Physics, 17.01.2020 16:31 angieplasencia8
What should a free-body diagram look like for a skydiver who has opened his parachute and is now slowing down as he falls?
there is an arrow up for air resistance and an arrow down for gravity. the arrow up is longer than the arrow down.
there is only an arrow down for gravity.
there is an arrow up for air resistance and an arrow down for gravity. the arrows are the same length.
there is an arrow up for air resistance and an arrow down for gravity. the arrow up is shorter than the arrow down.
Answers: 1
Physics, 22.06.2019 05:10
Total solidification times of three casting geometries are to be compared: a sphere, a cylinder, in which the length-to-diameter ration - 1.0, and a cube. volume = 1000 cm^3 for all three shhapes, and the same casting alloy is used. a) determine the solidification times of each geometry b) based on the results of part (a), which geometric element would make the best riser? c) if the mold constant = 3.5 min/cm^2 in chvorinov's rule, compute the total solidification time for each casting.
Answers: 3
Physics, 22.06.2019 11:00
What is the measurement of how fast an object moves relative to a reference point?
Answers: 1
Physics, 22.06.2019 16:30
An astronaut in space cannot use a scale or balance to weigh objects because there is no gravity. but she does have devices to measure distance and time accurately. she knows her own mass is 77.4 kg , but she is unsure of the mass of a large gas canister in the airless rocket. when this canister is approaching her at 3.50 m/s , she pushes against it, which slows it down to 1.30 m/s (but does not reverse it) and gives her a speed of 2.60 m/s . what is the mass of the canister?
Answers: 1
Physics, 22.06.2019 18:00
Gabby calls her cousin who lives in a different state and tells her to turn her radio to channel 98.7 so they can listen to their favorite song that is playing. her cousin turns her radio to 98.7, but does not hear the same song gabby hears. which most likely explains why?
Answers: 1
What should a free-body diagram look like for a skydiver who has opened his parachute and is now slo...
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