Physics, 30.10.2019 04:31 memelord0111011
Professional baseball pitchers deliver pitches that can reach the blazing speed of 100 mph (miles per hour). a local team has drafted an up-and-coming, left-handed pitcher who can consistently pitch at 42.91 m/s (96.00 mph) . assuming a pitched ball has a mass of 0.1424 kg and has this speed just before a batter makes contact with it, how much kinetic energy does the ball have?
Answers: 3
Physics, 22.06.2019 06:30, vaelriacb9300
Suppose you have a box. which of these is not necessarily a true statement regarding the relationship between the force applied to the box, the work done on the box, and the distance the box is moved? a. if the box is not moved, no force is being applied to the box. b. if no force is applied to the box, no work is done on the box. c. if work is done on the box, then a force is applied to the box. d. if work is done on the box, then the box is moved a distance.
Answers: 2
Physics, 23.06.2019 18:30, martinmorsette
Why does lightning travel from clouds to the ground? a. the negatively charged ground attracts the positive charge from the clouds b. charges are exchanged between negatively charged clouds and positively charged ground c. gravity pulls the negatively charged energy from clouds downward d. gravity pulls the positively charged energy from clouds downward
Answers: 3
Physics, 23.06.2019 20:00, cat20220
A0.5-kg object is connected to a spring that undergoes oscillatory motion. there is friction between the object and the surface it is kept on given by coefficient of friction μk = 0.06 . if the object is released 0.2 m from equilibrium, what is the distance that the object travels? given that the force constant of the spring is 50 n m-1 and the frictional force between the objects is 0.294 n.
Answers: 3
Professional baseball pitchers deliver pitches that can reach the blazing speed of 100 mph (miles pe...
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