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A certain double-pane window consists of two glass sheet, each 80 cm x 80 cm x 0.30 cm, separated by a 0.30 cm stagnant air space. The indoor surface temperature is 20 deg C, while the outdoor surface temperature is 0 deg C. How much heat passes through the window each second? k= 2 x 10^-3 cal/s cm C for glass and 2 x 10^-4 cal/s cm C for air.
A positively charged oil drop of mass is injected into a region of uniform electric field between two oppositely charged, horizontally oriented plates spaced 16 cm apart. what is the magnitude of the charge on the drop
Two equally charged particles, held 3.4 × 10-3 m apart, are released from rest, what are the mass of the second particle and, the magnitude of the charge of each particle
What is the wavelength of an 102.1 FM radio station and What is the wavelength of an 1310 AM radio station
A baseball m = 0.56 kg is spun vertically on a massless string L = 0.94 m. The string can only support a tension of T = 9.4 N before it will break. What is the maximum speed at the top of the loop in m/s
How do I calculate final velocity of a planet moving around a star? The things I know are the positions of star/planet initial V of the planet, Final velocity of the planet after the force of the sun has acted on it
Use conservation of energy to determine the speed the child will have at the bottom of the arc when she is let go
An ideal monatomic gas expands isothermally from 0.600 m3 to 1.25 m3 at a constant temperature of 800 K. If the initial pressure is 8.00 10^4 Pa. Find the thermal energy transfer Q
Comet Halley has an orbital period of about 75 years. Determine the average distance of Comet Halley from the sun in AU
You create a plot of T2 (in s2) vs. L (in m) and the linear fit of your graph gives a slope of 3.7484 ± 0.0069. What is the value of the local gravitational constant, g?
A wheel is rotating freely at angular speed 490 rev/min on a shaft whose rotational inertia is negligible. A second wheel, initially at rest and with 5 times the rotational inertia of the first, is suddenly coupled to the same shaft. (a) What is the ..
The distance between the lenses in a compound microscope is 18 cm. The focal length of the objective is 1.5 cm. what must be the focal length of the eyepiece
A potential difference of 90 mV exists between the inner and outer surfaces of a 7.5 nm thick cell membrane. What is the electric field inside the cell membrane and inside the actual cell. Explain
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