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Q. An empty sled of 25kg slides down a muddy hill with a constant speed of 2.4m/s. the slope of the hill is inclined at the angle of 15 degrees. Calculate friction force as it slides down the slope.
Q. An 86 Kg person stands on a uniform ladder 4m long, that weighs 70N. The floor is rough; hence, it exerts both a normal force, and a frictional force, on ladder. The wall, on the other hand, is frictionless; it exerts only the normal force. What are the forces?
Two spherical objects have a combined mass of 200. The gravitational attraction between them is 8.01×10-6 while their centers are 21.0 apart.
What is speed of the resulting ball of clay
What is the total displacement and the angle of displacement
What is the frequency of the small axial oscillations that the electron will undergo if it is free along the z-axis near the origin.
If a car travelling at 63 km/h will skid 18 m when its brakes lock, how far will it skid if it is travelling at 150 km/h while its brakes lock.
A loudspeaker of mass 21.0 {rm kg} is suspended a distance of h = 2.40 {rm m} below the ceiling by two cables that make equal angles with the ceiling. Each cable has the length of l = 3.90 {rm m}.
A grating has 776 lines per centimeter. Find out the angles of the first three principal maxima above the central fringe when this grating is illuminated with 603 nm light.
Coherent light that contains two wavelengths, 660 nm and 470 nm, passes by two narrow slits with a separation of 0.280 mm and an interference pattern is observed on a screen which is a distance 4.40 m from the slits.
A 23 g ball is fired horizontally with initial speed toward a 110 g ball that is hanging motionless from a 1.1m long string. The balls undergo a head on, perfectly elastic collision, after which the 110 g ball swings out to a maximum angle theta m..
Suppose a chimpanzee swings through the jungle on vines. If it swings from a tree on a 13 m long vine that starts at an angle of 45 degrees, what is the chimp's velocity when it reaches the ground.
What are changes in the object's momentum and velocity. How much work is done if the similar tension is directed parallel to the snow.
A photoflash unit makes a very bright light for a very short time. Discuss differences in the exposure of the film with and without a flash unit. Consider the f-stop and shutter speed in your deliberation.
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