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Discover the minimum aperture diameter of a camera that can resolve detail on the ground the size of a person(2.0 m) from an SR-71 Blackbird airplane flying at an altitude of 29 km. (Suppose light with a wavelength of 480 nm.)
D =____ mm
Suppose the asteroid starts from rest at a great distance (effectively infinity), falling toward Earth. How much work would have to be done on the asteroid by friction
A freezer is used to freeze 2.0 L of water completely into ice. The water andthe freezer remain at a constant temperature of T =0°C. Determine the change in the entropy of the freezer
A .230 kg baseball is thrown with a speed of 41 m/s. If the above ball comes to rest in the catcher's mitt in .085 seconds, how much force does the ball apply on the catcher's mitt
A 50 kg man is ice-skating due north with a velocity of 6.0 m/s when he collides with a 32 kg child. The man and child stay together and have a velocity of 3.0 m/s at an angle of 35° north of due east immediately after the collision.
one bright summer day a swimmer is floating with her head just above the surface of a large lake where the water has
in a worst-case design scenario a 2000kg elevator with broken cables is falling at 4.00ms when it first contacts a
βAn observer that is standing 12m from a stereo sound speaker perceives the sound level from the speaker to be 60 dβ. What is the decrease in the physical intensity in watts/m2
What is the resultant vector, R, obtained by adding vectors C and D? Express the magnitude to three significant figures. Express the angle to one decimal place.
Three moles of an ideal gas undergo a reversible isothermal compression at 21.5°C. During this compression, 1870 J of work is done on the gas. What is the change of entropy of the gas?
Two balls, one larger than theother, roll without slipping across a horizontal floor with thesame center of mass velocity. The ball with the larger radius hasthe larger magnitude of angular velocity about an axis through its center of mass. A rota..
At a given instant, the blood pressure in the heart is 1.50 104 Pa. If an artery in the brain is 0.43 m above the heart, what is the pressure in the artery
a long pipe of outer radius 3.80 cm and inner radius 3.23 cm carries a uniform charge density of 6.22 mcm3. using
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