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A telescope has an angular magnification of -30× and a barrel 1.02m long.
A) What is the focal length of the object?
Fo = ......m
B) What is the focal length of the eyepiece?
Fe)....... cm
Assuming that all photons reaching the solar cell give their energy to a charge carrier, what is the minimum power of a flash of light of wavelength 540nm that can be detected
The power is off for 34.0 s and throughout this time the flywheel slows as a result of friction in its axle bearings. Throughout the time the power is off, the flywheel makes 180 complete revolutions.
External forces compress 21 mol of ideal monatomic gas; during the process the gas transfers 15 kJ of heat to its surroundings, How much work was done on the gas
Consider a parallel-plate capacitor with an area of 1.1 cm2, At what voltage will this capacitor exhibit dielectric breakdown
A piece of a cloth is found to contain 15% of the C-14 present in a similar material today. How old is this cloth
Calculate the mass of the sun from the radius of the earth's orbit (1.50×1011 m), the earth's period in its orbit, and the gravitational constant G, What is the density of the sun
An L-R-C series circuit, R=150 ohms, L= 0.750H, and C= 1.70x10^-2uF. The source has a voltage amplitude of 140V, What is the average power delivered by the source
A double slit experiment has two different colors. The second-order bright fringe using 650nmred light is in the same place as the third-order bright fringe of the other color
Capacitors C1 = 3450 nF and C2 = 700 nF are initially connected in parallel and hold a combined charge of Qtoti = 783 nC. Find the total charge Qtotf and total energy stored in the final state
An object is placed 30 cm from a converging lens forms an image 40 cm from the lens. is the image which is formed real or virtual
A projectile is fired from ground at an angle 60 degrees above horizontal to hit a target on the wall, which is 25.0 m away. Find the initial speed of the projectile
A proton accelerates from rest in a uniform electric field of 524 N/C. What is the magnitude of the acceleration of the proton
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