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In a head-on collision, a car stops in 0.30{\rm s} from a speed of 30{\rm m}/{\rm s} . The driver has a mass of 80{\rm kg} , and is, fortunately, tightly strapped into his seat. What force is applied to the driver by his seat belt during that fraction of a second?
A rocket ship at rest in space gives a short blast of its engine, firing 90 kg of exhaust gas out the back end with an average velocity of 700 m/s.
You are given a spherical mirror and wish to determine its properties. You place an object on its axis, Find the mirror\'s focal length
In coming to a stop, a car leaves skid marks 77m long on the highway. Assuming a deceleration of 8m/s2, estimate the speed of the car just before braking.
A wire has a mass per unit length of 0.500 g/cm. what is the magnitude and direction of the minimum magnetic field
Two indentical spaceships are travelling in the same direction. an observer on earth measure the first to have a speed of 0.80c, what is the speed of second spaceship
a thin double convex lens is to focus the image of an object onto a screen so that the image is life sized. how far is the screen from the object
A car makes a round trip for 100m in 10 seconds. What is the average velocity?
What is final total energy of the system
A plate carries a charge of -3.9 µC, while a rod carries a charge of 2.9 µC. How many electrons must be transferred from the plate
A clay vase on a potter's wheel experiences an angular acceleration of 7.70 rad/s2 due to the application of a 10.7-N · m net torque
Ligh of wavelength 610 nm is incident on a slit 0.20 mm wide, what is the width of the central maximum
Water flows at a rate of 26L/min through a horizontal 8.0 cm diameter pipe under a pressure of 9.2 PA. What is the pressure at this point
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