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Q. A 5 kg box block is pushed 3 m up a vertical wall with constant speed by a constant force of magnitude F at an angle of 60 degrees with the horizontal. If the coefficient of kinetic friction between the box and the wall is 0.30. Find out the work done by (1) force F (2) gravity (3) normal force between the block and the wall
Three pendulums with strings of the same length and bobs of the same mass are pulled out to angles q1, q2 and q3 respectively and free. The approximation sin q = q holds for all three angles, with q3 > q2 > q1. How do the angular frequencies of th..
what most height above the ground will the rocket achieve.
Two cicadas, Chirpy and Milada, jump from the top of a vertical cliff. Chirpy just drops and reaches the ground in 3.10 , while Milada jumps horizontally with an initial speed of 98.
An electron with initial velocity v0 = 1.20 × 10^5 m/s enters a region 1cm long where it is electrically accelerated. It emerges with velocity v = 5.87 × 10^5 m/s. What is its acceleration, assumed constant? (Such a process occurs in conventional ..
A bullet of mass 0.0022 kg initially moving at 503 m/s embeds itself in a large fixed piece of wood and travels 0.71 m before coming to rest. Assume that the acceleration of the bullet is constant.
What is the final speed of the crate after being pulled. On a very muddy football field, a 100 linebacker tackles an 80 halfback. Immediately before the collision, linebacker is slipping with a velocity of 8.5 north and the halfback is sliding with..
Light is incident on a slit 0.750 mm wide. On a screen 2.00 m away, the distance from the central maximum to the first minimum is 1.35 mm. compute the wavelength of the light.
A wheel rotating about a fixed axis through its center has a constant angular acceleration of 4 rad/s^2. In cerain 4s interval the wheel turns through an angle of 80 rads.
Explain how Gestalt psychologists understand perceptual organization, including the discussion of form perception, depth perception, and perceptual constancy.
A diver of weight 780 N stands at the end of a diving board of length L = 5 m and negligible mass. The board is fixed to two pedestals separated by distance d = 1.5 m
What shape would you expect the sampling distribution of x bar for n=84 juveniles to have? Does your answer depend on shape of the distribution of verbal IQ scores for all juveniles.
Two ants race across a table 73cm. long. One travels at 4.18cm/s and the other at 3cm/s. When the first one crosses finish line, how far behind is the second one.
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