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A box slides across a frictionless floor with an initial speed v = 3.4 m/s. It encounters a rough region where the coefficient of friction is µk = 0.5.
a) What is the shortest length of rough floor which will stop the box?
b) If instead the strip is only 0.47 m long, with what speed does the box leave the strip?
A motorist drives south at 28.0 m/s for 3.00 min, then turns west and travels at 25.0 m/s for 2.20 min, find the average velocity and degree south of west
A particle moves along the x-axis. Its position varies with time according to the expression x(t) = -4t + 2t2, where x is in meters and t is in seconds. a) Determine the displacement of the particle in the two time intervals t = 0 to t = 1 s and t..
A particular organic molecule forms an electric dipole by possessing an effective charge separation of 0.177 nm for a pair of ±1.60 × 10-19-C charges. (a) What is the magnitude of the molecule's electric dipole moment?
How high is the sun above the horizon to a fisherman. What is the coefficient of kinetic friction between tires and pavement.
Two tugboats pull a disabled supertanker. Each tug exerts a constant force of 2.10×106N , one at an angle 10.0? west of north, What is the total work done by the two tugboats on the supertanker
What is an average velocity of the train throughout run
A stone is thrown upward with an inital speed of 20 m/s. What is its acceleration at the higest point of its trajectory, Find its veolocit
Each of two small spheres is positively charged; the combined charge totals 60.0 nC. A.) What is the charge on each sphere if the spheres are repelled with a force of magnitude 0.270mN when placed 0.100m apart?
Two identical carts travel at 1m/s in opposite directions on a common horizontal surface. They collide head-on and are reported to rebound, each with the speed of 2m/s.
A small immersion heater can be used in a car to heat a cup of water for coffee or tea. suppose the manufacturer's claim of 60% efficiency.
A sphere, a solid cylinder and a thin-walled hollow cylinder all have the same mass and radius. Which one reaches the bottom of the incline first
Two protons are released from rest, one from location 1 and another from location 2. When these two protons reach location 3, what is the electric potential at location 3
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