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Suppose you install a compass on the center of a car's dashboard.
(a) Assuming the dashboard is made mostly of plastic, compute an order-of-magnitude estimate for the magnetic field at this location produced by the current when you switch on the car's headlights. (Suppose you have two 104-W headlights running in series from a 12-V battery with all the current going through the switch 62 cm from the compass. Model the current as being from a long straight wire.)
(b) How does this estimate compare with the Earth's magnetic field?
Explain how does that compare with the heat needed to reaise the temp of the same mass of water through the same temp difference?
A large turntable rotates about a fixed vertical axis, making onerevolution in 6.00 s. The momentof inertia of the turntable about this axis is 1200 kg · m2. A child of mass31.0 kg, initially standing atthe center of the turntable, runs out along ..
A car is driven east for a distance of 47 km, then north for 25 km, and then in a direction 29° east of north for 29 km. find (a) magnitude (in km) of car's total displacement from its starting point and (b) the angle (from east) of the car's total..
Consider a hypothetical universe in which the electron hasspin 3/2 rather than spin 1/2. Draw n enegy level diagram for the n=3 states of hydrogen,neglecting fine structure and hyperfine strucure. Label the states by the appropriate quantum nubers..
When you are lying horizontally, these muscles make an angle of approximately 5.00 with the femur, and if you raise your legs, With his leg raised to 60.0, find the tension in the abdominal muscle on each leg
A 0.140-kg baseball is dropped and reaches a speed of 1.20 m/s just before it hits the ground and bounces. What is the change of the ball's momentum during the bounce
how much work is required to turn an electric dipole 180deg in a uniform electric field of magnitude e 41.0 nc if p
A car travels at a speed of 24 m/s around a curve of radius 57 m. The acceleration of gravity is 9.8 m/s^2 . What is the net centripetal force needed to keep the car from skidding sideways?
The blades of a fan running at low speed turn at 260rpm . When the fan is switched to high speed, the rotation rate increases uniformly to 360rpm in 5.65s.
A block with a mass of 0.800 kg is connected to a spring, displaced in the positive direction a distance of 50.0 cm from the equilibrium, what is the block's period of oscillation
a village maintains a large tank with an open top containing water for emergencies. the water can drainnbspfrom the
A resonant circuit in a radio receiver is tuned to a certain station when the inductor has a value of 0.295 mH and the capacitor has a value of 25.7 pF. Calculate the frequency of the radio station
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