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A fully charged capacitor with a voltage of 270 kV is discharged through a resistor.
a) What is the voltage across the capacitor at the end of four time constants?b) At this time, what is the voltage across the resistor?
A small steel ball bearing with a mass of 17g is on a short compressed spring. When aimed vertically and suddenly free, spring sends the bearing to a height of 1.33 m. compute the horizontal distance ball would travel if the same spring were aimed..
If the threshold frequency for platinum is 1.3x10^15 s^-1, what is the range of frequencies that do not eject an electron
A water bed has dimensions of 1.83 m x 2.13 m x 0.229 m. The floorof the bedroom will tolerate an additional weight of no more than6660 N. Find the weight of the water in the bed to determinewhether it should be purchased.
A satellite circles the earth in an orbit whose radius is 2.25 times the earth's radius. What is the period of the satellite
Calculate and compare the electron densities of a piece of aluminum 1 cm thick and a piece of iron of the same density thickness. Show your work.
If a violin string vibrates at 460Hz as its fundamental frequency, what are the frequencies of the first four harmonics
The resonant LC circuit in your radio contains a coil with L = 0.363 mH inductance. By turning the radio knob you adjust the capacitor to C = 34.1 pF. What is the wavelength of the radio waves your radio is receiving?
95.8 kg of ice is melted into water then raised to a temperture of 325.8 K. How much energy is needed to complete this process?
A 4 kg mass is connected to a spring (k = 730 N/m) platform which undergoes simple harmonic motion in the vertical direction. The amplitude of the oscillation is 5 cm. At t=0 the box is 5 cm above the equilibrium position.
A patient is going to be prescribed bifocals which will be 3.20 cm from the eye. what is the patient's near point
A certain lightbulb filament when hot has a resistance of205 Ω. The potential difference across the filament at acertain instant is standard household voltage, 120 V.
If a ball has a net positive charge of 57 ?C, how many electrons must be added to make the ball neutral
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