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An 11.0 m, 230 N uniform ladder rests against a smooth wall. The coefficient of static friction between the ladder and the ground is 0.65, and the ladder makes a 50.0° angle with the ground. How far up the ladder can an 790 N person climb before the ladder begins to slip?
The distance between the first and fifth minima of a single-slitdiffraction pattern is 0.25 mm withthe screen 50 cm away from the slit,when light of wavelength 477 nm isused. Calculate the angle of the firstdiffraction minimum
A pinecone falls straight down from a pine tree growing on a 20 degree slope. What are the components of the pinecone's impact velocity parallel and perpendicular to the ground
A modern sculpture has a large horizontal spring, with a spring constant of 276 N/m, that is attached to a 51.0-kg piece of uniform metal at its end, By how much has the spring stretched
An electron has a de Broglie wavelength ? = 7.0×10?10m, What voltage was needed to accelerate it to this speed and What is its speed
Two identical diverging lenses are separated by 13 cm. The focal length of each lens is -8.4 cm. Determine the final image distance relative to the lens
An electromagnetic doorbell has been constructed by wrapping 66 turns of wire around a long, thin rod, What is the magnitude of the angular velocity of the rod
a single slit 820 nm wide is illuminated with light of wavelength 555 nm. what is the angular width of the central
A beam of light is traveling in air and strikes a material. The angles of incidence and refraction are 58.8°, Obtain the speed of light in the material
A conducting sphere carrying a charge ‘q' has a radius ‘a'. It is inside a concentric hollow conducting sphere of inner radius ‘b' and outer radius ‘c'. What is the charge on the outer surface
The classroom has a volume of about 100 m3. The pressure is atmospheric and the temperature is 75 ºF. What is the rms speed of the oxygen molecules
A physics major is working to pay his college tuition byperforming in a traveling carnival. what is the magnitude of the normal force exerted on the motorcylce by thesphere at this point
youre driving down the highway late one night at 20 ms when a deer steps onto the road 35 m in front of you. your reac-
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