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An electron moves with a velocity of (4*10^6 m/s, 90degrees) through a magnetic field of (0.50 T, 220degrees). What is the magnetic force acting on it?
A force vector has a magnitude of 579 newtons and points at an angle 41 Degrees of below the positive x axis. What are (a) the x scalar component and (b) the y scalar component of the vector
Suppose a cube of aluminum which is 1.00 cm on a side accumulates a net charge of +3.10 pC. (a) What percentage of the electrons originally in the cube was removed.
A fire engine moving to the right at 40 m/s sound its horn (frequency = 500 Hz) at the two vehicles shown in the figure. The car is moving to the right at 30 m/s, while the van is at rest. (a) What frequency is heard by the passenger in the car?
A 50.g dart rests up against a spring that has been compressed 0.050 meters. If the dart were fired vertically, what height would it reach
Two wires are identical, except that one is aluminum and one is nichrome. The aluminum wire has a resistance of 0.21 ?. What is the resistance of the nichrome wire
A generator has a square coil consisting of 187 turns. The coil rotates at 83.4 rad/s in a 0.202-T magnetic field. What is the length of one side of the coil
A double-slit experiment is set up using red light (l = 714 nm). A first order bright fringe is seen at a given location on a screen. What wavelength of visible light (between 380 nm and 750 nm) would generate a dark fringe at the identical locati..
A helicopter lifts a 70 kg astronaut 16 m vertically from the ocean by means of a cable. The acceleration of the astronaut is g/10. How much work is done on the astronaut by her weight? What is the speed of the astronaut just before she reaches the ..
A particular spring has a force constant of 2.8×103N/m, How much work is done in stretching the relaxed spring by 7.0cm
A massless spring of constant k = 1000 N/m is fixed on the right side of a level track. A block of mass m = 1.50 kg is pressed against the spring, compressing it a distance d =20.0 cm. The block (initially at rest) is then released and travels tow..
A car of mass M = 1200 kg traveling at 45.0 km/hour enters a banked turn covered with ice. The road is banked at an angle theta, and there is no friction between the road and the car's tires.
A 5.0V potential difference is applied between the ends of a 0.80mm -diameter, 90cm -long nichrome wire, What is the current in the wire
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