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A battery with an emfof 9.00 V has an internal resistance r. When connected to aresistor R, the terminal voltage is 8.80 V and the current is 0.11A. When a second identical battery is added in series and the externalresistor is R = 15 Ohms what is the resulting current?
An infinitely long cylinder, radius a, carries a current I, distributed uniformly over its cross-sectional area. The axis of the cylinder coincides with the z-axis.
A mass of 0.14kg on the end of a spring oscillates with a period of 0.45 s and an amplitude of 0.15 m. Find the equation describing the motion of the mass
A 260 g block is dropped onto arelaxed vertical spring that has a spring constant of k =2.5 N/cm. The block becomes attachedto the spring and compresses the spring 11 cm before momentarily stopping.
A hockey player is standing on his skates on a frozen pond when an opposing player, moving with a uniform speed of 15 m/s, skates by with the puck, How long does it take him to catch his opponent
a radio controlled car transmitter produces a 240 milliwatt signal. the car will work if the received signal is at
q1. a race car has the mass of 702 kg. it starts from rest and travels 45.0 m in 3.0 s. the car is uniformly
The circuit shown in the drawing is constructed with six identical resistors and an ideal battery. When the resistor R4 is removed from the circuit, Determine the resistance of each resistor
A parallel-plate capacitor has circulat plates of 7.00 cm radius and 1.01 mm separation. Calculate the capacitance in picofarads
a "wien" velocity filter uses an electric field and a magnetic field that are at right angles to each other. what is the energy of the proton beam
In the electron gun pictured, a potential differenceof 10.9 kV is found to bringelectrons from rest at the cathode to 6.2 x 107 m/sat the anode. If the electrons reach the anode with a speedof 2.9 x 107 m/s,what is the potential difference between th..
Three equal positive point charges of magnitude Q = 12.00%u03BC C are located at three corners of a square of edge length d = 11.1 cm. What is the magnitude of the attractive force on the negative charge
A force of 29.73 N is applied tangentially to a wheel of radius 0.34 m. This force causes an angular acceleration of 1.20 rad/s2. What is the rotational inertia of the wheel
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