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A Ferris wheel rotates at an angular velocity of 4.5×10−2 . At your friend Seth is at the very top of the ride. What is Seth’s angular position at = 3.2 measured counterclockwise from the top? Give your answer as an angle in degrees between 0 and 360 degrees.
A spring has an unstretched length of 12cm. When an 80 g ball is hung from it, the length increases by 4.0 cm.Then the ball is pulled down another 4.0 cm and released. a) What is the spring constant? b) What is the period of the oscillation?
For a spring-mass oscillator, if you triple the mass but keep the stiffness the same, what numerical factor does the period change? That is, if an original period was T and the new period is bT, what is b? It is useful to write out the expression ..
Team B is pulling on a rope attached to the same anvil with the same force but in direction of 32 degrees S of E. What is the initial acceleration of the anvil.
A space traveller whose mass is 115 kg leaves earth. What are his weight and masson earth and in interplanetary space where there are no nearby planetary objects.
What current is in the primary circuit. A proton moves at a speed of 8.0 103 m/s as it passes through a magnetic field of 0.55 T. Find the radius of the circular path. Note down that the charge carried by the proton is equal to that of the electron..
Suppose that 1.05 108 J of this energy flows directly into the surroundings (engine block and exhaust system) in the form of heat. If 6.0 105 J of work is required to make the car go one mile, expalin how many miles can the car travel on one ga..
If John Glenn weighed 640N on Earth's surface, i) how much would he have weighed if his Mercury spacecraft had (hypothetically) remained at twice distance from the center of the Earth? ii) Why is it said that an astronaut is never truly weightless..
What is the angular frequency in rev/s of combination.
Burning a pound of coal produces about 13,000 Btu of energy. How many megajoules of energy are produced by burning 4 pounds of coal?
Would a plucked guitar sting vibrate for a longer time or a shorter time if the instrument had no sounding board? explain.
A box slides down a 22° ramp with an acceleration of .92m/s2. Determine out the coefficient of kinetic friction between the box and the ramp.
A 1200 N uniform boom is supported by a cable perpendicular to the boom, as in Figure P8.28. The boom is hinged at the bottom, and a 2000 N weight hangs from its top. Find out the tension in the supporting cable and the components of the reaction ..
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