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An 80 kg man is one fourth the way up a 10 m ladder that isresting against a smooth frictionless wall. The ladder has amass of 20 kg and it makes an angle of 60 degrees with thefloor.
a. What is the normal force of the wall on the ladder?
b. What is the normal force of the floor onthe ladder?
c. What is the coefficient of staticfriction between the floor and the ladder?
A wave pulse travels down a slinky. The mass of the slinky is m = 0.94 kg and is initially stretched to a length L = 7.5 m. What is the speed of the wave pulse
A 2000 kg car rounds a curve of radius 70 banked at an angle of 12. What is the magnitude of the friction force
A gun shoots bullets that leave the muzzle with a speed of 336 m/s. If a bullet is to hit a target 136 m away at the level of the muzzle, the gun has to be aimed at a point above the target. How far above the target is this point.
the weight of a star is usually balanced by two forces the gravitational force acting inward and the force created by
There are no results for For a transformer with Vp=120Vrms, and turn ratio of 8 to 1 with a RL of 500. What is the secondary ratio
please include all units and conversions in calculations.over a time interval of 2.16 years the velocity of a planet
q1. assume you are 75 cm from a plane mirror. what area of the mirror is used to reflect the rays entering one eye from
How much work should be done to bring 3 electrons from a great distance apart to within 2.55E-10 m from one another (at the corners of an equilateral triangle).
question a water chiller with a capacity of 150 tons of refrigeration cools 320gpm of water entering the chiller at
X-rays with initial wavelength 0.0665 nm undergo Compton scattering. At which scattering angle is this wavelength observed
In a local bar, a customer slides an empty beer mug on the counter for a refill. The bartender is momentarily distracted and does not see the mug, with what velocity did the mug leave the counter
when 92.8 v is applied across a wire that is 9.8 m long and has a 0.32 mm radius the magnitude of the current density
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