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The owner of a van installs a rear-window lens that has a focallength of -0.330 m. When the owner looks out through the lens at anobject located directly behind the van, the object appears to be0.200 m from the back of the van, and appears to be 0.310 mtall. (a) How far from the van is theobject actually located, and(b) how tall isthe object?
A slit of width 2.0 ?m is used in a single slit experiment with light of wavelength 650 nm. If the intensity at the central maximum is Io, what is the intensity 10° from the center?
a car is exiting the 105 freeway at sepulveda south at a constant speed of 40 miles per hour. the freeway ramp is a
Two boxes (m1 = 46.0kg and m2 = 29.0kg ) are connected by a light string that passes over a light, frictionless pulley. Find the acceleration of each box
Two thin beams are joined end-to-end to make a single object. The left beam is 11.9 kg and 1.00 m long and the right one is 41.1 kg and 2.00 m long. What is the gravitational torque on the objects about an axis through its left end
An unstable particle produced in a high-energy collision is measured to have an energy of 483 MeV and an uncertainty in energy of 84 keV. Use the Heisenberg uncertainty principle to estimate the lifetime of this particle. the answer is in seconds
An incident beam of photons is scattered through 138.5° the wavelength of the scattered photons is 124.66 pm. What is the wavelength of the incident photons
Assume that an inexpensive watch runs 0.004% slower than a "perfect watch" (viz., a "time standard") that neither loses nor gains time, what would the perfect watch measure for this time interval
A sprinter running the 100 m dash has a constant acceleration of 3.0 m/s2 for the first 3.5 seconds of the race, How long does it the sprinter to run the race
A platinum resistance thermometer has resistances of 230.0 omegacap.gif when placed in a 0°C ice bath and 236.8 omegacap.gif, What is the melting point of this substance
A solid disk with a moment of inertia of 3.53 kg m2 is spinning about its axle such that the disk rotates by 2p radians (1 rev) every 0.300 s. The axle is tilted through an angle of p radians (180°) in a time of 0.28 s.
Darius the dare devil plans to launch his rocket carat the top a ramp inclined at 20.0 degrees to the horizontal over apit of fire 20 m in diameter, unfortunately the rocket motor failsat the foot of the ramp, when his speed is 12.6 m/s.
Assuming all the energy is retained by the hammer head, evaluate how much will its temperature increase? (Chead=0.11 kcal/kg degrees C) 1/2 m v^2 = mc Deltatemp solve for deltaTemp.
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