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(a) Why does the land lose heat more quickly at night than a body of water does?
(b) Deserts are very hot during the day and cold at night. Why is there such a large nocturnal temperature drop?
An object is placed 20.0 cm from a converging lens with focal length 15 cm. A concave mirror with focal length 10 cm is located 75 cm to the right of the lens as shown in the figure. Note: The figure is not drawn to scale. Which pair of terms most..
In the Thorium Decay chain, how much energy is released in total per initial Thorium atom? How many watts of power would a 1 kg lumo of pure Thorium produce? How many watts would that same lump is producing one billion years later?
A tourist takes his 27.0 W, 120 V AC razor to Europe, finds a special adapter, and plugs it into 225 V AC. Assuming constant resistance. What power does the razor consume as it is ruined
A 50 kilogram person is ice-skating due north with a velocity of 5.8 m/s when he collides with a 42 kilogram kid. find the direction of the kid velocity just before collision
A small piece of dust of mass m = 1.3 mu or micro g travels horizontally through an electric air cleaner in which the electric field is 479 N/C. What is the charge on the dust particle
A concave mirror has a focal length of 44.2 cm. The distance between an object and its image is 68.1 cm. Find (a) the object and (b) the image distance assuming that the object lies beyond the center of curvature.
A spaceship is approaching a space station at a speed of 1.8 multiplied by 105 m/s. The space station has a beacon that emits light by a frequency of 6.3 multiplied by 1014 Hz. Find the change infrequency (the "frequency shift"), Δf, for the light fr..
Ice at -10.0 °C and steam at 118 °C are brought together at atmospheric pressure in a perfectly insulated container. find the ratio of the mass of steam to the mass of ice
A single mass m1 = 4.2 kg hangs from a spring in a motionless elevator. The spring is extended x = 13.0 cm from its unstretched length. What is the distance the upper spring is extended from its unstretched length
The 10th and 18th terms of an arithmetic progression are 41 and 73 respectively. Find the 27th term.
A loudspeaker at the origin emits a 140Hz tone on a day when the speed of sound is 340 m/s. What is the distance between these two points
A rock is thrown directly upward from the edge of the roof of a house that is 34.6 meter tall. Obtain with what speed was the rock thrown
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