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Calculate the number of revolutions of the rotor required to turn the probe through 70° about its axis.
It is to have a diameter of 4.80cm and is to be designed so that flipping it 180 degrees in a field of 0.160T causes a maximum total charge of 0.350mC to flow through a charge-measuring instrument
A crate with a mass of 52.1 kg rests on the floor. The coefficient of static friction between the crate and the floor is s = 0.616, and the coefficient of kinetic friction is k = 0.209. What is the
For comparison, determine the weight of a jetliner whose mass is 1.50x10^5 kg.
A gallon of gasoline releases about 2.0*10^8 J of energy when it is burned. How many gallons of gas must be burned to release the same amount of energy as is released when 0.6 lb of235 (A) 92(Z) U u
In your testimony in court, will you say that the driver was obeying the posted speed limit?
A current I =15 A is directed along the positive x-axis and perpendicular to a magnetic field. A magnetic force per unit length of 0.12 N/m acts on the conductor in the negative y -direction. Calcul
A 66.0g hollow copper cylinder is 10.0cm long and has an inner diameter of 1.0cm.The current density along the length of the cylinder is 1.40*10^5 A/m^2. what is the current in the cylinder?
How high a tree would a 77.0 kg person have to climb to increase his gravitational potential energy relative to the ground by that amount?
When roads are icy, wet, or snowy, front-wheel drive cars (cars whose front wheels provide the force to accelerate the car forward) are generally more stable than rear-wheel drive cars (cars whose b
A uniform meter stick of mass M is pivoted on a hinge at one end and held horizontal by a spring (with spring constant k) attached at the other end. If the stick oscillates up and down slightly, wha
You may have measured the properties of a simple spring-mass system in the lab. Suppose you found ks = 0.8 N/m and m = 0.04 kg, and you observed an oscillation with an amplitude of 0.5 m.
A wire coil of negligible resistance has 1000 turns and has a diameter of 6.00 cm. A 1.00 kO resistor is connected to the coil. A uniform, time-varying magnetic field exists inside the coil, and is
A 10-cm-long thin glass rod is uniformly charged to +50 nC. A small plastic bead, charged to - 5.1 nC , is 4.0 cm from the center of the rod. What is the magnitude of the force on the bead? What is
Assume that friction can be neglected and that the resulting oscillatory motion is simple harmonic motion. (a) What is the angular frequency of the motion?
The mass travels downward 25.3cm before stopping and returning. A) Determine the spring constant. B) What is its speed after it falls 5.00cm? What is the acceleration of the mass at the very bottom
A 26 cm long solenoid consists of 5800 turns of wire wound uniformly. What current is needed to produce an 8.0 mT magnetic field inside the solenoid?
A particle, starting from point A in the drawing at a height h0 = 3.1 m, is projected down the curved runway. Upon leaving the runway at point B, the particle is traveling straight upward and reache
A skateboarder moving at v = 5.4 m/s along a horizontal section of a track that is slanted upward by 48° above the horizontal at its end, which is h = 0.50 m above the ground. When she leaves th
Suppose a technician holds his hand near the device so that the axis of his 2.0-cm-diameter wedding band is parallel to the field. What emf is induced in the ring as the field changes?
calculate (a) the angular acceleration of the pottery wheel ,and (b) the time it takes the potter wheel to reach its required speed of 65 rpm
A long straight wire is held fixed in a horizontal position. A second parallel wire is 2.0 mm below the first but is free to fall under its own weight. The second wire is copper (density 8920 kg/m^
An uncharged capacitor and a resistor are connected in series to a source of emf. If = 10.0 V, C = 19.0 µF, and R = 100 O, find the following. (a) the time constant of the circuit (b) the maxi
A long straight wire with diameter d = 0.500 mm carries a current of 5.00 A. What is the magnitude of the magnetic field due to that current at a point a) 0.500 mm from the center line of the wire b
A man drags a 141 lb crate across a floor by pulling on a rope inclined at 21.0 degrees with the horizontal. If the coefficient of static friction is 0.520, and the coefficient of kinetic friction i