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A uniform 2.8 magnetic field points to the right A 2.19 m long wire , carrying 21.8 A is placed at an angle of 23 degrees to the field. What is the magnitude of the force on the wire?
A current loop in a motor has an area of 1.21 cm^2. It carries a 172 mA current in a uniform field of 1.42T. What is the magnitude of the maximum torque on the current loop?
What is the magnitude of the first, 2nd and 3rd wire I= 5.4A, b= 3.06cm L= 32.2 cm. There is three wires label 1,2,3 and b is the distance between 1 and 2 and it is also the distance between 2 and
A current of 18.20 mA is maintained in a single circular loop with a circumference of 3.31m. A magnetic field of 0.540T is directed parallel to the plane of the loop. What is the magnitude of the
The resistance of a very fine tungsten wire with a 10 micro m x 10micro m square cross section is 2978 ohm how long is the wire? A 2978 ohm resistor is made by wrapping this wire in a spiral aroun
MOS technology is used to fabricate a capacitor, utilizing the gate metallization and the substrate as the capacitor electrodes. Find the area required per 1-pF capacitance for oxide thickness rangi
The hot dog cooker described in the chapter heats hot dog by connecting them to 91 V house hold electricity. A typical hot dog has a mass of 64g and a resistance of 149 ohm. How long will it take fo
The total charge a household battery can supply is given in units of mA*hr. for example a 11V alkaline battery is rated 760 mA*hr, meaning that such a battery could supply a 1 mA current for 760hr,
A 98.53 cm long heating wire is connected to a 138 V outlet. If the wire dissipates 79.5 W what is the current in the wire? What is the resistance of the wire?
The electric field inside a 20.91 cm long copper wire is 0.071 V/m. What is the potential difference between the ends of the wire?
When he is at the goal line and moving horizontally at 6.0 m/s, he is met in midair by an opposing 90 kg linebacker who is initially moving at 4.0 m/s in the opposite direction. The two meet in a he
The speed of sound in the room is 344 m/s, and the stone is heavy enough to prevent the lower end of the wire from moving. If the wire is vibrating in its second overtone, what is the wavelenth of t
a) If a cylindrical wire with are A has a resistance R, what would be its resistance when the area is doubled? b) If a cylindrical wire with diameter D has a resistance R, what would be its resistance
Blinking lights in a christmas tree use an RC circuit with a time constant of 5.00 seconds. If the capacitor has C=25.0microfarads, find the value of the resistor R.
The speed of sound in the rod is 16 times the speed of sound in air. A woman, at the other end with her ear close to the rod, hears the sound of the blow twice with a 0.15 s interval between; one so
Two equal resistances are connected in the gaps of a meter bridge. If the resistance in the left gap is increased by 10%, by what percent does the balance-point shift (and in which direction)
The specific heat of a substance varies with temperature according to c(T) = A + BT + CT2. Find the energy required to raise the temperature of a mass m of this substance from T1 and T2. (Use any v
If the conductor is 0.30 m long and a constant current of 7.0 mA flows through it, what force does it experience from a magnetic field that varies spatially from B = 17.0 (i.hat) T to B = 5.0 (i.hat
At a distance of 11 km, a 170 Hz horn, assumed to be a point source, is barely audible. At what distance would it begin to cause pain?
The near point of the person using the microscope is 25.5 and you can assume she can view the image produced with a fully relaxed eye. 1) What is the focal length of the objective? 2) What is the di
A baton twirler is twirling her baton in a horizontal circle at a rate of 2.33 revolutions per second. Calculate the induced EMF between the center and one end of the baton if the magnetic field of
Two long parallel wires are separated by 3.37 cm and carry currents 1.25 A and 3.43 A. Find the magnitude of the magnetic force that acts on a 3.53-m length of either wire.