Find the work done by the dogs
over a horizontal surface at a constant speed. The coefficient of friction between the sled and the snow is 0.236.The acceleration of gravity is 9.8 m/s2 . Find the work done by the dogs.
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A circular loop in the plane of the screen lies in a 0.87 T magnetic field pointing into the screen. If the loop's diameter changes from 19.5 cm to 6.0 cm in 0.50 s, determine the following.
What is the magnitude of the electric field at P1? Hint: The direction of the dipole vector ˆp is from the negative charge to the positive charge. Answer in units of N/C.
You know that if you plug in too many appliances you will overload the circuit breaker. The toaster label says that its power output is 700 watts.
A woman of mass m =82 kg rides in a elevator of mass M = 4078 kg. The elevator is pulled by a cable, and the woman is standing on a scale (of negligible mass).
A force of 12.7 N acts horizontally on a 21.7-kg mass that is at rest on a smooth table. Find acceleration
A mass of 1.70 kg stretches a vertical spring 0.315 m. If the spring is stretched an additional 0.134 m and released, how long does it take to reach the (new) equilibrium position again?
An electronic device requires a power of 16 W when connected to a 15.0 V battery. How much power is delivered to the device if it is connected to a 11.0 V battery? (Neglect the resistances of the batteries and assume the resistance of the device
At t = 0, a 726g mass at rest on the end of a horizontal spring (k = 115N/m) is struck by a hammer, which gives it an initial speed of 2.58m/s. Determine the period of the motion.
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