Physics, 21.09.2019 04:10 certifiedtino4576
Apaintball’s mass is 0.0032kg. a typical paintball strikes a target moving at 85.3 m/s.
a) if the paintball stops completely as a result of striking its target, what is the magnitude of the change in the paintball’s momentum?
b) if the paintball bounces off its target and afterward moves in the opposite direction with the same speed, what is the magnitude of the change in the paintball’s momentum?
c) the strength of the force an object exerts during impact is determined by the amount the object’s momentum changes. use this idea along with your answers to (a) and (b) to explain why a paintball bouncing off your skin hurts more than a paintball exploding upon your skin.
Answers: 3
Physics, 22.06.2019 15:50, potatocow
The california mussel (mytilus californianus) attaches itself to a rock or other solid surface with a bundle of filaments known as the byssus. imagine that 15.0 j of work is done to stretch the distal end of the byssus. it releases 10.8 j of thermal energy as it relaxes. what is the resilience of the distal end of the byssus?
Answers: 2
Physics, 22.06.2019 18:00, hannacarroll2539
Athin nonconducting rod with a uniform distribution of positive charge q is bent into a circle of radius r. the central perpendicular axis through the ring is a z-axis, with the origin at the center of the ring. a) what is the magnitude of the electric field due to the rod at z = 0? n/c (b) what is the magnitude of the electric field due to the rod at z = infinity? n/c (c) in terms of r, at what positive value of z is that magnitude maximum? r (d) if r = 4.00 cm and q = 9.00 µc, what is the maximum magnitude? n/c
Answers: 1
Apaintball’s mass is 0.0032kg. a typical paintball strikes a target moving at 85.3 m/s.
a) if...
a) if...
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