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A uniform magnetic field is normal to the plane of a circular loop 10 cm in diameter made of copper wire (diameter 2.5 mm). At what rate must the magnetic field change with the time if an induced current of 10 A is to appear in the loop? The resistivity of copper is 1.7x10-8?m.
In the amusement park ride known as Magic Mountain Superman, powerful magnets accelerate a car and its riders from rest to 45.9 m/s in a time of 8.93 s. Find the average net force exerted on the car and riders by the magnets
a thin lens of focal length 30.0 cm and is used to form an image that is twice the size of the object. Find the object position
The maximum speed of a 2.6-kg mass attached to a spring is 0.74 m/s, and the maximum force exerted on the mass is 11 N. What is the force constant of the spring
A rectangular loop of wire of dimensions 12 cm × 25 cm faces a long straight wire. The two long sides of the loop are parallel to the wire, What translational force does the straight wire exert on the loop
A boy pulls with a force of 20 N on the 300 N wagon. What acceleration does the wagon have
The spring is compressed against the floor a distance 2.5 cm and released. If the spring constant is 119 N/m, illustrate what is the magnitude of the spring force acting on the toy at the moment it is released?
A nail projects 25.0 mm horizontally outward from a wall. A 400 N picture is hung from the end of the nail, what is the diameter of the nail
A log of mass 40 kg is dropped into river at 0°C. If the relative density of the log is 0.8, what will be the volume of the log above the surface
A car at the Indianapolis-500 accelerates uniformly from the pit area, going from rest to 285 km/h in a semicircular arc with a radius of 190 m. Determine the tangential acceleration of the car
A spider hangs from a strand of silk whose radius is 4.0*10^-6m. Thedensity of the silk is 1300kg/m^3. determined the mass of the spider
The figure below shows a conducting rod sliding along a pair of conducting rails. The conducting rails have an angle of inclination of theta= 39.0 degrees. What is the rod's terminal speed?
The drive propeller of a ship starts from rest and accelerates at 2.70 x 10-3 rad/s2 for 3.10 x 103 s. For the next 1.30 x 103 s the propeller rotates at a constant angular speed. Find the total angular displacement of the propeller
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