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A boy scout starts a fire by using a lensfrom his eyeglasses to focus sunlight on kindling 5.6 cm from the lens. The boy scout has a nearpoint of 14.2 cm. When the lens isused as a simple magnifier, give values for the followingconditions. (Hint: Assume a "normal" eye.)
(a) What is the maximum magnification that canbe achieved?
(b) What is the magnification when the eye is relaxed?
a wheel is spinning freely on its axis with an angular velocity w of 2 rad/s. What is its renitic energy if the angular velocity is increased to 10 rad/s
When diving for prey, bald eagles can reach speeds of 200 mph (322 km/h). Suppose a 6.0kg eagle flying horizontally at 322 km/h suddenly grasps, What's the eagle's speed just after grasping the rabbit
A tuning fork is set into vibration above a vertical open tube filled with water, What is the frequency of the tuning fork
In a double-slit experiment, slits separated by 1.290e-4 m are illuminated by a coherent 571 nm light source. What is the angular position of the first bright fringe
Examining your imange in a convex mirror whose radius of curvature is 24.6cm, Where is the image of your nose located
A rocket burns fuel at a rate of 200 kg/s and exhausts the gas at a relative speed of 4.0 km/s. Find the thrust of the rocket
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 solar energy coming to the earth by radiation is 1,340 W/m If the sun has a radius of 7.000*10^8m, what is the temperature of the sun
Two conductors having net charges of 14 µC and ?14 µC have a potential di?erence of 11.1 V. Determine the capacitance of the system
Fuel systems of modern cars are designed so thermal expansion of gasoline doesn't result in wasteful and polluting fuel spills. How large an expansion tank do you specify
an electric current of 1.00 A is flowing through a copper filament diameter 1.00 mm, calculate the average electron velocity v and the ?- factor, the positive and negative charge densities in the S' frame
The velocity of the transverse waves produced by an earthquake is 4.29 km/s, while that of the longitudinal waves is 7.5075 km/s. How far away was the earthquake
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