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A 2500 kg car rounds a flat curve of radius 75 m at speed of 80 km/h.
a) will the car make the turn or will it skid off the rouad if the pavement is dry and the force of static friction from the tires is 14000 n ? prove it.
b) if the pavement is icy and the force of static friction is 6000 n, what is the maximum speed the car could safely go around the curve?
An air-track glider attached to a spring oscillates between the 12.0cm mark and the 63.0cm mark on the track. What is the maximum speed of the glider
A thin metallic spherical shell of radius 41.6 cm has a total charge of 8.05 ?C uniformly distributed on it. At the center of the shell is placed a point charge of 2.83 C. What is the electric field at a distance of 23.9 cm from the center of the ..
The electric field at a distance of 0.148m from the surface of a solid insulating sphere with radius 0.367m is 1690N/C, Calculate the electric field inside the sphere at a distance of 0.217m from the center
A 40g block of ice is cooled to -78 deg celcius and is then added to 560g of water in an 80g copper calorimeter at a temperature of 25 degrees celcius, determine how much ice is left
There is evidence that elephants communicate via infrasound, Determine the intensity level of the infrasound 10 km from the source, assuming the sound energy radiates uniformly in all directions
A child loses his balloon, which rises slowly into the sky. If the balloon is 23 cm in diameter as the child loses it, what is its diameter at the following altitudes? Assume that the balloon is very flexible and so surface tension could be neglec..
A jetliner is moving at a speed of 216 m/s. The vertical component of the plane's velocity is 79.70 m/s. establishes the magnitude of the horizontal component of the plane's velocity.
Photons of wavelength 490 nm are incident on a metal. What is the work function of the metal
As an energy-efficiency consultant, you're asked to assess the pumped-storage facility. Its reservoir sits 136 above its generating station and holds 9.0×10^9 of water. The power plant generates 315 of electric power while draining the reservoir over..
A parallel-plate capacitor has an area of 2.0cm^2, and the plates are separated by 2mm.
A cell membrane is composed of lipid molecules and is approximately 18 nm thick, what is the approximate capacitance of a spherical cell that has a diameter of 20 m?
A nut is held in the jaws of a pair of pliers. The nut is 25 mm from the pivot of the pliers and a force of 10 N is applied to each handle 150 mm from the pivot
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