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How much work does a steam crane need to do in order to lift a 108,500 kg locomotive back onto the track if the locomotive has been derailed into a ditch 3.25 meters below the level of the tracks?
Calculate the gravitational potential energy of the locomotive when it is on the track with repsect to its positon in the ditch.
How much power must the crane have to make this lift in 20.5 seconds?
q1. a lawn roller is rolled across a lawn by a force of 128 n along the direction of the handle that is 16.1 above the
At t=0 a grinding wheel has an angular velocity of 30.0 rad/s. It has a constant angular acceleration of 31.0 rad/s^2 until a circuit breaker trips at time t = 2.00 s. From then on, it turns through an angle 428 rad as it coasts to a stop at constant..
A heat engine has an efficiency of 61.5% and it exhausts 7500 J of waste heat into the environment. How much work is performed by the previous heat engine
An object acted on by three forces moves with constant velocity. One force acting on the object is in the positive x direction, Find the direction of the third force acting on the object
Why have so many jurisdictions turned to forms of ADR to supplement the judicial process and what are the major effects on caseflow management of the decision by jurisdictions to insert ADR requirements into divorce case processing?
A 75-kg trqampoline artist jumps vertically upward from the top of a platform with a speed of 5.00 m/s. (a) how fast is he going as he lands on the trampoline 3.0m below? (b) If the trampoline behaves like a spring of spring constant 5.2 x 10^4 N/..
An elevator is able to raise 9,800 N to a height of 27 m in 20 s. What is the elevator's power output
A Doppler ultrasound machine uses a probe emitting ultrasound waves at 5MHz to probe the speed of blood cells moving in an artery, What is the wavelength through the soft tissue of ultrasound produced by this machine
An object is solid throughout. When the object is completely submerged in ethyl alcohol, its apparent weight is 15.0 N. What is the volume of the object
the shear modulus of steel is 8.1x10^10N/m^2. a steel nail of radius 7.5x10^-4m projects 0.040m horizontally outward from thw wall. what is the vertical deflection of the other end of the nail
Two waves traveling on a string in the same direction both have a frequency of 125 Hz, What is the amplitude of the resultant wave if the original waves differ in phase by each of the following values
What is the magnitude of the free-fall acceleration of a ball (mass m) due to the Earth's gravity at an altitude of 3R, where R is the radius of the Earth
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