Physics, 26.12.2019 05:31, alanisalvarez2000
Arubber ball is dropped and bounces vertically from a horizontal concrete floor. if the ball has a speed of 4.1 m/s just before striking the floor, and a speed of 3.9 m/s just after bouncing, find the average force of the floor on the ball. assume that the ball is in contact with the floor for 0.26 s, and that the mass of the ball is 0.44 kg.
Answers: 1
Physics, 22.06.2019 03:50, ash011519
The force acting on a beam was measured under the same operating conditions and a sample of 5 data points was collected. this process was repeated by 3 observers. the pooled standard deviations of these 3 data sets was 1.21. determine the true mean force using all pooled data (with a 95% probability). the result should look like this: true mean = mean +/- margin of error
Answers: 1
Physics, 22.06.2019 12:00, P4thing
Under the action of a constant force an object accelerates at 7.8 m/s2. what will the acceleration be if (a) the force is halved? (b) the object's mass is halved? (c) the force and the object's mass are both halved? (d) the force is halved and the object's mass is doubled?
Answers: 3
Physics, 22.06.2019 19:00, bradleycawley02
What is the gravitational attraction between a dating couple whose centers of mass are 0.630 m apart if the boy weighs 715 n and the girl weighs 465 n?
Answers: 3
Arubber ball is dropped and bounces vertically from a horizontal concrete floor. if the ball has a s...
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