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A Hall-effect probe operates with a 120 -mA current. When the probeis placed in a uniform magnetic field of magnitude 0.0900 T, itproduces a Hall voltage of 0.760 µV. The thickness of the probe in the direction of B is 2.00 mm. What is the density of the charge carriers, each of which has charge of magnitude e.
a 2.0 kg object is dropped from a 4.0 meter height. Calculate the speed of the ball prior to striking the ground
How many 104W lightbulbs can you use in a 113 V circuit without tripping a 17 A circuit breaker? (The bulbs are connected in parallel that means that the potential difference across each lightbulb is 113V.)
The windings of a motor have a resistance of 4.0 O. The counter emf of this motor when connected to a 120-V line and running at full speed is 104 V. What is the start up current of this motor
In a football game a kicker attempts a field goal. The ball remains in contact with the kicker's foot for 0.0682 s, determine the vertical components of the launch velocity.
A falling sphere viscometer measures the viscosity of a liquid from the terminal velocity of a tiny, falling sphere, what is the shear viscosity of the liquid
a coil whose resistance is 60 ohms and one whose resistance is 40 ohms are connected in parallel to a 120-V line. what is the current in each coil
A submarine is 300. m horizontally out from the shore and 100m. beneath the surface of the water. How long does it take for the laser bream to reach the building
A 4kg cart is initially moving at 3m/s on a frictionless track. It then hits an incline and stops 2m later. what is the net work done on the cart
A spring stretches by 0.0241 m when a 4.15-kg object is suspended from its end. How much mass should be attached to this spring so that its frequency of vibration is f = 4.44 Hz
vector a has a magnitude of 55.7 m and points in a direction 19.3 degrees below the positive x axis. a second vector b
A large mirror is hung from a nail. The supporting steel wire has a diameter of 0.20 mm, What is the distance between the nail and the top of the frame when the mirror is hung
Find the final velocity of the two balls if the ball with velocity v2i = -21.2 cm/s has a mass equal to half that of the ball with initial velocity v1i = +27.6 cm/s
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