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A certain capacitor in a circuit has a capacitive reactance of 26.9 ? when the frequency is 189 Hz. What capacitive reactance does the capacitor have at a frequency of 6210 Hz?
To determine the location of her center of mass, a physics student lies on the lightweight plank supported by two scales 2.50 apart, as indicated . If left scale reads 300 , and right scale reads 122 .
The diffraction pattern produced by the aperture is observed on a screen at a distance of 4 m from the aperture. The power density at the centre of diffraction pattern is measured to be 7 W/m2.
A pair of in-phase stereo speakers is placed side by side, 0.80 m apart. What is the lowest frequency that will produce constructive interference at your location
An Argon ion laser has a gain bandwidth of 2 GHz. Find the number of standing wave cavity modes within the gain bandwidth of the argon ion laser
A piece of metal is pressed against the rim of a 2.8- kg, 25- cm-diameter grinding wheel that is turning at 2800 rpm. how much force must you press to stop the wheel in 20.0 s
A 47% efficient device uses chemical energy to generate 550J of electric energy. How much chemical energy is used
A 1.70 kg block is released from rest and allowed to slide down a frictionless surface and into a spring. The far end of the spring is attached to a wall.
Yellow light that has a wavelength of 6.32 x10^2 nm passes through two narrow slits that are 0.201 mm apart. An interference pattern is produced on a screen 183 cm away. What is the location of the first-order image.
Describe, in general terms, how we may be able, through some simple experiments, determine the mass of the Earth
A clock has a second hand whose tip rubs against the inside of the glass cover. what is the minimum torque that must be applied to the second hand
An automobile tire has a volume of 1 .64 x 10-2 m3 and contains air at a gauge pressure of 165 kPa when the temperature is 0.000C. What is the gauge pressure of the air in the tires
You discover a new extra-solar planet orbiting a 1 solar mass star using high spatial resolution imaging and adaptive optics in the infrared part of the spectrum. What is the planet-star separation if you measure an angular separation of 0.6"
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