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A 1150 kg car rolling on a horizontal surface has speed v = 50 km/h when it strikes a horizontal coiled spring and is brought to rest in a distance of 2.2 m. What is the spring stiffness constant of the spring?
A heart defibrillator delivering 400 J of energy by discharging a capacitor initially at 10,000 V has a capacitance of 8.00 µF, What is the voltage of the second defibrillator
A satellite, mass of satellite=5850kg, is in circular orbit of 4.1x10^5m above the surface of aplanet, which has a radius of 4.15x10^6m. calculate the tangential velocity of the satellite
question a rock is tossed off the top of a cliff of height 34.5m. its initial speed is 29.1ms and the launch angle is
A 2.0{\rm mm} -diameter ball bearing has 3.0×109 excess electrons. What is the ball bearing's potential
A plane is sitting on a runway, awaiting takeoff. On an adjacent parallel runway, another plane lands and passes the stationary plane at a speed of 45m/s. For how long a time is the moving plane visible
A violin string 15.2 cm long and fixed at both ends oscillates in its n = 3 mode. The speed of waves on the string is 273 m/s, and the speed of sound in air is 348 m/s. What are (a) the frequency and (b) the wavelength of the emitted sound wave?
determine the properties required amp show your work.substance given
A uniform magnetic field of magnitude 1.00 T is directed perpendicular to the plane of a rectangular loop having dimensions 8.1 cm by 10 cm
If 40.7 kW is to be transmitted to consumers over two 0.107 %u2126 lines, estimate how much power is saved if the voltage is stepped up from 115 V to 1150 V
Two plastic semicircular rods are arranged into a complete circle with radius 8.5cm. The top half has charge of +15 pC, and the bottom half has charge of -15pC. Determine the magnitude and direction of the electric field at the center of the circl..
A reflecting telescope has a main mirror with fM = 620 mm. If an eyepiece with a magnification of 15 is used, what is the total magnification of the telescope
i am not sure how to began or even attempt this problem "aroler coaster car moves 200ft and than rises 135ft an angleof 30.0 degrees above the horizontal. what is its displacement from its starting point
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