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A 40 cm telescope has a focal ratio of f/10.a) What is the light-gathering power of this telescoperelative to that of a single human eye? Use a pupil diameter of 7 mm.b) What is the diffraction-limited angular resolution (inarc-seconds) of this telescope for a wavelength of 480 nm?c) What would be the focal length (in mm) of the eyepiecenecessary to achieve a magnification of 200 with this telescope?
A car is traveling along a straight road at a velocity of +34.0 m/s when its engine cuts out. Find the velocity of the car at the end of the initial ten-second interval
During basketball tryouts, Umass walk-on hopeful Dwayne Madison stole a pass at his own free throw line. He then spring straight down the court to the opponent's free throw line, What was his avg acceleration to the midway point
A sphere of conducting material has an empty hollow cavity within it and a net charge of Q=+5 distributed over its surfaces. What is the magnitude of the electric field within the hollow cavity
A sample of helium-4 behaves as an ideal gas as it is heated at constant pressure from 292 K to 402 K. If 19 J of work is done by the gas during this process, what is the mass of helium present?
The two most prominent wavelengths in the light emitted by a hydrogen discharge lamp are 656 nm(red) and 486 nm (blue). What is the distance between the first-order red and blue fringes? (d=)
A circus clown wiwith a mass 54 kg is launched vertically from a springloaded cannon using a spring with a spring constant of 3.5*10^3 N/m. What is maximum speed of clown
A roller coaster is pulled up a hill of height 95m before being released to coast down a ramp that is inclined at 56 degrees above the horizontal. find the magnitude of average frictional force on the car
Two 10-cm charged disks face each other, 20 cm apart. The left disk is charged to -30 nC and the right disk is charged to +30 nC. What is the electric field (both magnitude and direction) at the midpoint between the disks? What would be the force (ag..
The sun emits electromagnetic radiation that hits the Earth. the maximum wavelength that the sun emits is at =545NM. AT THIS wavelength, the intensity of light from the sun that strikes the Earth is I= 650 W/m2
An electric motor rotating a workshop grinding wheel at a rate of 8.90 101 rev/min is switched off. How long does it take for the grinding wheel to stop
One end of a spring is attached to a wall. A 28N pull on the other end causes the spring to stretch by 2.8cm, What is the spring constant
Each summer along the Oregon coast there is a contest for archers. People line the beaches and wait for a low-flying airplane to pass overhead loaded with goodies.
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