Physics, 29.06.2019 16:30 emmacox069
Suppose two children push horizontally, but in exactly opposite directions, on a third child in a wagon. the first child exerts a force of 75.0 n, the second a force of 90.0 n, friction is 12.0 n, and the mass of the third child plus wagon is 23.0 kg. (a) what is the system of interest if the acceleration of the child in the wagon is to be calculated? (b) draw a free-body diagram, including all forces acting on the system. (c) calculate the acceleration. (d) what would the acceleration be if friction were 15.0 n?
Answers: 1
Physics, 20.06.2019 18:04, reganleigh00
The cement bag shown in the figure has a mass of 50 kg and the small pulley has a mass of 2 kg. if the cement bag is pulled upwards with an acceleration of 2 m/s^2, find the force f pulling the rope.
Answers: 2
Physics, 21.06.2019 21:30, gabrielolivas59
The earth remains in orbit around the sun due to the force of gravity. how does the force of gravity exerted by the sun on the earth compare to the force of gravity exerted by the earth on the sun?
Answers: 1
Physics, 22.06.2019 07:50, dimondqueen511
Calculate the ratio of h+ ions to oh– ions at a ph = 6. find the concentration of h+ ions to oh– ions listed in table b of your student guide. then divide the h+ concentration by the oh– concentration. record this calculated ratio in table a of your student guide. compare your approximated and calculated ratios of h+ ions to oh– ions at a ph = 6. are they the same? why or why not? record your explanation in table a. what is the concentration of h+ ions at a ph = 6? mol/l what is the concentration of oh– ions at a ph = 6? mol/l what is the ratio of h+ ions to oh– ions at a ph = 6? : 1
Answers: 1
Suppose two children push horizontally, but in exactly opposite directions, on a third child in a wa...
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