Physics, 08.12.2021 01:00 lorelaistudent
Problème 4 (à faire à la maison) Quand un conducteur applique les freins sur sa camionnette qui roule à 20 km/h il a besoin de 3 m pour s'immobiliser. De quelle distance a-t-il besoin s'il roule à 40 km/h ? 1 Rép: d = 12 m
Answers: 1
Physics, 22.06.2019 14:40
The experiment done in lab is repeated, using a ball that has unknown mass m. you plot your data in the form of f 2 versus m/l, with f in rev/s, m in kg, and l in m. your data falls close to a straight line that has slope 3.19 m/(kg · s2). use g = 9.80 m/s2 and calculate the mass m of the ball.
Answers: 1
Physics, 22.06.2019 15:30
This is the number of complete movements of a wave per second.
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Physics, 22.06.2019 18:30
Arailroad car collides with and sticks to an identical railroad car that is initially at rest. after the collision, the total kinetic energy of the two cars is a) the same as before. b) half as much as before. c) one third as much as before. d) one fourth as much as before. e) twice as much as before.
Answers: 1
Problème 4 (à faire à la maison) Quand un conducteur applique les freins sur sa camionnette qui roul...
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