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The light ray in the subsequent figure emanates from a point on one wall of a room and is incident on a plane mirror that lies flat on the opposite wall. The reflected ray strikes the left-hand wall at point A, which is a distance h =1.1 m below the light source, and d = 2.4 m from the mirror. What is the angle of incidence θi?
An archer's bow is drawn at its midpoint until the tension in the string is 1.07 times the force exerted by the archer. What is the angle between the two halves of the string
A rotating fan completes 1000 revolutions every minute. Consider a point on the tip of a blade, at a radius of 0.11 m. What is the speed of the point
A 100 g aluminum calorimeter contains 250 g of water. The two substances are in thermal equilibrium at 10°C. Determine the specific heat of the unknown second sample
Suppose a single electron orbits about a nucleus containing two protons (+2e), as would be the case for a helium atom from which one of the naturally occuring electrons is removed, Determine the magnitude of the electron's centripetal acceleration
A yo-yo has a rotational inertia of 930 gcm2 and amass of 110 g. Its axle radius is2.9 mm, and its string is 130 cm long. What is the magnitude of its linear acceleration
find the potential energy at each location below. How far from the point of the drop will the rock hit the ground.
standing on the sidewalk next to your parked car you hear thesiren of an approaching fire engine. what is the velocity of sound in air
Three resistors are connected in parallel to a 12.0 V battery. Two of the resistance values are 58\Omega and 42\Omega. what is the value of the third resistor
The suspension system of your 1200 kg car has a natural oscillation frequency of 2:00 Hz without functioning shock absorbers. find At what speed are you driving
Calculate the speed of an electron after it accelerates from rest through a potential difference of 160 .
a the star zog has a mass of 1.57 e30 kg. calculate the angle by which light from a distant star is deflected at a
At the very bottom of the circle, a too sharp knife is suddenly inserted to cut the string directly below the point of support. How far to the right of where the string was cut does the ball hit the floor.
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