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There is an old truck that has a 6 or 12 volt battery in it which has very little charge left in it. The hood cannot be opened, so to charge the battery, someone uses 3 car batteries (12 volts each) which are placed in series. The reasoning is that if it is either a 6 volt or 12 volt battery that is in the truck, then the 3 batteries in series will certainly charge it up because there will be "extra voltage" in the circuit.
Not wanting to blow out the battery in the old truck from an over current, there is placed a resistor of 12 Ohms in series with the circuit from the 3 batteries. Judging from the heat of the resistor this person believes that 12 watts of heat is being dissipated by this resistor. Determine the old truck battery voltage.
A molecule is represented by a charge -2q at the origin and charges +q at b1 and b2, where | b1 | = | b2 | = b, Find dipole moment of the molecule
a closed circuit consists of two semicircles of radii 37 and 20 cm that are connected by straight segments. a current
An L-R-C series circuit is connected to a120?Hz ac source that has vrms = 80.0V. What average power is delivered to the circuit by the source
a 120 turn coil of radius 1.8 cm and resistance 5.3 ? is placed outside a solenoid of radius 1.6 cm. Find the magnitude and direction of the current induced in the coil
Electrons are emitted from a surface when the light of wavelength 500 nm is shone on the surface but electrons are not emitted for longer wavelengths of light. What is the work function of the surface?
Suppose the skin temperature of a naked person is 35 C when the person is standing inside a room whose temperature is 22 C. The surface area of the individual is 1.5m2.
A fireman d = 46.0 m away from a burning building directs a stream of water from a ground-level fire hose at an angle of ?i = 33.0° above the horizontal. at what height will the stream of water strike the building
a charge q= 8 uC is moving along the x axis with a velocity of v=4 x 10^4 m/s. a magnetic field of magnitude B=3T is along the y-axis. a) find the magnitude and direction of the net force acting on the charged particle.
a 30.0 g ball of clay traveling east at 7.50 ms collides and sticks together with a 30.0 g ball of clay traveling north
A 10.8 gram bullet is fired horizontally into a 100 gram wooden block initially at rest on a horizontal surface. obtain what the speed of the bullet before impact
Double slits of 0.115 mm separation are placed at the front of a lecture room that is 17.1 m long. what is the separation between the first two bright fringes
Calculate the minimum wavelength x-ray that can be produced when a target is struck by an electron that has been accelerated through a potential difference of 10.7 kV
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