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A 1300-{ kg} car rolling on a horizontal surface has speed v = 60km/h when it strikes a horizontal coiled spring and is brought to rest in a distance of 2.2m . What is the spring stiffness constant of the spring?
A 325 kg crate is lowered to the ground by a helicopter. Its fastened to the end of the vertical cable which has a tension of 3500N. Is the crate speeding up, slowing down, or descending at a constant speed? Show your work
The pulley is frictionless and of negligible mass. The coefficient of kinetic friction between mass 1 and teh ramp is 0.25. Evaluate the change in kinetic energy of the 50 kg block as it moves from a to b, a distance of 20 m
A double slit separated by 0.0586 mm is placed 1.55 m from a screen. If blue light of wavelength 415 nm strikes the double slit, what is the separation between the second-order and fourth-order maxima
A 4.0 kg mass is hung vertically from a spring with a spring constant of 510 N/m. It is pulled down from its equilibrium position by 2.0 cmand allowed to oscillate. What are the period and frequency of oscillation
A system consists of two positive point charges, q1 and q2>q1. The total charge of the system is +62.0 x 10^-6 C, Find q1 and q2
The equations for free fall at the surface of Mars and Jupiter (s in meters, t in seconds) are Mars, s = 1.86t^2; Jupiter, s = 11.44t^2. How long would it take an object falling from rest to reach a velocity of 100 km/hr on each planet?
A closed Gaussian surface in the shape of a cube of edge length 2.50 m. It lies in a region where the nonuniform electric field is given by = (3.35x + 4.36) + 6.10 + 7.19N/C
A steel bicycle wheel (without the rubber tire) is rotating freely with an angular speed of 16.4 rad/s. What is the angular speed of the wheel
The plane of a single circular loop with radius 0.1 m is held so the area vector of the loop is facing the North direction. what is the induced EMF in the loop
Four passengers with a combined mass of 300 compress the springs of a car with worn-out shock absorbers by 4.40 when they enter it. what is the period of vibration of the empty car
A mass m1 = 5.3 kg rests on a frictionless table and connected by a massless string to another mass m2 = 5.3 kg. What is the final speed of the two blocks
A typical scuba tank has a volume V of 10 liters. When fully charged, it contains compressed air at a pressure of 200 bars, or 2.0 x 10^7 Pa. What is the uncompressed volume of the air
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