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An image of the moon is focused onto a screen using a converging lens of focal length (f= 34.3 centimeter). The diameter of the moon is 3.48x106 meter, and its mean distance from the earth is 3.85x108 meter. Evaluate the diameter of the moons image?
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 stiff straight horizontal wire of length 25 cm and mass 20g is supported by electrical contacts at its ends but is
Two equal point charges of magnitude 4.0 µC are situated along the x-axis at x1 = -2.0 m and x2 = -2.0 m. What is the electric potential energy of this system of charges
Calculate the earth’s radiative temperature (TE) for an albedo value of 0.27, 0.30 and 0.33. Then estimate the surface temperature using a reasonable estimate of the temperature increase due to the greenhouse effect. Summarize the scientifically vali..
A 78 g ice cube at -18°C is placed in a lake whose temperature is 12°C. Calculate the change in entropy of the cube-lake system as the ice cube comes to thermal equilibrium with the lake. The specific heat of ice is 2220 J/kg·K. (Hint: Will the ice c..
A dead battery is charged by connecting it to the live battery of another car with jumper cables. Determine the current in the dead battery
the moon has a mass of 7.36 x 1022 kg and a radius of 1.74 x 106 m.a what is the acceleration due to gravity on the
A hotel elevator ascends 160 with a maximum speed of 4.6 . Its acceleration and deceleration both have a magnitude of 1.1. How long does it take to make the complete trip from bottom to top
The area of the opening can be calculated from pi (3.1416) times the radius squared. If your pupil is open to a radius of 3.5 mm, explain how much light energy passes through in one minute? Give your answer in mJ.
In the Bohr theory of the hydrogen atom, an electron,oves in a circular orbit about a proton, where the radius of the orbit is 9.51 A. find the electrostatic force between the two
A person going for a morning jog on the deck of a cruise ship is running toward the bow of the ship at 2.2 m/s while the ship is moving ahead at 7.5 m/s. What is the jogger's velocity relative to the water now
Find out the acceleration of the sled and child
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