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Evaluate the critical angles for the following materials when surrounded by air. Suppose that λ = 589 nm.
(a) zircon
°
(b) fluorite
(c) ice
a fire hose 3.51 cm in diameter is capable of spraying water at a velocity of 24.7 ms. for a continuous horizontal flow
A luge and its rider, with a total mass of 82 kg, emerge from a downhill track onto a horizontal straight track with an initial speed of 43 m/s. Assume that they stop with the constant deceleration of 3.2 m/s2.
An aluminum wire has the same resistance as a copper wire of the same length. Find the ratio of the aluminum wire's diameter tothe copper wire's diameter.
how is sound produced? key words transverse longtitudinal particleshow are standing waves set up in the instruments?
A prescription for a corrective lens calls for +1.50D. The lensmaker grinds the lens from a "blank" with n = 1.56 and a preformed convex front surface of radius of curvature of 40.0 cm. What should be the radius of curvature of the other surface?
you throw a stone upward with an intial speed of 5.8m/s from a third-story office window. Find the speed of the stone just before it hits the ground
the planet neptune is 4.5 x1012m from the earth. its diameter is 4.9 x 107m. what diameter telescope objective would be
The potential equals 7.52 V at the midpoint between two point charges that are 0.95 m apart. One of the charges is 1.10 10-9 C. Find the value of the other charge.
A dipole moment is placed in a uniform electric field oriented along an unknown direction. The maximum torque applied to the dipole is equal to 0.1 N.m. When the dipole reaches equilibrium its potential energy is equal to -0.2 J.
Three blocks are in contact and sitting on frictionless table. What is the magnitude of the force exerted by the third block on the second block
A potential di?erence of 10 V is found to produce a current of 0.44 A in a wire of length 3.1 m with a uniform radius of 0.44 cm What is the resistivity of the wire
During 5 successive 0.97 min intervals, a runner moves at the following constant speeds: 0.436 km/min, 0.250 km/min, 0.160 km/min, 0.160 km/min, and 0.320 km/min. calculate the total distance traveled and the average speed.
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