Physics, 19.07.2019 19:50 cvhufjbvbcxx2406
1.) an object moves along the x axis, subject to the potential energy shown. the object has a mass of 1.1kg and starts at rest at point a. (a) what is the object’s speed at point b? (b) at point c? (c) at point d? (d) what are the turning points for this object? 2.) a 1250-kg car drives up a hill that is 16.2m high. during the drive, two nonconservative forces do work on the car: (i) the force of friction, and (ii) the force generated by the car’s engine. the work done by friction is -3.11x10^5j; the work done by the engine is +6.44x10^5j. find the change in the car’s kinetic energy from the bottom of the hill to the top of the hill. 3.) starting at rest at the edge of a swimming pool, a 72.0-kg athlete swims along the surface of the water and reaches a speed of 1.20m/s by doing the work wncl=+161j. find the nonconservative work, wnc2, done by the water on the athlete. 4.) starting at rest at the edge of a swimming pool, a 72.0-kg athlete swims along the surface of the water and reaches a speed of 1.20m/s by doing the work wncl=+161j. find the nonconservative work, wnc2, done by the water on the athlete.
Answers: 1
Physics, 21.06.2019 20:30
Aball is thrown straight up into the air with a speed of 21 m/s. if the ball has a mass of 0.1 kg, how high does the ball go? acceleration due to gravity is g = 9.8 m/s^2. a. 22.5 m b. 20.0 m c. 25.0 m d. 17.5 m
Answers: 2
Physics, 21.06.2019 22:00
Orque can be calculated by multiplying the force (n) applied at 90? to the lever arm at a distance (m) from the pivot point (point of rotation), the compound si unit for the torque is n? m. if the force (at 90? to the lever arm) applied is 15 n and it is applied at 2.0 m from the pivot point (point of rotation), what is the torque on the lever?
Answers: 3
Physics, 22.06.2019 04:00
10 newton object is placed 3 meters from the fulcrum. at what distance on the other side would you need to place a 15 newton object to balance the lever? show your work!
Answers: 2
Physics, 22.06.2019 10:30
The precision of a laboratory instrument is ± 0.05 g. the accepted value for your measurement is 7.92 g. which measurements are in the accepted range? check all that apply. 7.85 g 7.89 g 7.91 g 7.97 g 7.99 g
Answers: 1
1.) an object moves along the x axis, subject to the potential energy shown. the object has a mass o...
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