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A10.5kg object oscillates at the end of a vertical spring that has a spring constant of2.45104N/m. The effect of air resistance is represented by the damping coefficientb= 3.00 N·s/m.
(a) Calculate the frequency of the dampened oscillation. Hz
(b) By what percentage does the amplitude of the oscillation decrease in each cycle? %
(c) Find the time interval that elapses while the energy of the system drops to3.00%of its initial value. s
The x and y components of a vector A are -25.0 m +40.0 m. respective y. What is the angle between the direction of A and positive direction of x?
A farsighted person has a near point located 210 cm from the eyes. Find the focal length of the converging lenses in a pair of contacts that can be used to read a book held 25 cm from the eyes.
A man pushes a lawn mower on a level lawn with a force of 186 N. If 35 percent of this force is directed downward, how much work is completed by the man in pushing the mower 6.5 m.
The distance between the objective and eyepiece is 12.3 cm. If a blood cell subtends an angle of 2.1 x 10-5 rad when viewed with the naked eye at a near point of 25.0 cm, what angle (magnitude only) does it subtend when viewed through the microscop..
A frictionless pulley has the shape of a uniform solid disk of mass 6.00 and radius 28.0 . A 2.70stone is attached to a very light wire that is wrapped around the rim of the pulley(Figure 1) , and the stone is released from rest. As it falls down,..
What is the approximate mass of the cat.
determine the resultant displacement graphically.what is the magnitude of repulsive force pushing these two spheres apart.
A crown glass lens (n = 1.52) has an optical power of 4.0 d in air. What is its power in carbon tetrachloride (n = 1.461)
How fast must an electron move to have a kinetic energy equal to the energy of a photon of wavelength (l = 600 nm)?(The energy of the electron is assumed to benon-relativistic)
A speeder is pulling directly away and increasing his distance from a police car that is moving at 29 meter per second with respect to the ground. Obtain the speeder speed with respect to the ground
The left end of a long glass rod 7.00cm in diameter has a convex hemispherical surface 3.50cm in radius. The refractive index of the glass is 1.60. How far from the left end of the rod must the object be located to form the image
A 7.00 kg bowling ball collides head-on with a 2.00 kg bowlingpin, which was originally at rest. The pin flies forward with aspeed of 3.00 m/s. what was the initial speed of the ball
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