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1. If a ball is attached to a string and is spun in a vertical circular motion of constant velocity, at which point in the trajectory is the string more likely to break? Why?
2. Bob and Sue are on skateboards facing each other. Bob weighs twice as much as Sue. Bob pushes Sue with a force F. Determine what will likely occur? (i.e. will Bob move, if yes what will his velocity be in comparison to Sue's velocity?)
What multiple of the time constant τ gives the time taken by an initially uncharged capacitor in an RC seriescircuit to be charged to 97.6% of its final charge?
a car weighs 1,725 kg and is speeding on I-75 at 90 miles per hour. The brake rotors are made of 20 kg of iron and steel composite. What is the temperature change in the rotors
Miranda, a satellite of Uranus, is shown in part a of the figure below. It can be modeled as a sphere of radius 242 km and mass 6.68 1019 kg. What is his vector impact velocity
You want to photograph a circular diffraction pattern whose central maximum has a diameter of 1.1. How far behind the pinhole should you place the viewing screen
A baseball is thrown horizontally off a cliff at 17 m/s. How far from the base of the cliff will the baseball hit the ground? The cliff is 81 m high
A real ammerter has non-zero resistance, and so acts like aresistor in a circuit. One ammerter has resistance 0.5Ω. Whenit is placed across a battery (with emf ε and internalresistance r), the terminal voltage of the battery is 5.0V.
An archer pulls her bowstring back 0.420 m by exerting a force that increases uniformly from zero to 220 N. How much work is done in pulling the bow
A flight attendant pulls her 72-N flight bag a distance of 265-m along a level airport floor at a constant velocity. The force she exerts is 44-N at an angle of 57° above the horizontal.
In coming to a stop, a car leaves skid marks 76 m long on the highway. Assuming a deceleration of 6.50 m/s2, estimate the speed of the car just before braking. Express in m/s.
Three people pull simultaneously on a stubborn donkey. Jack pulls directly ahead of the donkey with a force of 81.7 N, Find the magnitude of the net force the people exert on the donkey
A crate of eggs is located in the middle of the flat bed of a pickup truck as the truck negotiates an unbanked curve in the road. how fast can the truck be moving without the crate sliding
An experimental package and its support structure which are to beplaced on board the International Space Station act as anunderdamped spring mass system with a force constant of2.1x106 N/m and mass 108 kg. Does this package meet the requirement
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