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Q. What is the highest speed with which a 1550 car can round a turn of radius 76 on a flat road if the coefficient of static friction between tires and road is 0.50?
Q. The membrane surrounding the living cell consists of an inner and an outer wall that are separated by a small space. suppose that the membrane acts like a parallel plate capacitor in which the effective charge density on the inner and outer walls has a magnitude of 6.90 10-6 C/m2. What is the magnitude of the electric field within cell membrane? Find out the magnitude of the electric force that would be exerted on the potassium ion (K+; charge = +e) placed inside the membrane.
A moon orbits a planet because of the gravitational force between them. Similarly, each body also experiences a tidal force due to gravity. Consider how the magnitude of the tidal force changes as distance between a planet and moon varies.
The electric field 5.90 from a very long charged wire is ( 2300 ,toward the wire).What is the charge (in nC) on a 1 cm-long segment of the wire.
A uniform diving board, 12m long and 20kg mass is placed on a platform. How far can a 60kg person walk down the board from the edge of the platform without board tipping over.
A child and sled with the combined mass of 60.4 kg slide down a frictionless hill. If the sled starts from rest and has a speed of 13.4 m/s at the bottom, what is the height of the hill.
The gravitational force exerted on a baseball is 2.23 N down. A pitcher throws the ball horizontally with velocity 14.5 m/s by uniformly accelerating it along a straight horizontal line for a time interval of 169 ms. The ball starts from rest.
The locomotive is moving at 25 km/h. The engineer of the high speed train immediately applies the brakes. What must be the magnitude of the resulting constant deceleration if a collision is to be just avoided.
The edge of a cube consist of equal resistors of resistance R, that are joined at the orners, let a battery be connected to two opposite corners of a face of cube. what is the efective resistance.
At a distance rl from point charge the magnitude of the electric field created by charge is 248 N/C. After a distance r2 from the charge, field has a magnitude of 132N/C. Find ration r2/r1.
A ball rolling along at speed v without slipping on a horizontal surface while it comes to a hill that rises at a constant angle above the horizontal.
Find the magnitude of the electron acceleration. Under an influence of its drive force, a snowmobile is moving at a constant velocity along a horizontal patch of snow. When the drive force is shut off, the snowmobile coasts to a halt.
A box is put on a slide to move it from one part of a factory to another the slide is at an angle of 20 degrees below the horizontal the coefficient of friction between the box and slide is 0.352 what is the acceleration of the box.
The triangular loop of wire in the drawing carries a current of I= 6.91 A. A uniform magnetic field is directed parallel to the side AB of the triangle and has a magnitude of 2.77 T.
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