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A 100 kg person is 3/4 three fourths of the way up a 10 meter ladder that is resting against a smooth friction less wall. The ladder has a mass of 25 kg and creates an angle of 60o with the surface
1. Compute the normal force of the wall on the ladder?
2. Compute the normal force of the floor on the ladder?
two isotopes of carbon carbon-12 and carbon-13 have masses of 19.93 10-27 kg and 21.59 10-27 kg respectively. these two
An electron is accelerated from rest by a potential differenceof 350V. evaluate the radius of its path in the magnetic field
A 1-cm-thick layer of water stands on a horizontal slab of glass. A light ray in the air is incident on the water 60 degrees from the normal. what is the ray's angle from the normal
A 40.0 kg wagon is towed up a hill inclined at 17.3° with respect to the horizontal. How fast is the wagon going after moving 80 m up the hill
A friend advised the owner of the bowl to keep it out of direct sunlight to avoid blinding the fish, which might swim into the focal point of the parallel rays from the sun. Is the focal point actually within the bowl
question1a light ray of wavelength 589 nm is incident at an angle theta on the top surface of a block of polystyrene
a person reading a european newspaper finds that the low temperature the night before in stockholm was -16 degree
David is driving a steady 21.0 when he passes Tina, who is sitting in her car at rest. What is her speed as she passes him
Water ripples are produced by making a cork oscillate up and down at a frequency of 5 Hz. What is the PERIOD of the water ripples
Two 1.7 kg masses are 2.0 m apart (center to center) on a frictionless table. Each has +1.0 µC of charge. What is the magnitude of the electric force on one of the masses
Four protons and four electrons are located inside a pyramid and are separate from each other, What is the net value of electric flux through the surface of the pyramid
Friction and air resistance are negligible. Illustrate what speed does the ball have when the cable makes an angle of 30 degrees with respect to the vertical?
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