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At an accident scene on a level road, investigators measure a car's skid mark to be 70 meter long. It was a rainy day and the coefficient of kinetic friction was estimated to be 0.38. Use these data to find the speed of the car when the driver slammed on (and locked) the brakes (g = 9.8 m/s2).
two semicircular rods one with a 100.0 mm radius r1 and the other with a 180.0 mm radius r2 have a common center of
A hydrogen atom is in its first excited state (n = 2). Using the Bohr theory of the atom, calculate (a) the radius of the orbit, (b) the linear momentum of the electron.
A ball hangs motionless from a ceiling by a string. How many forces are acting on the ball
The question asks to determine the mechanical energy that is lost as a result of the collision, not he kinetic energy. What is the mechanical energy that is lost
A golfer, standing on a fairway, hits a shot to a green that is elevated 6.91 m above where she is standing. find the time that the ball is in the air before it hits the green
Consider two capacitors in air each with a capacitance C, both capacitors then were filled with liquid having a dielectric constant k, What is produced heat
An electron is released from rest at a perpendicular distance of 10.8 cm from a line of charge on a very long nonconducting rod. That charge is uniformly distributed, with 8.1 μC per meter. What is the magnitude of the electron's initial acceleration..
A horizontal spring-mass system has low friction, spring stiffness 150 N/m, and mass 0.4 kg. What is the maximum speed during the motion
A 10-turn square coil of wire lies in the xy-plane. A uniform magnetic field of magnitude 2.0 T oriented in the negative z-direction, what is the magnitude of the induced emf in the coil during this time
A(n) 2925 kilogram van runs into the back of a(n) 716 kilogram compact car at rest. find what is the initial speed of the van
i am driving down the interstate at a brisk rate of 53 miles per hour. what should the radius of my tires be so the
During the spin-dry cycle of a washing machine, the motor slows from 95 rad/s to 30 rad/s while the turning the drum through an angle of 402 radians. Find the magnitude of the angular acceleration of the motor
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