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A space traveller weighs herself on Earth, at a location where the acceleration due to gravity is 9.82 m/s2, and finds a value of 571 N. What is her mass? The traveller travels to a planet in a neighboring galaxy. It is a long trip, but she somehow manages to maintain her physical condition by conscientious exercise and diet control. The acceleration due to gravity on this planet is 12.5 m/s2. What is the traveller\'s mass on the planet? and her weight there?
Two packing crates of masses m1 = 10.0 kg and m2 = 5.00 kg are connected by a light string that passes over a frictionless pulley as in Figure P4.26. The 5.50 kg crate lies on a smooth incline of angle 40.0°. Find out the acceleration of the 5.50 ..
A force of 13.3 N pulls horizontally on a 0.9 kg block that slides on a rough, horizontal surface, What is the acceleration of the blocks and What is the tension in the string
A wrecking ball (weight = 4800 N) is supported by a boom, which may be assumed to be uniform and has a weight of 3600 N. As support cable runs from the top of the boom to the tractor.
A glass window 0.45cm thick measures 80cm by 37cm. To compare the relative efficiency of air and glass as insulators, calculate the heat flows through this window
A 1.0-cm-diameter pipe widens to 2.0 cm, then narrows to 0.5 cm. Liquid flows through the first segment at a speed of 9.0 m/s. What is the speed in the second segment
A space vehicle is traveling at 4200 km/h relative to the Earth when the exhausted rocket motor is disengaged, What is the speed (km/h) of the command module relative to Earth after the separation
A plastic light pipe has an index of refraction of 1.49. For total internal reflection, what is the minimum angle of incidence if the pipe is in the following media
A guitar string is 92 cm long and has a mass of 3.8 g. From the bridge to the support post (= L) is 63 cm, What are the frequencies of the fundamental and first two overtones
A 0.290-kg block along a horizontal track has a speed of 1.60 m/s, What is the spring's maximum compression if the track is frictionless
A mortar crew is positioned near the top of a steep hill. Enemy forces are charging up the hill and it is necessary for the crew to spring into action.
3.00 m-long, 350 steel beams extends horizontally from the point where it has been bolted to the framework of a new building under construction. A 66.0 construction worker stands at the far end of beam.
One of the most powerful cranes in the world operates in Switzerland. It can slowly raise a load of M = 5230.0 tonnes to a height of h = 12.0 m, How much work is done by the crane
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