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A cube of ice is taken from the freezer at -7.9°C and placed in a97g aluminum calorimeter filled with322g of water at room temperature of 20°C. The final situation is observed to be all water at18°C. What was the mass of the ice cube?
g
A tank circuit in a radio transmitter is a series RCL circuit connected to an antenna. The antenna broadcasts radio signals at the resonant frequency of the tank circuit. determine the maximum inductance of the tank circuit
q1. how did pavlov and watsons focus on scientific inquiry of behaviours differ from earlier viewpoints of
q1. a car carrying a 75 kg test dummy crashes into a wall at 31 ms and is brought to rest in 0.10 s. find the average
a 500 omh resistor and a real inductor with a pure inductance L and an internal resistance of r are in series with a generator with a voltage of V = 10.0V, What are the values of L and r
A boy standing on top of a building throws a small ball from a height of H1 = 24.2 m. calculate for how long the ball is in the air
A jet is circling an airport control tower at a distance of 16km. An observer in the tower watches the jet cross in front of the moon. As seen from the tower, the moon subtends an angle of 9.50x10-3 radians. Find out the distance traveled (in mete..
Students hypothesized that by running the electric current through the wire of the apparatus shown here, they could cause the non-magnetic nail to exhibit magnetic properties. What would be a reasonable way to test this.
A rotating wheel requires 3.03-s to rotate through 37.0 revolutions. Its angular speed at the end of the 3.03-s interval is 99.0 rad/s
a .40-kg bucket of bait, attached to the end of a .75 m string, is whirled around in a circular horizontal path. What is the speed of the bucket
In a hydroelectric installation, a turbine delivers 1890 hp to a generator, which in turn converts 37.9% of the mechanical energy into electrical energy. Under these conditions,
The plates of a parallel-plate capacitor in vacuum are 25 micrometer apart and 88 square cm in area, Calculate the charge on each plate, the capacitance and the energy density
What volume of space contains an energy equal. A car in stop-and-go traffic starts at rest, moves forward 12m in 8 seconds, then comes to rest again. The velocity-versus-time plot for this car is given.
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