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Moonlight is primarily reflected sunlight. If the moon reflects 15% of the photons that strike its surface, and we know that the intensity of sunlight at earth is I, what is the intensity of moonlight at the Earth during a full moon? Distance from earth to moon 375x10^3 km, distance from the sun to the earth 149x10^6 km, the radius of the earth is 6,378.1 km, and the radius of the moon is 1,737.4 km.
Illustrate what is the intensity of the beam transmitted through the three sheets when 1 = 19.0°, 2 = 51.0° and 3 = 100.0° ?
A sphere of radius 3.09 cm and a spherical shell of radius 9.22 cm are rolling without slipping along the same floor. what should the ratio of the sphere\'s angular speed to the spherical shell\'s angular speed be
A soccer ball of diameter 30 cm rolls without slipping at a linear speed of 2.7 m/s. Through how various revolutions has the soccer ball turned as it moves a linear distance of 16 m.
An electric dipole consists of 1.50g spheres charged to \pm 2.30nC at the ends of a 6.00cm long massless rod. What is the dipole's angular velocity at the instant it is aligned with the electric field
what is the diameter of the copper rod. Pull horizontally on a crate with a force of 140 N and it slides across the floor in a dynamic equilibrium. How much friction is acting on crate.
Two tugboats pull a disabled super tanker. Each tug exerts constant force of 1.20 multiplied by 106 N, one 19° west of north and the other 19.0° east of north, as they pull the tanker 0.69 km toward the west. What is the total work they do on supe..
A device used in radiation therapy for cancer contains 0.83 g of cobalt-60 (59.933 819 u). The half-life of this isotope is 5.27 yr
The volume of a gas is halved during an adiabatic compression that increases the pressure by a factor of 2.5
Various voltages V are applied across a resistor and for each value of V the current I through the resistor is measured, What is the resistance R of the resistor
A charge of -5 micro-coulombs is placed at x = 0 cm, y = 0 cm. Another charge of -5 micro-coulombs is placed at x = +22 cm, y = -50 cm. When measured counter-clockwise from the x axis, what angle is the electric force vector acting on the charge a..
If the Hawaiian hot spot is a fixed hot spot, which of directions is closest to the direction that the Pacific Plate was apparently moving as the Emperor Seamount Chain formed.
.A cosmic-ray proton in interstellar space has an energy of 10.0 MeV and executes a circular orbit having a radius equal to that of Mercury’s orbit around the Sun (5.80 m). Illustrate what is the magnetic field in that region of space?
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