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A car is traveling over a hill. If, using a Cartesian coordinate system with origin O at the top of the hill, the hill;s profile is described by the function y = -(.003m^-1)x^2, where x and y are in meters, determine the minimum speed at which the car would lose contact with the ground at the top of the hill. Express answer in km/h.
An object 2.7 cm high is placed 19 cm from the surface of a polished silver sphere of radius 13 cm. Find the location, size, and orientation of the image
The potential difference between the ends of a resistor is 9 V and the rate of energy dissipation in it is 18 W. What is the value of that resistor
The system pictured below consists of two blocks of mass m connected via springs to two walls. The springs all have spring constant k. Write the equations of motion for this system. Use as your variables the displacement of each block from its res..
An audio amplifier, represented by the AC source and the resistor R, delivers alternating voltages at audio frequencies to the speaker. what is the average power input into the speaker
A woman of massm=50.1kg sits on the left end of a seesaw-a plank of lengthL=3.99m-pivoted in the middle, Find the normal force exerted by the pivot if the plank has a mass ofmpl=10.2kg
The distance between two telephone poles is d = 52.0 m. How much tension does the bird produce in the wire
aircraft has cross section of 710 m^2, what percentage of radiated energy will be detected
The pilot of an airplane notes that the compass indicates a heading due west. The airplane's speed relative to the air is 200 km/h. find the velocity of the airplane relative to the ground
A student is standing on a ladder as shown in the figure to the right. Each leg of the ladder is 2.7 m long and is hidged at point C. What is the tension in the tierod
A flat, uniform, circular disk (R = 2.25 m, m = 84.0 kg) is initially at rest, but it is free to rotate in the horizontal plane about a vertical, frictionless axis through its center.
The coeffiecient of static friction between Jimmy's hand and his tennis racket is 0.45. How hard must he squeeze the racket if he wants to exert a force of 200 N along the longitudinal axis of the racket
What is the bulk modulus of a fluid in which 2 kg occupies 10-3 m3 of volume and the speed of sound in the fluid is 1900 m/s
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