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A 82 kg explorer lands on Planet A, where the gravitational acceleration is 10.5 m/s^2. The radius of the planet is 7.91 x 10^7 m. What is the weight on this planet in Newtons? Express the answer to three significant digits.
Photons with wavelength 670 nm are capable of producing photoelectrons from a particular substance. Determine the substance's work function and cutoff wavelength
Consider a stellar atmosphere (consisting entirely of atoms with an absorption cross-section of s) where the number density, n, is NOT constant. Let n be linear with respect to depth:
The cross-section of a hollow cylindrical conductor with radii a = 0.90 cm and b = 4.70 cm which carries a current 7.00 Amps uniformly spread over its cross-section. Find the magnitude of the magnetic field at a distance of 2.10 cm from the axis.
If n=10, what is the largest value of the angular momentum l in this shell, How many electrons can be placed in this shell
The radius of the Sun is 6.95 × 108 m. It radiates heat at the rate of 5.42 × 1026 W. Assuming that it is a perfect emitter, what is the temperature of the surface of the Sun
The magnitude of the electrostatic force between two identical ions of mass 4.760×10-26 kg that are separated by a distance of 8.20 nm is 1.682×10-10 N. What is the charge of each ion
Assuming that the distance between the Earth and the Sun is approximately 1.5E11 m, the mass of the sun is 1E31 g, how long do we have before the sun runs out of fuel
What is Rosie's power output. A long, straight wire carries a current of 44 A. The magnetic field produced by this current at a certain point is 8.0 x10-5 T. How far is the point from the wire.
A cart loaded with bricks has a total mass of 21.2 kg and is pulled at constant speed by a rope. The rope is inclined at 27.2 ? above the horizontal and the cart moves 27.1 m on a horizontal floor. The coefficient of kinetic friction between groun..
A highway curve of radius 600m is designed for traffic moving at a speed of 85.0 km/hr. What is the correct banking angle of the road
A light source of original intensity I0 passes through two coaxial circular polarizers. What is the average intensity of the light passing through both polarizers
the resistivity of silver at 20 degrees C is 1.59 x 10^-8 ohms*m and it temp coefficient is 0.0061/degree C. Find resitance of silver wire at 43 degree C
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