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What is the magnitude of the magnetic force per unit length caused by wire 1 on wire 2? What is the direction of the magnetic force caused by wire 1 on wire 2?
An AC generator consists of 100 turns of wire of area 0.090 m2 and total resistance 12. The loops rotate in a magnetic field of 0.50 T at a constant angular speed of 60 revolutions per second. Find
A radio antenna radiates 9.73 W of power at 248 Hz. How many photons per second are emitted by the antenna? Planck's constant is 6.63*10^-34 J*s. Answer in units of photons/s.
A potential difference of 3.00 V will be applied to a 45.00 m length of 18-gauge silver wire (diameter = 0.0400 in). a) Calculate the current. b) Calculate the magnitude of the current density.
If a horizontal force of magnitude P= 5.0 N is applied to the block as shown and the resulting acceleration of the block is measured to be 0.75m/s^2, what is the rotational inertia of the wheel?
A disk rotates at constant angular acceleration, from angular position θ1 = 10.0 rad to angular position θ2 = 69.0 rad in 6.10 s. Its angular velocity at θ2 is 15.0 rad/s. a) What
A horizontal force of 5.0 N accelerates a 4.0 kg mass, from rest, at a rate of 0.50 m/s2 in the positive direction. What friction force acts on the mass?
An electronic device requires a power of 13 W when connected to a 21.0 V battery. How much power is delivered to the device if it is connected to a 17.0 V battery? (Neglect the resistances of the ba
While taking photographs in Death Valley on a day when the temperature is 52.0°C, Bill Hiker finds that a certain voltage applied to a tungsten wire produces a current of 1.000 A.
A 4.00 mF and a 6.00 mF are connected in series and this combination is connected across a 42.0 V potential difference. Part A: calculate the charge on the first capacitor
The plates of a parallel-plate capacitor are 3.50mm apart, and each carries a charge of magnitude 79.0mC. The Plates are in vacuum. The electric Field between the plates has a magnitude of 5.00*10^
When the canoe is at rest in the placid water, they exchange seats, which are 3.0 m apart and symmetrically located with respect to the canoe's center. If the canoe moves 40 cm horizontally relative
A 17.0 k resistor and a capacitor are connected in series and then a 11.0 V potential difference is suddenly applied across them. The potential difference across the capacitor rises to 9.00 V in 1.
Suppose you are an astronaut in deep space, far from any source of gravity. You have two objects that look identical, but one has a large mass and the other a small mass. How can you tell the differ
A 25.0-g ice cube is set sliding around the cone without friction in a horizontal circle of radius R.
According to the first law of thermodynamics, if work is done on a system, then (a) the internal energy of the system must change, (b) heat must be transferred from the system, (c) the internal ener
A 4.00-uF capacitor has been charged by a 9.00-volt battery. How many electrons must be moved from the negative plate to the positive plate of the capacitor to reverse the electric field inside the
A solenoid turns at 4457 rotation per meter and has a radius of 7 cm. the magnetic field inside has a magnitude of .64 T. What is the current in the solenoid?
A 1.29-m long ladder weighing 200N rests against a vertical wall so that the top of the ladder is at a height of .590 m. a 603-N man stands on the ladder at a distance of .390 m along the ladder. Ca
On an essentially frictionless, horizontal ice rink, a skater moving at 6.0 m/s encounters a rough patch that reduces her speed by 42% due to a friction force that is 27% of her weight. Use the wor
If the inner and outer conductors carry equal currents I in opposite directions, use Ampère's law to derive an expression for the magnetic field as a function of r (the distance from the cent
Find the force needed to pull a mass of 30 kg at constant velocity on a rough incline making an angle of 40 degrees with horizontal and with kinetic friction of 0.3?
One of the mirrors in a Michelson interferometer is moved a distance of 2.0 mm. Meanwhile, the interference intensity moves through 5735 dark fringes. What is the wavelength of the light?
What area must a heating duct have if air moving at 3.00 m/s along it can replenish the air every 15 minutes in a room of volume of 300 m cubed? Assume the density remains constant.
A fisherman's scale stretches 3.6 cm when a 2.7kg fish hangs from it. A) what is the spring stiffness constant and B) what will be the amplitude and frequency of vibration if the fish is pulled down