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Question: A man is going to complete a full vertical loop around a post to which a swing is attached. The swing's rope mass is negligible. If the length of the swing's rope is 3m, what is the minimum speed that the man must have at the top of the swing's circular trajectory such that the rope does not collapse? What is the speed of the man at the bottom of the swing's circular trajectory using the man's speed at the top of the swing's trajectory found previously?
A two stage rocket is traveling at 1200 m/s with respect to the Earth when the first stage runs out of fuel. What is the speed of the second stage after separation
A particle of charge +4.31 × 10-6 C is 10.1 cm distant from a second particle of charge -1.95 × 10-6 C. Calculate the magnitude of the electrostatic force between the particles
Calculate the adiabatic flame temperature attained when methane at 298k, is combusted (a) with oxygen in the molar ratio air/CH4 = 9.524. Assume that CO2 and H2O are the products of the combustion. The adiabatic flame temperature is that temperature ..
A single string is made up of two strings of different densities joined together. estimate what is the tension on the combined string
An object 2.6 cm high is placed 15 cm from the surface of a polished silver sphere of radius 11 cm. Find the location, size, and orientation of the image
A wall in a house contains a single window. The window consists of a single pane of glass whose area is 0.14 m2 and whose thickness is 8 millimeter. evaluate what is the percentage lost by the window
How high a tree would a 79.0 kg person have to climb to increase his gravitational potential energy relative to the ground by that amount.
A baseball is thrown upwards at a 45o angle with respect to the ground. Its initial speed is 25 meter per second. Determine how high above its starting point will it reach
A child's sled has rails that slide with little friction across the snow. Logan has an old wooden sled with heavy iron rails that has a mass of 11 m/s quite a bit for a 27 kg child! Logan runs at 4.0 m/s and leaps onto the stationary sled and hold..
A small glass bead has been charged to +19 nC. A metal ball bearing 1.0 cm above the bead feels a 0.025 N downward electric force
A camera lens has a focal length of 215 mm, How far from the lens should the subject for the photo be if the lens is 21.9 cm from the film
at an amusement park there is a ride in which cylindrically shaped chambers spin around a central axis. people sit in
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