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The current in an incandescent lamp is 0.5A when connected to a 120-V circuit, and 0.2 A when connected to a 10-V source. Does the resistance of the lamp change in these cases? Explain your answer and defend it with numerical values.
A 210-kg load is hung on a wire of length of 4.80 m, cross-sectional area 2.00 10-5 m2, and Young's modulus 8.00 1010 N/m2. What is its increase in length
an object undergoing simple harmonic motion has a maximum acceleration of 85.29 ms2 and a maximum speed of 1.44 ms.
explain at least two key elements for producing ideas that you believe led the american colonists to the boston tea
During the design of a ski ramp, for safety it was decided that a skier should have a speed of no more than 30 m/s when reaching the bottom of the ramp. It is known that a typical 85 kg skier has a speed of 2 m/s upon leaving the starting gate at ..
hree uniform meter sticks, each of mass , are placed on the floor as follows: stick 1 lies along the axis from = 0.210 m to = 1.21 m, Calculate the location of the center of mass of the meter sticks
a narrow slit is illuminated with light of wavelength 590 nm. a diffraction pattern is produced on a screen positioned
a pump is used to empty a 4000 l wading pool. the water exits the 3.0-cm-diameter hose at a speed of 2.2 ms .how long
A roller coaster car travels down a hill and is moving at 18 m/s as it passes through a section of straight, horizontal track. what is the speed of the car at the top
An electron in a television picture tube has a classical kinetic energy of 60 keV, which is the kinetic energy that Newton would calculate using the measured speed, What is the actual kinetic energy of the electron
A 58.0 m length of insulated copper wire is wound to form a solenoid of radius 1.8 cm. The copper wire has a radius of 0.51 mm. What is the self-inductance of the solenoid
A 54g ice cube can slide without friction up and down a 33 degree slope. The ice cube is pressed against a spring at the bottom of the slope, compressing the spring 11cm . The spring constant is 25 N/m When the ice cube is released, what distance wil..
A 1000-turn coil of wire that is 2.4cm in diameter is in a magnetic field that drops from 0.15T to 0 T in 11ms, compute the emf of the coil
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