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As a bar magnet moves toward a 150-turn coil, the magnetic field (which is perpendicular to the plane of the coil) changes from 0.25 T to 0.53 T in 0.3 s. If the radius of the coil is 0.12 m and the resistance of the wire is 7.9 ohms, what is the magnitude of the induced current in the coil?
Explain by how much horizontal force F must a sprinter of mass 62.0 kg exert on the starting blocks to produce this acceleration?
In a test laboratory, an electric engine is used to accelerate a wheel from rest. what is the average power output of the engine
A snowmobile climbs a hill at 15 mi/hr. The hill has a grade of 1 ft rise for every 40 ft. How fast will the snowmobile move downhill
A rod of length l and uniform mass m is hinged at its lower end while it was held at rest in a vertical position. What is the angular acceleration of the rod during the fall for a given theta
A record with a 10 cm radius and 200 g mass is dropped vertically onto a freely rotating turntable (meaning the turntable is not being driven by a motor).
An object is placed 12.0 cm in front of a converging lens of focal length 5cm. A concave mirror with radius of curvature 20.00 cm is located 30.00 cm in back of the lens. (Refer to attached picture)
A circular coil of 144 turns has a radius of 1.54 cm. Find the maximum magnitude of the torque that the coil, carrying this current, can experience in a uniform 37.0 mT magnetic field
The surfer in the photo is catching a wave. Suppose she starts at the top of the wave with a speed of 1.50 m/s, how much work is done by the (non-conservative) force of the wave
The force of attraction between a -20.0 ?C and +80.0 ?C charge is 4.00 N, What is the separation between these two charges
A spherical conductor is charged so that its surface potential is Vo=1000V. If the radius of the sphere is R=10m, what is the potential in the center of the sphere
How far does the car go before it stops. An advertisement claims that a sportscar can accelerate from rest to 100 km/hr in 7.70 s.
When two point charges are a distance R apart, their potential energy is -2.00 .How far (in terms of R) should they be from each other so that their potential energy is -6.00.
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