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A charged capacitor is connected to a resistor and a switch as in the figure below. The circuit has a time constant of 2.5 s. After the switch is closed, the charge on the capacitor is 90% of its initial charge.
a) Find the time it takes to reach this charge.
A circuit consists of a battery with a closed circuit, a terminal voltage of 12.0 V, and 1.0-?, 2.5-?, 5.0-?, and 7.5-? resistors connected in series, oriented as in figure a above, Calculate the total power dissipated by the load resistors
A certain lightbulb has a tungsten filament with a resistance of 19.1 ? when at 20.0°C and 139 ? when hot, Find the temperature of the hot filament
An ac generator has a maximum potential difference output of 155V. find the rms potential difference output
Two loudspeakers are placed 3-m apart. They emit 498 Hz sounds, in phase. A microphone is placed 3.2m distant from a point midway between the two speakers, where an intensity highest is recorded.
A man drinks a bottle of beer and proposes to work off its460kj by exercising with 20 kg barbell. how many times must he lift the barbell
H-F molecule has spring constant of 970 N/m. Assume that an H-F chemical laser, which lases betwee vibrational states of the H-F molecule, how many photons per seconde does it emit
A machine part rotates at an angular speed of 0.46 rad/s; its speed is then increased to2.1 rad/s at an angular accelerationof 0.54 rad/s2. Find the angle through which the part rotates
a flare is dropped from an airplane flying horizontally at uniform velocity constant speed in a straight line.
A flat sheet is in the shape of a rectangle with sides of lengths 0.400m and 0.600m. Find the magnitude of the electric flux through the sheet
A 120-V fish tank heater has a power rating of 112 W. Calculate the resistance of the heater and Calculate the current through the heater
A very bouncy ball is dropped from a height of 2.37 m to an asphalt playground surface and the height of its 5th bounce is measured to be 1.69 m. Find the coefficient of restitution of the ball for a collision with asphalt.
A popular pastime is to see who can push an object closest to the edge of a table without its going off. You push the 100 g object and release it 1.00mm from the table edge. If the coefficient of kinetic friction is 0.500, what was the object's sp..
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