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A magnetic field has a magnitude of 1.20*10-3 T, and an electric field has a magnitude of5.60*103 N/C. Both fields point in the samedirection. A positive 1.8-µC charge moves at a speed of2.80*106 m/s in a direction that isperpendicular to both fields. Determine the magnitude of the netforce that acts on the charge.
A current of 74.8 mA exists in a metal wire, In what direction do the electrons travel with respect to the current
a spring contant k=11.75 N/m is hung vertically. What is the displacement of the end of the sprig due to the weight of the 0.500kg mass
A rectangular wooden block of weight W floats with exactly one-half of its volume below the waterline. What is the density of the unknown liquid
A concave mirror has a focal length of 20 cm. What is the position (in cm) of the resulting image
A centrifuge is a common laboratory instrument that separates components of differing densities in solution. what is the magnitude of its angular deceleration
An alpha particle is moving at a speed of 5.0 × 105 m/s in a direction perpendicular to a uniform magnetic field of strength 0.040 T. What is the radius of the path of the alpha particle
A 2.10 kg mass attached to a spring oscillates with a period of 0.375 s and an amplitude of 20.5 cm. Find the total mechanical energy of the system
A flywheel for energy storage in a hybrid gasoline-electric car is a ring-shaped rotor of mass 49 kg, designed to rotate at 30000 rpm. how long will it take for its stored energy to be exhausted
Multiple-Concept Example 6 reveiws the principles that play a role in this problem. what is the change in the mass of the nuclear fuel due to the energy being taken from the reactor
A 100-W resistance heater is connected to a 110-V doc source. What current flows through the heater
A 731 kg car moving at 29 m/s brakes to a stop. The brakes contain about 13 kg of iron that absorb the energy. What is increase in temperature of the brakes
An electric trimmer blade has rotational inertia 2.00×10?4kg?m2. How much work was done to accelerate the blade
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