of the cart after the additional coal?
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Physics, 23.06.2019 01:30
Lacie kicks a football from ground level at a velocity of 13.9 m/s and at an angle of 25.0° to the ground. how long will the ball be in the air before it lands? round your answer to the nearest tenth. s how far will the football travel before it lands? round your answer to the nearest tenth. m
Answers: 3
Physics, 23.06.2019 02:00
Compare the maximum rate of heat transfer to the basal metabolic rate by converting a bmr of 88 kcal/hr into watts. what is the value? from this comparison you should see why the body can accommodate a modes amount of activity in hot weather but strenuous activity would increase the metabolic rate above the body's ability to remove heat [12].
Answers: 3
Physics, 23.06.2019 02:50
You are your friend move a new refrigerator into his kitchen. you apply a horizontal force of 252 n in the negative x direction to try and move the 56 kg refrigerator. the coefficient of static friction is 0.61. (a) how much static frictional force does the floor exert on the refrigerator? give both magnitude (in n) and direction. magnitude n direction (b) what maximum force (in n) do you need to apply before the refrigerator starts to move?
Answers: 1
Physics, 23.06.2019 12:30
Which two body systems, when working together, give your body shape and allows you to move around, like the boy seen here? a) muscular and skeletal b) digestive and skeletal c) skeletal and circulatory d) cardiovascular and skeletal
Answers: 2
At a coal mine, a train engine bumps an empty hopper car that has a mass of 1 * 10^4 kg such that it...
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