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Q1. A block is placed at the end of the frictionless ramp and is pulled up the ramp through a solid ball on the end of a string that passes over a frictionless pulley that does not affect the motion of the block or ball. The ramp is 3.40 meters long and has an angle of incline of 20.0° with the horizontal. The mass of the block is 3.40 kg, while the mass of the ball is 1.40 kg.
A) Draw the free-body diagram for ball and the block in the problem.
B) Establish the magnitude and direction of the acceleration of the system.
Q2. A 35.0-g bullet moving at 445 m/s strikes a 2.4 kg bag of flour that is on ice, at rest. The bullet passes through the bag, leaving at 245 m/s. How fast is the bag moving while the bullet exits?
A potter's wheel having a radius 0.53 m and a moment of inertia of 11.4 kg, determine the effective coefficient of kinetic friction between the wheel and the wet rag
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F = G.Mm/r2 where F is the gravitational force, M and m are masses, and r is a length. Force has the SI units kg · m/s2. What are the SI units of the proportionality constant G
A 5.0micrometer strand of DNA carries +e charge per nm of length. Treating it as a charged line, what's the electric field strength 28 nanometer from the DNA, not near either end
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A 67kg man's arm, including the hand, can be modeled as a 70cm -long uniform cylinder with a mass of 3.5kg. by how much does he raise his center of gravity
A laser pulse has an energy of 15 J and a beam radius of 2 mm. The pulse duration is 11 ns and the energy density is constant within the pulse. What is the spatial length of the pulse
X rays with a wavelength of 0.14 nm undergo first-order diffraction from a crystal at a 70^\circ angle of incidence. What is the angle of second-order diffraction
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