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a 1.99 kg block slides on a rough, horizonatl surface. The block hits a spring with a speed 2.16 m/s and compresses it a distance of 10.9 cm before coming to rest. If the coefficient of kinetic friction between the block and the surface is .590, what is the force constant of the spring?
A pot containing 1.01 liter of water, initially at 19°C, is placed on a 1051 W electric heating element. How much heat is necessary to boil all the water away
The sound intensity in front of a loudspeaker diaphragm vibrating at 2kHz is 4.3 W/m^2, with an acoustic power output of 0.3W. Calculate the diameter of the diaphragm. in cm
A -10.0 nC point charge and a +20.0 nC point charge are 15.0 cm apart on the x-axis. What is the direction of the electric field at the point on the x-axis, between the charges, where the electric potential is zero
A coiled telephone cord forms a spiral with 56 turns, a diameter of 1.30 cm, and an unstretched length of 60.0 cm. Determine the self-inductance of one conductor in the unstretched cord.
Three resistors, 21, 39, and 73 , are connected in series, determine the potential difference across the three resistors
A 1.30 x10^3kg racecar is driving around a circular track of radius 159 m. What is the magnitude of the net force acting on the vehicle at this time and the force\'s direction relative to the velocity
A 150 kg hoop rolls along a horizontal floor so that the hoop's center of mass has speed of 0.180 m/s. How much work must be done on the hoop to stop it.
A flat circular coil with 102 turns, a radius of 3.92 10-2 m, Find the magnitude of the magnetic field at the center of the coil that is produced by the induced current
A small sphere with mass 2.60g hangs by a thread between two large parallel vertical plates 5.00cm apart. What potential difference between the plates
A flower pot falls from the roof and passes in front of a window of height h as it falls to the ground to smash to pieces. If the flower pot takes a time T to pass from top to bottom in front of window. Find the (as-yet-unknown) height H from the ..
A drag racer starts from rest and accelerates for 12.3 s with a constant acceleration until it has travelled 400 m. What is the stopping distance for the drag racer
A spherical balloon containing oxygen gas has a radius of 13.2 cm. what is the mass of oxygen in the balloon
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