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A block of mass 47 kg starts at rest at the top of a frictionless ramp that makes an angle of 33.4° below the horizontal. After it slides without friction down the entire 3.38 m length of the ramp, it begins to slide horizontally along a rough concrete surface with a coefficient of kinetic friction of μ?k?? = 0.681 until it slows to a complete stop. How far does the block slide horizontally along the concrete before it stops? [Note: this question may contain more information than is necessary to solve the problem.]
Two 85 Watt (120 Volt) light bulbs are wired in series, and then the combination is connected to a 120 Volt supply. Find how much power is dissipated by each bulb
A highway curve with a radius of 555 m is banked properly for the car travelling 150 km/h. If a 1650 kg Porshe 928 S rounds the curve at 220 km/h, how much sideways force must the tires exert against the road if the car does not skid.
The string connecting the m1 and the m2 passes over a light frictionless pulley. Find the downward acceleration of m2 mass.
An experimental bicycle wheel is placed on a test stand so that it is free to turn on its axle. If a constant net torque of 5.00 N · m is applied to the tire for 3.00 s, Compute the friction torque
If you pour 0.0100 kg of 20C water onto a 1.20kg block of ice which is initially -15C what is the final temperature
A point charge q of mass m is held a distance from an infinite grounded conducting plane. There is no gravitation. When released, the charge starts to move toward the plane. What is the charge velocity when it hits the plane?
Eight books, each 3.90 cm thick with mass 1.70 kg, lie flat on a table. How much work is required to stack them on top of each other.
An electron in the beam of a typical television picture tube is accelerated through a potential difference of 20,000 V before it strikes the face of the tube. What is the speed of the electron?
a French submarine and a U.S. submarine move toward each other during maneuvers in motionless water in the North Atlantic. What frequency is detected by the French sub in the signal reflected back to it by the U.S. sub
You shoot a 45 gram pebble straight up with a catapult whose spring constant is 320 N/m. The catapult is initially stretched by 0.20 meter. Find how high above the starting point does the pebble fly
What is the difference between a gibbous moon and a crescent moon? The Moon changes phase every how many days? What is the difference between an umbra and a penumbra?
A diffraction grating has 3107 lines/cm. Light that contains all wavelengths between 420 and 656 nm shines on the grating. Calculate the width of the dark
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