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A circuits consists of a resistor and a capacitor in series with an ac source that supplies an rms voltage of 240 V. At the frequency of the source the reactance of the capacitor is 53.5. The rms current in the circuits is 4.00 A. What is the average power in W supplied by the source?
a. 129
b. 256
c. 435
d. 645
e. 800
A camera has a lens with a focal length of 22.2 cm. When an object is placed 3.55 meters away is being photographed
q1. a 245 ball is tied to a string. it is pulled to an angle of 5.20 and released to swing as a pendulum. a student
An RL circuit consists of a switch, an emf source Eo, a 4 kΩ resistor, and a 5 H inductor. If the potential across resistor is 16 V 5 ms after switch is closed, find out the source emf, Eo.
How many liters of gasoline would give the same mechanical energy given that each liter provides 8.50x10^6 J of mechanical energy.
Given that the rotational constant of HF is 20.5cm-1, calculate the bond length of HF molecule
Consider a dry air parcel initially at the surface (T=25 degrees celsius and p=980mb) that rises adiabatically to a final location at 900mb
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Estimate the thickness of lead shielding needed to reduce the exposure rate 2.5 m from a 5.92x10^11 Bq point source of Cs-137 to 1.0 mR/hr.
An air-track glider attached to a spring oscillates with a period of 1.50s . At t=0s the glider is 5.20cm left of the equilibrium position, calculate the phase constant
At 273 K and 1.00 x 10^-2 atm, the density of a gas is 1.24 x 10^-5 g/cm3. Find the Molar Mass of the gas
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