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f the U.S. demand for electricity continues to grow at about 2% per year, how many more MWe would be needed to meet that demand in 10 years, What fraction of our present use of natural gas is this
What is the density of Kripton gas at standard temperature and pressure? The atomic mass of Kripton is 83.80 atomic mass unit
A flat sheet of sodium chloride has a thickness of 2.50 cm. It is on top of a flat sheet of fused quartz that has a thickness of 1.26 cm, how far (in cm) would it have traveled in a vacuum
A 16.5 kg gold bar at 26.0°C is placed in a large, insulated 0.800 kg glass container at 15.0°C with 2.00 kg of water at 25.0°C. Calculate the final equilibrium temperature
Use conservation of energy to determine the speed the child will have at the bottom of the arc when she is let go
A circular wire loop whose radius is 19.0 cm carries current of 2.30 A. It is placed so that the normal to its plane makes an angle of 29.0° with a uniform magnetic field of 11.0 T. Calculate th
An LCR circuit contains a resistor with R = 450 ? and a capacitor with C = 3,500 ?F. If the resonant frequency is 30 kHz, what is the value of the inductance
Two capacitors with C1 = 600 pF and C2 = 780 pF are connected in parallel. What is the reactance of the equivalent capacitance at33 kHz
A 0.148-A current is charging a capacitor that has square plates 6.00 cm on each side. The plate separation is 4.00 mm. Find the displacement current between the plates
When yellow sodium light, ?=589nm, falls on a diffraction grating, its first-order peak on a screen 55.0cm away falls 3.29cm from the central peak. What is the wavelength of the new source
A proton exeriences a magnetic field B= 1.9 X 10^-4i^ T and electric field E = 3.2 j^ N/C, what is the net force on the proton
Standing waves on a 1.7m -long string that is fixed at both ends are seen at successive frequencies of 36 Hz and 54Hz. What is the fundamental frequency
calculate the mass and density of methane gas contained at 1000 psia and 68 degrees Farenheit in a cylinder with volume 3.20 cu ft
The wall of a house consists of three layers: a wooden outer wall with an R factor of 1.0, a 3in layer of fiberglass insulation with an R factor of 11, what is the rate of heat loss throug an 8ft by
The sound intensity in front of a loudspeaker diaphragm vibrating at 2kHz is 4.3 W/m^2, with an acoustic power output of 0.3W. Calculate the diameter of the diaphragm. in cm
A solid insulating cylinder of radius A is surrounded by a hollow, concentric conducting cylinder of inner radius A and outer radius B. What is the total charge on the solid cylinder
A bungee jumper undergoes simple harmonic motion with amplitude 4.6m and frequency 0.145Hz, Determine the bungee jumper's velocity at 1.0 s
A 32.2 uF capacitor is connected to a 50.2 ohm resistor and a generator whose rms output is 37.2 V at 50.0 Hz. Calculate the rms current in the circuit. Calculate the phase angle for the circuit
A father racing his son has 1/4 the kinetic energy of the son, who has 1/3 the mass of the father.What are the original speeds of the father and son
A disk spinning with angular velocity , w=12 rad/s slows down to a stop in 4 seconds. What is the angular displacement delta theta
A woman slowly lifts a box weighing 48.0 N from the floor to a shelf 1.50 m above, Find the net work done on the box
The magnetic coils of a tokamak fusion reactor are in the shape of a toroid having an inner radius of 0.545m, Find the magnitude of the magnetic field inside the toroid at the following locations
A weightlifter bench-presses a 170.0 kg barbell from his chest to a height equal the length of his arms 0.750 m. What is the potential energy of the barbell relative to the weightlifter\'s chest after
A satellite moves in a circular orbit around the Earth at a speed of 4420 m/s. Determine the period of the satellite's orbit
A man drags a table 3.80 m across the floor, exerting a constant force of 51.0 N, directed 31.0° above the horizontal. Find the work done by the applied force