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A wire has a length of 7.05 × 10-2 m and is used to make a circular coil of one turn. There is a current of 5.47 A in the wire. In the presence of a 2.74-T magnetic field, what is the maximum
The vertical magnetic field has a magnitude of 0.052 T. The 0.17-kg aluminum rod (length = 1.6 m) slides without friction down the rails at a constant velocity. How much current flows through the ro
(a) What must be the direction of the current in the copper rod that causes the springs to stretch? (b) If the current is 14 A, by how much does each spring stretch?
(a) Find the magnitude of the magnetic force exerted on each side of the triangle. (b) Determine the magnitude of the net force exerted on the triangle.
When the wire is horizontal, it experiences no magnetic force. When the wire is tilted upward at an angle of 27°, it experiences a magnetic force of 2.5 × 10-3 N. Determine the magnitude o
Two blocks are attached by a massless rope over a frictionless pulley, and block M1 slides on the table without friction. The masses of the blocks are: M1 = 7.50kg and M2 = 4.30kg. Calculate the ten
An arch of 120 degrees carries a total charge of Q. The radius of the arch is R (ignore the thickness of the wire). What is the magnitude of the electric field at the center? The "center" is the sa
If it takes 25.0 J to increase the temperature of n moles of ideal He at fixed volume from 15.0 C to 85.0 C, the heat required to increase the temperature of n moles of ideal H2 at fixed volume by t
A proton starting from rest travels through a potential of 1.0 kV and then moves into a uniform 0.040-T magnetic field. What is the radius of the proton's resulting orbit? (mproton = 1.67 × 10
Three charges are located at the corners of a square of side a. The charge +q is located at the origin while charges -q are located at (a,0,0) and (0,a,0). How much energy is stored in the whole co
Calculate the force that must be applied by this arm to hold a package on the ramp. The ramp is at an angle of 31.5 degrees with the horizontal.
A 320-kg car is moving at 25.0 m/s. Suddenly after the breaks are hit to lock the wheels, it comes to a screeching stop in an 8.0-m distance. A.) Calculate the change in kinetic energy of the car wh
The dome of a Van de Graaff generator receives a charge of 2. 10^-4 C. Find the strength of the electric field in the following situations.
Now a pin A is inserted to hold the block in place in the barrel and the device is turned into a horizontal position. When a is pulled up, calculate the speed of the block as it comes out of the bar
The magnetism of the Earth acts approximately as if it originates from a huge bar magnet within the Earth. Which of the following statements is true?
what is the mass of the water that must pass through the turbine each second to supply this power? Answer in units of kg/s
A tropical fish aquarium has thick transparent windows made of a material whose refractive index is 1.742. What percentage of the light incident on this window at normal incidence is transmitted?
A 3.5-kg block and a 1.9-kg block connected by a string that passes over a small pulley hang vertically. Calculate the tension in the string and the acceleration of the two blocks.
What would be the sign (positive/negative) of the shaft work for a compressor? Give an explanation for your answer.
Neglecting the radiation heat exchange between the air in the room and the man's body, calculate the maximum temperature in °C to which these walls can be set so that the body temperature of the
The solenoid has 1250 turns per meter and a diameter of 5.85 cm , and carries a current of 2.15 A. Find the magnetic flux through the loop when L = 5.85cm. Find the magnetic flux through the loop wh
For an RLC circuit with a resistance of 13.0 k? a capacitance of 7.0 µF, and an inductance of 35.0 H. What frequency is needed to minimize the impedance?
Draw a schematic of the turbine as a control volume, label all the mass interactions with the surroundings and calculate the net rate of flow work for this turbine. The turbine functions as a steady
The air then expands at constant temperature to a pressure of 0.4 MPa. Assume the process occurs slowly enough that the acceleration of the piston can be neglected. The ambient pressure is 101.325
Which mode of heat transfer out of conduction, convection and radiation is principally at work in the following situations? A) You touch a hot stove and your hand gets burnt.