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Compute all parts of given question:
Question: A car is moving with a speed of 27 m/s down a long, straight road. When it is 130 m from a traffic light, the light turns red.
Part A: With what constant acceleration must the car move in order to stop at the light?
Part B: How long does it take the car to stop?
Please show me how you solve the question.
Each square centimeter of the surface of an infinite planesheet of paper has 2400000 excess electrons. Find the magnitude ofthe electric field at a point which is 4 cm from the surface of the sheet.
A person stands on a bathroom scale in a motionless elevator. When the elevator begins to move, the scale briefly reads only 0.82 of the person's regular weight, Find the direction of the acceleration
A pendulum hangs from an inclined wall. Suppose that this pendulum is released at an initial angle of 10 degrees and it bounces off the wall elastically when it reaches an angle of -5 degrees
A steel rod is 3 cm in diameter at 25 C. A brass ring has an interior diameter of 2.992 cm at 25 C. At what common temperture will the ring just slide into the rod?
Unpolarized light of intensity I0 is incident on three polarizing filters. The axis of the first is vertical, that of the second is 36° from vertical, What light intensity emerges from the third filter
The aurora is caused when electrons and protons, moving in the earth's magnetic field of ?5×10?5 T, collide with molecules of the atmosphere, find Radius of the electron and proton in m
It takes 180 Joule of work to compress a certain spring 0.18 meter. Estimate what the force constant of the spring
When unpolarized light is incident on a polarizer-analyzer pair, 37% of the original light intensity passes the analyzer. What is the angle between the transmission axes of the polarizer and analyzer
Two metal spheres, each of mass 14 g and initially at rest, are dropped from a height of 6 m in an evacuated chamber. One sphere has a charge of +50 ?C, and the other has a charge -50 C.
A charged isolated metal sphere of diameter 24.0 cm has a potential of 7400 V relative to V = 0 at infinity. Calculate the energy density in the electric field near the surface of the sphere.
A 7.0cm--diameter disk emits light uniformly from its surface. 20cm from this disk, along its axis, is an 9.0cm--diameter opaque black disk; the faces of the two disks are parallel. find the diameter of the completely dark part of this shadow
A harmonic wave on a string with mass per unit length 0.065 kg/m and a tension of 71.0 N has an amplitude of 6.9 cm. find the average power propagated along the string
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