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Question1
A bicycle wheel is rotating at 43 rpm while the cyclist begins to pedal harder, giving the wheel a constant angular acceleration of 0.45 rad/s^2 for 10s.
How many revolutions does wheel make throughout this time?
Question2
Two cars travel westward along a straight highway, one at a constant velocity of 64 km/h, and the other at a constant velocity of 108 km/h.
(a) assume that both cars start at the same point, how much sooner does the faster car arrive at a destination 8 km away
(b) How far have to the cars travel for the faster car to arrive 10 min before slower car?
You are pushing a 150-kg wooden crate in a straight line a distance of 4.5 m across a wooden floor. What is the work done by friction on the crate
A certain lightbulb is rated at 60.0 W when operating at an rms voltage of 120 V. What is the peak voltage applied across the bulb
A square loop of wire has sides of length 3 cm. A magnetic field points out of the screen; its magnitude is B = 3.0t2y, What is the emf around the square at t = 2.00 s
Two balls of the same mass areaccelerated by the different net forces such that one ball gains avelocity twice that of the other ball in the process.
Note down that since each oscillator is attached to two "springs", and each "spring" is half the length of the interatomic bond, the effective interatomic spring stiffness for one of these oscillators is times estimated value given above.
A Carnot engine absorbs 950J of heat each cycle and provides 340J of work. How much heat is rejected each cycle
a 325kg object, initially moving at 7.50 m/s, to a final velocity of 28.5 m/s in 16.5 seconds. What was the change in kinetic energy of the object
A sotne of mass 0.3 kg tied to the end of string in ahorizontal plane in whriled round in a acircle of radius 1m, What is the tension in the string? What is the max speed with which the stone can be whriled around
How much heat would flow by the glass in 1.00 h if there is a temperature difference of 3^circ {rm C} between the inner and outer surfaces.
A large tanker truck can carry 30 ton of liquid. (a) What volume of water can it carry? (b) What volume of gasoline can it carry.
a 50 kg trunk is pushed 6 m along a level floor at a constant speed of 4.2m/s.if the coefficient of friction is 0.20, calculate the work done by the applied force
An MP3 player operates with a voltage of 3.7 V, and is using 0.28 W of power. Find the current being supplied by the player's battery
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