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An electron with a speed of 6.00 × 10^5 m/s enters a uniform magnetic field of 0.0600 T at an angle of 61.4° to the magnetic field lines. The electron will travel in a helical path. Find the radius of the helical path.
A force with a magnitude of 25 N and directed at an angle of 37° above the horizontal is used to move a 10-kg crate along a horizontal surface at constant velocity
A circular coil 17.0cm in diameter and containing nine loops lies flat on the ground. The Earth's magnetic field at this location has magnitude 5.50×10?5T, Determine the torque on the coil
Unpolarized light is incident on a system of three polarizers. The second polarizer is oriented at an angle of 30 degrees with repect to the first, what is the intensity of the incident light
A small steel ball with a mass of 80 g is releasesd from a resting height of 1.25 m above a ridgid metal plate. What is the velocity of ball before impact.
A coil of 15 turns and radius 10.0 cm surrounds a long solenoid of radius 2.00 cm and 1000 turns/meter. The current in the solenoid changes as I = (5.00 A) sin(120t). Find the induced emf in the 15-turn coil as a function of time.
To practice Problem-Solving Strategy 5.2 Dynamics problems. A 30.0kg- box is being pulled across a carpeted floor by a horizontal force of 230N, What is the acceleration of the box
A heater coil connected to a 240 Vrms ac line has a resistance of 34 Ohms. find min values of the instantaneous power
A string fixed at both ends is vibrating in its 8th harmonic. How many nodes are on the string
It takes a minimum distance of 48.96 m to stop a car moving at 12.0 m/s by applying the brakes (without locking the wheels). Assume that the same frictional forces apply and find the minimum stopping distance when the car is moving at 26.0 m/s.
A step-up transformer has 24 turns on the primary coil and 780 turns on the secondary coil. what input current and voltage are needed
A grating with 633 slits/cm is illuminated with light of wavelength 419 nm. What is the highest-order number that might be observed with this grating.
Calculate the buoyant force of water on a completely submerged sample volume of 3.4 meter^3.
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