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At t = 0 a block with mass M = 5 kg moves with a velocity v = 2 m/s at position xo = -.33 m from the equilibrium position of the spring. The block is attached to a massless spring of spring constant k = 61.2 N/m and slides on a frictionless surface. At what time will the block next pass x = 0, the place where the spring is unstretched?
A cylinder of mass M=30 kg and radius R=2m rolls without slipping. What is the acceleration of the center of the cylinder
A 50 kg projectile is fired over level land at an angle of 30 degrees above the horizontal with a muzzle velocity of 210 m/s. How much energy was released during the explosion
A 75-Kg athlete does a single-hand handstand. If the area of thehand in contact with the floor is 125 cm2, what pressureis exerted on the floor?
A .65 m long pendelum is pulled back to an angle of 45 degreeswith the vertical and released from rest. Calculate the energy lost in this first swing
A 15,000 kg loader traveling east at 20 km/h turns south and travels at 25 km/h. Calculate the change in the loaders
A cell phone system is to provide a 90% call success rate at the cell edge with a location variability of 8 dB. What margin is required? What is the probability of a successful call averaged over an entire cell? Assume the path loss exponent is fo..
An electron of mass 9.11×10?31kg leaves one end of a TV picture tube with zero initial speed and travels in a straight line to the accelerating grid, Find the net force. (You can ignore the gravitational force on the electron)
A slit of width 0.48 mm isilluminated with light of wavelength 464 nm, Find the widths of the first and second maxima on each side of the central maximum
The inner and outer surfaces of a cell membrane carry a negative and positive charge, respectively. What is the magnitude of the electric field in the membrane
Assuming that the human pupil is about 2.6 mm in diameter, determine an approximate minimum distance you need to stand from one of Seurat's paintings to see the dots blended together. (Assume two dots touch, such that their center-to-center distan..
The source of a sound wave has a power of 2.20 µW. Assume it is a point source. What is the sound level at that distance
A light rope 5m long supports a 30kg mass against gravity. What is the mass per unit length of the rope
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