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On wet pavement, the coefficient of kinetic friction may be only 0.25. How fast should you drive on wet pavement in order to be able to stop in the same distance as in part A? (Note: Locking the brakes is not the safest way to stop.)
A jet airplane is in level flight. The mass of the airplane is m = 8950 kg. What is the magnitude of the lift force acting on the plane
A cylindrical section of a tree trunk 50 cm in diameter and 75 cm long is seen rolling down a road below a sawmill at a speed of 12 m/s. at least how far up the road is the sawmill
A half-Atwood machine consists of a block of mass 4.0 kg on a table, connected by a string that passes over a pulley to a hanging mass of 5.0 kg. how fast is it moving after the hanging block has fallen 2.0m
A scientist notices that an oil slick floating on water when viewed from above has many different rainbow colors reflecting off the surface. What is the minimum thickness t of the oil slick at that spot
Draw a free body diagram for each situation and find the magnitude of the larger of the two individual forces in units of N. Find out the magnitude of the smaller of the individual forces in units of N.
A certain atom of has 89 protons. Assume that the nucleus is a sphere with radius 7.25 fm, find the magnitude of the electric field produced by the protons
A solid circular disk has a mass of 1.2 kg and a radius of 0.12 m. Each of three identical thin rods has a mass of 0.16 kg. Find the moment of inertia of the stool
A bicyclist starts from rest at the top of a hill and rolls down the hill without pedaling. what is the bicyclist's speed at the bottom of the hill
In a vacuum, two particles have charges of q1 and q2, where q1 = +3.66 ?C. They are separated by a distance of 0.213 m,
An air puck of mass m1 = 0.32 kg is tied to a string and allowed to revolve in a circle of radius R = 1.1 m on a frictionless horizontal table. What is the horizontal force acting on the puck
A spring of spring constant k=12.50 N/m is hung vertically. A 0.5000 kg mass is then suspended from the spring. What is the displacement of the end of the spring
q1. a weather vane at first at rest has a moment of inertia of 0.111 kg bull m2 about its axis of rotation. a 53.0 g
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