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A uniform ladder 12 kg 10 meters long rests against a vertical frictionless wall. The ladder makes an angle theta of 73 degree with the floor. A man 58 kg climbs slowly up the ladder. When he has climbed to a point that is 8.3 m from the base of the ladder, the ladder starts to slip. What is the coefficient of static friction between the floor and the ladder?
What is the equation for kinematic equation for free fall?
A nearsighted person cannot see objects clearly beyond 30cm (the far point). what is the power of the lens (in diopters required to correct the patient's vision
Calculate the UNCERTAINTY of the specific gravity of a liquid given the following information: m = 54.50 +/- 0.05 grams, mA = 33.50 +/- 0.05 grams
A block of mass 0.247 kilogram is located on top of a light, vertical spring of force constant 4 950 N/m, Find to what maximum height above the point of release does it rise
A car of mass 1.8 x10^3 kg is travelling east at a speed of 28m/s along a horizontal roadway. When its brakes are applied, the car stops in 5.8s. What is the average horizontal force exerted on the car even as it is braking.
A 150kg uniform board 8m long is supported by two posts: one 1m from the left and the other 2m from the right. Find the forces on the supports
Determination of the Initial Velocity of a Projectile from Range-Fall Measurements. After the horizontal projectile leaves the gun, what are the accelerations in the x and y directions?
Lightning As a crude model for lightning, consider the ground to be one plate of a parallel-plate capacitor and a cloud at an altitude of 550 m to be the other plate. How much charge can the cloud hold before the dielectric strength of the air is e..
two identical conducting spheres each having a radius of 0.500 cm are connected by a light 2.00-m-long conducting wire.
To the unaided eye, the planet Jupiter has an angular diameter of 50 arc seconds. What will its angular size be when viewed during a 0.75 m focal length refracting telescope with an eyepiece whose focal length is 30 mm?
A flat slab of styrofoam, with a density of 32 kg/m^3, floats on a lake. What minimum volume must the slab have so that a 34kg boy can sit on the slab without it sinking
Two engineering students, John with a mass of 95 kg and Mary by a mass of 60 kg, are 64 m apart. Suppose each has a 0.01% imbalance in the amount of positive and negative charge, one student being positive and the other negative.
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