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Answer the following question, include free body diagrams and state any formulas used
A block of mass 35 kg is on a flat floor with a static friction coefficient of 0.36 and a kinetic friction coefficient of 0.29. A person attempts to slide the box from rest in a forward direction. Find the maximum frictional force experienced and the acceleration of the box once it is moving if:
a) the person pushes horizontally with 120 N.
b) the person pushes at an angle with a 25 N vertical component directed down and a 200 N horizontal component of the push directed forward.
c) the person pulls with 120 N on a rope up angled 30° up from the horizontal.
Through a thunderstorm, 3.8 s elapses between observing a lightning flash and hearing the resulting thunder. About how far away in kilometres and miles was the lightning flash?
If a student plays a white key on the keyboard and it has a frequency of 395 Hz, what will be the most likely frequency of the next black key
You throw a ball toward a wall at speed 39.0 m/s and at angleθ0 = 37.0° above the horizontal (Fig. 4-35).The wall is distance d = 19.0 m from the release point ofthe ball.
Ben lets his toys slide down a 1.5m ramp at a 45 degree angle in a wooden box. The box starts out at rest, and speeds up as it goes down. Ben finds the acceleration to be 3.4 m/s^2.
An aluminum rod is 17.0 cm long at20°C and has a mass of 350 g. If 14000 J of energy is added to the rod by heat, what is the change in length of the rod
A 95 kilogram scaffold is 7 meter long. It is hanging with two wires, one from each end. Find the tension in the right hand side wire
A bicycle wheel, 65 cm across, is half buried in dirt, standing on edge. What was the beetle's average velocity and speed from the time it started climbing until it hit the ground
A solid cylinder with a mass of 266 kg and radius 0.070 m is rotating with an angular speed of 88.0 rad/s about an axis passing through its center and perpendicular to its end faces. The rotation of the cylinder is slowed down by a factor of 2 by ..
An object is in front of a converging lens (f = 0.370 m). The magnification of the lens is m = 3.60. Through what distance should the object be moved
a fire hose ejects a stream of water at an angle of 32.8 degrees above the horizontal. the water leaves the nozzle with
Given that the London dispersion interaction between two atoms or molecules has that general form \(V(r)= -(3/2)
If a toaster is plugged into a source of alternating voltage with an rms value of 66.2 V, find the resistance of the toaster's heating element
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