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Q. A person walks 25.0° north of east for 3-km. How far would another person walk due north and due east to arrive at the equal location?
Q. A horizontal beam of light enters a 45-90-45 prism at the center of its long side. The emerging ray moves in a direction that is 34 degrees below horizontal. What is the index of refraction?
Calculate the energy density in the electric field. After the collision, the club head travels (in the same direction) at 46 m/s. Find the speed of the golf ball just after impact.
A carbon sample of the same size taken from a fresh piece of bone emits 16 beta emissions a minute. How long ago did the saber-tooth tiger live?
A 78-kg base runner begins his slide into second base when he is moving at a speed of 4.2 m/s. The coefficient of friction between his clothes and Earth is 0.70. He slides so that his speed is zero just as he reaches base.
A uniform plank of length 5.9 m and weight 212 N rests horizontally on two supports, with 1.1 m of the plank hanging over the right support .To what distance x can a person who weighs 443 N walk on overhanging part of the plank before it just begins ..
An aluminium cup of 180 cm3 capacities is totally filled with glycerin at 18° C. How much glycerin (in cubic cm) would spill out of the cup if temperature of both the cup and glycerin is increased to 33° C? (The linear expansion coefficient of alumin..
At a right angle to a magnetic field. The acceleration of gravity is 9.81 m/s2. What is strength of the magnetic field necessary to exactly balance the weight of the proton and keep it moving horizontally.
A Carnot engine performs work at the rate of 380 kW when using 730 kcal of heat per second. If the temperature of the heat source is 560 C, at what temperature is the waste heat exhausted.
A 5 kg fish is swimming at a speed of 1ms swallows a 1.00 kg fish swimming toward it at 4 m/s. The speed of the larger fish after lunch is what.
A damped mass-spring system oscillates at 165 Hz. The time constant of the system is 2.0 s. At t = 0, the amplitude of oscillation is 7.0 cm and the energy of the oscillating system is then 70 J.
If air resistance is negligible, using energy considerations alone, how fast must the ball be going after it falls 200 meters.
What least number of grooves is required for a grating
A block M1 of mass 16.50 kg sits on top of a larger block M2 of mass 26.50 kg which sits on a flat surface. The kinetic friction coefficient between upper and lower block is 0.405. The kinetic friction coefficient between the lower block and the f..
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