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An intense light source radiates uniformly inall directions. At a distance of 5.2 {\rm m} from the source the radiation pressure on aperfectly absorbing surface is6.9×10-6 {\rm Pa}.
What is the total average power output of the source?
The primary coil of a transformer hasN1=360turns, and the secondary coil hasN2=1 890turns. what rms voltage is developed across the secondary coil
A ball with m = .5 kg is thrown from the building (40m height) withinitial velocity 15 m/s downwards, find time it takes to reach the maximum height
You have a concave spherical mirror with a 13.3-cm radius of curvature. You place an object on the mirror's axis, 19.7 cm in front of the mirror
for n2 at 25oc and 1.00 atm calculate the number of collisions per second made by one molecule the number of collisions
the surface pressure of venus is about 90 bar and the surface temperature is ap-proximately 880 degrees f. the
A silicon sample is doped with phosphorus at 1.23 parts per million. Phosphorus acts as an electron donor, Calculate the number of free electrons per unit volume of the doped silicon.
An astronomical telescope is designed with an overall magnification of 80x. The objective has a focal length of 98.0 cm. What should be the focal length of the eyepiece
Calculate the amount of work (in electron-volts) it would take to move an electron from 11.6 to 13.4 away from a +3.50 point charge.
what is the velocity of a beam of electrons that go undeflected when passing through perpendicular electric and
what is the kinetic energy of the system. assume the roller coaster in Fig. 6-41 (h1 = 36 m, h2 = 14 m, h3 = 25) passes point 1 with a speed of 2.00 m/s. If the average force of friction is equal to one sixth of its weight, with what speed will it ..
suppose you have a near-point distance of 16 cm. the angular resolution of the eye is determined by diffraction see the
Two stunt drivers drive directly toward each other. At time t=0 the two cars are a distance D apart, car 1 is at rest, and car 2 is moving to the left with speed v0, At what time do the two cars collide?
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