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When an object slides on a? surface, it encounters a resistance force called friction. This force has a magnitude of μ?N, where μ is the coefficient of kinetic friction and N is the magnitude of the normal force that the surface applies to the object. Suppose an object of mass 50 kg is released from the top of an inclined plane that is inclined 60 degrees ° to the horizontal. Assume the gravitational force is? constant, air resistance is? negligible, and the coefficient of kinetic friction μ=0.2.
Determine the equation of motion for the object as it slides down the plane. If the top surface of the plane is 8 m? long, what is the velocity of the object when it reaches the? bottom? Assume that the acceleration due to gravity is 9.81 m divided by sec squared.
The drawing shows a rectangular piece of wood. The forcesapplied to corners B and D have the same magnitude of 12 N and aredirected parallel to the long and short sides of the rectangle. Thelong side of the rectangle is twice as long as the short ..
Light from an argon laser strikes a diffraction grating that has 5320 grooves per centimetre. The central and first-order principal maxima are separated with 0.488 m on a wall 1.88 m from the grating. Decide the wavelength of the laser light.
How many electrons are transferred. What is the smallest thickness of a soap film that would appear black if illuminated with 490 light? imagine there is air on both sides of the soap film.
Due to the nature of the wastewater, the engineer wants to target the high end of this range. Find the proper diameter pipe to the nearest 2” (e.g., 2”, 4”, 6”, 8”, 10”, etc.) to achieve this design objective.
in the rectangle in the drawing a charge is to be placed at the empty corner to make the net force on the charge at
A thin, double convex lens having a focal length of magnitude 27.5 cm is placed 1.000 m from a plane mirror that is oriented perpendicular to the principal axis of the lens. A flower, 8.40 cm tall, is1.450 m from the mirror on the principal axis o..
A boat is to cross a river on a course directed 20.0° north of east in 10 minutes from point A to point B. The distance from point A to point B is 815m. If the river flows at a speed of 3.0 km/hr, at what angle upstream must the boat be headed,..
At a distance of 0.214cm from the axis of a very long charged conducting cylinder with radius 0.100cm, the electric field is 485N/C. What is the electric field 0.580cm from the axis of the cylinder
what must be the distance in meters between point charge q1 27.8 microc and point charge q2 -68.7 microc for the
At 12 breaths/min, on a dry day when the inhaled air has almost no water content, what is the body's rate of energy loss (in J/s) due to exhaled water
Calculate the maximum current delivered by the source. Calculate the phase angle between the current and voltage. Is the current leading or lagging behind the voltage?
An Olympic long jumper leaves the ground at an angle of 19.8 ° and travels through the air for a horizontal distance of 8.17 m before landing. What is the takeoff speed of the jumper
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