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A very light spring of equilibrium length 10.0 cm is hung from the ceiling with a 0.40 kg block at its end. When the block settles, the spring is 15.0 cm long. The same block-and-spring system is then set up horizontally on the floor, with the free end of the spring attached to a wall. The block is pulled 16.0 cm from the wall and released from rest. It slides with negligible friction. Find the block's distance from the wall 0.35s after it was released from rest, at 16.0 cm from the wall.
A 51kg crate, starting from rest, is pulled across a floor with a constant horizontal force of 250N. For the first 10.5m the floor is frictionless, and for the next 10.5m the coefficient of friction is 0.18. What is the final speed of the crate af..
A charge of 26.0 nano coulombsis placed in a uniform electric field that is directed vertically upward and that has a magnitude of 4.00×10^4 N/C
A mail bag with a mass of 100kg is suspended by a vertical rope of length 8.00m. What horizontal force is necessary to hold the bag in a position displaced sideways a distance 1.00m from its initial position
At a temperature of 1.66 °C, the mass and volume of a fluid are 798 kg and 1.20 m3. The coefficient of volume expansion is 1.58 x 10-3 (C°)-1. What is the density of the fluid at this temperature
A radio station broadcasts with a power of 50,000 watts. Estimate the average intensity of the wave at a distance of 50 km from the radio transmitting antenna
The "size" of the nucleus in Rutherford's model of the atom is about 1.00 fm = 1.00E-15 m. Determine (in MeV) the electrostatic potential energy of the pair of protons
A satellites are placed in a circular orbit that is 3.64 × 107 m above the surface of the earth. What is the magnitude of the acceleration due to gravity at this distance
An optometrist has a choice to give a pacient either regular glasses or contact lenses to correct nearsightedness. Usually, regular glasses sit a few centimeters in front of the eye and contact lenses right on the eye. What do you think, the power..
Three capacitors C1 = 2.5 µF, C2 = 7.5 µF, and C3 = 13 µF are connected as shown with a battery of voltage V = 18 V. (When entering units, use micro for the metric system prefix µ.) (a) What is the equivalent capacitance of this circuit? (b) What is ..
An electric field of 10.6 N/C directed due north is superposed on an existing electric field of 15.3 N/C directed due east. What is the magnitude of the resultant field
Calculate the magnitude of the planes acceleration. On a level road with its brakes on, a car traveling at 93 km/hr stops within 87 m when the brakes lock and the car slides.
A bowling ball (mass = 7.2 kg, radius = 0.11 m) and a billiard ball (mass = 0.39 kg, radius = 0.028 m) may each be treated as uniform spheres
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