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How do paramagnetic materials differ from diamagnetic materials?
a) They are the same.
b) Paramagnetic molecules have a permanent dipole moment.
c) Paramagnetic molecules don't have a permanent dipole moment.
d) Paramagnetic molecules are metallic.
e) Paramagnetic molecules are non-metallic.
Two capacitors, C1 = 19.0 µF and C2 = 30.0 µF, are connected in series, and a 3.0 V battery is connected across them. Find the equivalent capacitance, and the energy contained in this equivalent capacitor.
One can not align the apparatus to eliminate entirely the effects of the Earth's magnetic field. calculate the component of the earth magnetic field perpendicular to the entering electron beam
Red light of wavelength 633nm from a helium-neon laser passes through a slit 0.370mm wide. What is the width of the central bright fringe
A merry-go-round is a common piece of playground equipment. A 3.0-m-diameter merry-go-round with a mass of 230kg is spinning at 17rpm, What is the merry-go-round's angular velocity, in rpm, after John jumps on
A 58.0 kg crate rests on a level floor at a shipping dock. The coefficients of static and kinetic friction are 0.700 and 0.480, respectively. What horizontal pushing force is required to just start the crate moving
At a stop light, a truck of mass, mT = 1.10 x 10^4 kg, fails to hit its brakes until it has hit a car of mass,mC = 1.60 x 10^3 kg. Determine the velocity of the combined truck and car immediately after the collision
A turntable must spin at 33.7 rpm (3.53 rad/s) to play an old-fashioned vinyl record. How much torque must the motor deliver if the turntable is to reach its final angular speed in 3.0 revolutions, starting from rest? The turntable is a uniform disk ..
Waves from a radio station have a wavelength of 308 m. They travel by two paths to a home receiver 77.0 km from the transmitter. What is the minimum distance from the mountain to the receiver
300. V are applied to a motor with a windings resistance of 65.0 ohms. At the maximum motor speed the back emf is 155. V. Find the current in windings as the motor starts
A 140 ? lamp, a 25 ? electric heater, and a 57 ? fan are connected in parallel across a 137 V line. What is the current of the lamp
Light from a sodium lamp with a wavelength in a vacuum of 590 nm enters diamond in which the speed of light is 1.24 108 m/s. What is the wavelength of this light in diamond
The first active volcano observed outside the Earth was discovered in 1979 on Io, one of the moons of Jupiter. Assume a volcano on another moon is observed to be ejecting material to a height of about 2.19 x10^5 m.
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