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A stamp collector is viewing a stamp by a magnifying glass held next to her eye. Her near point is 25 cm from her eye. The refractive power of a magnifying glass that has an angular magnification of 6.0 when the image of the stamp is located at the near point is 20 dioptres.
a) What is the angular magnification when the image of the stamp is 41 cm from the eye?
a 55 kg person is at rest at the left end of a floating 180kg log. It starts to run toward the other end with a velocity 2.2m/s relative to the still water. what is the velocity of the log
A large tank of water is full and has a depth of 10.0 m. What is the pressure at the bottom of the tank? What would the velocity of the water be
A 3.3-mC charge is moved through a 150-V potential difference. How much work is required to move the charge
In the x-y plane, a point of +2.6 uC is on the x-axis at (-3 cm, 0), and a second point charge of -3.4 uC is also located on the x-axis, Determine the Work required (in keV) to move an electron from Pa to Pb
The National Aeronautics and Space Administration (NASA) studies the physiological effects of large accelerations on astronauts. Some of these studies use a machine known as a centrifuge.
the new earth-pluto supershuttle line boasts that it can take you between the two planets which are about 5.0 h apart
A car is travelling at a constant speed of 32m/s on a highway. At the instant this car passes an entrance ramp, a second car enters the highway from ramp.
In the school cafeteria, a trouble-making child blows a 10.0 g spitball through a 30.0 cm straw. what is the speed of the spitball as it leaves the straw
Compute the rms speed of a nitrogen molecule at 36.0°C. At what temperature will the rms speed be half that value
A crate is dragged 3m across a rough floor at a constant speed by a worker applying 500N at an angle of 30 deg above the horizontal. How many forces act on the crate
A wire loop that encloses an area of 10 cm2 has a resistance of 5 Ohms. How much charge flows past a point in the wire
a stone is thrown horizontally at a speed of 5.0m/s from thetop of a cliff that is 78.4m high, how long dies it take the stone to reach the bottom of the cliff
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