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The image of a tree on a 35 millimeter color slide is 1.9 millimeter high. It is to be projected onto a screen 10 meter from the slide, and is to appear 370 millimeter high.
(a) Find what focal length lens is needed?
(b) Determine the distance in meters between the lens and the slide?
(c) Evaluate what is the magnification of the system?
A wire 3.00 m long and 0.450 mm2 in cross-sectional area has a resistance of 41 at 20°C. what is the temperature coefficient of resistivity
question a non uniform rod ab of mass m and length 2l. the mass per unit lenght of the rod is mx.at a point of the
A 50 kg cylinder of radius 20 cm starts from rest and reaches 2.0 revolutions per second after 2.0 seconds. Through what angle did it turn
A dolphin in seawater at a temperature of 25 °C emits a sound wave directed toward the ocean floor 246 m below. How much time passes before it hears an echo? (The speed of sound in ocean water is 1533 m/s.)
As a engineer, you are designing a heat pump that is capable of delivering heat at the rate of 22 kW to a house. The house is located where, in January, the average temperature is 10°C.
A Michelson interferometer is illuminated with monochromatic light. Evaluate the wavelength of the light
What are (a) the x component,(b) the y component, and(c) the z component of = - + if = 1.1 + 1.7 - 5.9, = -8.4 + 4.5 + 1.9, and = 8.9 + 7.8 + 7.1. (d) Calculate the angle between and the positive z axis.
When an ion accelerates through a potential difference of 2180V , its electric potential energy decreases by 1.40×10-15J What is the charge on the ion
An electric trimmer blade has rotational inertia 1.85×10^-4 kg*m^2. How much work was done to accelerate the blade
A 10.0 kg crate slides along a horizontal frictionless surface at a constant speed of 4.0 m/s. What is the speed of the crate when it arrives at the lower surface
a cylinder is rolling without slipping along a roller coaster. it starts at height h above the ground with an unknown
a component with a 15 ohm resistor is rated for use at power levels not exceeding 1603 mw. how much current can safely
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