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If the coefficient of static friction between tires and pavement is 0.55, calculate the minimum torque that must be applied to the 70 cm-diameter tire of a 980 kg automobile in order to "lay rubber" (make the wheels spin, slipping as the car accelerates). Assume each wheel supports an equal share of the weight.
You are on a boat in a fog and know there are cliffs ahead of you somewhere, but you cannot see them. How far away are the cliffs
Consider an old-fashion bicycle with a small wheel of radius 0.25 m and a large wheel of radius 0.86 m. Find the total distance traveled by the rider
A hockey puck is hit on a frozen lake and starts moving with a speed of 13.2 m/s. Five seconds later, its speed is 6.10 m/s. How far does the puck travel during the 5.00 s interval
The normal boiling point of ammonia is -33.33 C. The boiling point of ammonia under 23.74 psi is -23.33 C. Suppose the pressure on the liquid ammonia at -23.33 C is suddenly dropped from 23.74 psi to 14.71 psi (1 atmosphere).
A bicycle wheel has a diameter of 64.1 cm and a mass of 1.81 kg. suppose that the wheel is a hoop with all of the mass concentrated on the outside radius. The bicycle is placed on a stationary stand and a resistive force of 120 N is applied tangent..
If a horse starts from rest and accelerates at the maximum value until reaching its top speed, how far does it run, to the nearest 10 {\rm m}
A laser emits a narrow beam of light. The radius of the beam is 1.5 mm, and the power is 2.9 mW. What is the intensity of the laser beam
A hardworking ant must supply 0.00655 N to pull a small piece of fruit at constant velocity over a distance of 8.00 cm up a small hill to the entrance of the colony. Use the work-energy theorem to calculate the mass of the piece of fruit in grams
A certain waffle iron is rated at1.03kW when connected to a 120-V source. What current does the waffle iron carry?
A generator is designed to produce a maximum emf of 150 V while rotating with an angular speed of 3600 rpm. how many turns of wire are needed
two charges are placed between the plates of a parallel plate capacitor. one charge is q1 and the other is q2 4.66c.
the parallel-plate capacitor used on each key of a computer keypad is a square 0.5 cm on a side. between the plates is
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