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An air track like the one shown in Figure 4-2 has a block with a height h = 12.0 cm under one support. The other support is 3.50m away. What is the angle of inclination y? According to Equation 5, the component of acceleration parallel to the track is a = g sin y where g = 9.80 m/s2. For this value of y what is a? Show your work.
A ghost leaves a thin slime of ectoplasm (n=1.8) on a puddle of water (1.33). When looking down with light shining on the puddle, What is a possible thickness of the slime
Assume your eyes are located 16 cm below the top of your headand 172 cm above the bottom of your feet. You are standing 200cm in front of vertical wall. What is the length of the shortest mirror that can be hung on the wall to enable you tosee your..
A piece of nichrome wire is embedded into a 1-kg block of ice at -10°C. How long will it take to separate the wire from the ice
the position of an object moving in a straight line is given by x= 5+3.0t - 40t^2 -20t^3, where x is in meters and t in seconds. a)What is the position of the object at t=1,2,3 and 4 s
An 8.70kg block slides with an initial speed of 1.84 m/s down a ramp inclined at an angle of 28.2 with the horizontal. find the distance the block slides before coming to rest
an automobile tire is pumped up to a gauge pressure of 2.0 x 105 pa when the temperature is 27 degc. what is its gauge
a 15 kg hoop of radius 1 m is spinning at a rate of 4 rotations per second, What is the speed in rotations per minute
An astronaut returning to Earth after a long trip is cruising earthward at 7.12×107m/s. At what speed does the package reach Earth
A 12-kg box is free from the top of an incline that is 5.00m long and makes an angle of 40 degrees to the horizontal. A 60-N friction force impedes the motion of the box.
150g of steam at 100C (373K) is injected into a container containing 250g of ice and 150g water both at 0C (273K). What is the change in entropy of the environment
a string with linear mass density of 0.141 kgm is under a tension of 103 n. how much power must be supplied to the
Two point sources of light are separated by 4.5 cm. As viewed through a 15 μm diameter pinhole, what is the maximum distance from which they can be resolved if red light ( λ = 690 nm) is utilized?
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