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A bag of cement of mass m is place on plank of length L. Bag is place distance L/4 from right end of plank. Plank has mass m. two person pick up plank, one at each end. Determine how much must man nearest bag support?
A skier (m=55.0 kg) starts sliding down from the top of a ski jump with negligible friction and takes off horizontally. If h = 6.90 m and D = 10.4 m, determine H.
A 65ohms resistor, an 8.0uF capacitor, and a 35 mH inductor are connected in a series in an ac circuit. Calculate the impedance for a source frequency of 300Hz
An electron has an initial velocity of (11.0j + 15.0k ) km/s and a constant acceleration of (4.00x10^12 m/s2) in a region in which uniform electric and magnetic fields are present. If = (400 µT)i , find the electric field in ijk notation.
What are the three longest wavelengths for standing waves on a 237--long string that is fixed at both ends, what is the frequency of the third-longest wavelength
A vertical solid-steel post 26.0 cm in diameter and 2.53 m long is required to support a load of 8200 kg. What is the strain in the post and the change in the posts' length when the load is applied
In a paramagnet with spin-1 dipoles, each dipole can take on 3 stages: -1, 0 and +1, relative to the direction of the magnetic field, Derive an expression for the partition function for this dipole
A circular rod of length 25cm and diameter 8mm is made of 1045grade steel. (a) calculate the stress and strain in the rod, and its extension, when it is subjected to 5kN of tension.
A projectile is fired with an initial speed of 113 m/s at an angle of 60.0° above the horizontal from the top of a cliff 49.0 m high. determine the time to reach maximum height
a chair of weight 140 n lies atop a horizontal floor the floor is not frictionless. you push on the chair with a force
Shareen finds that when she drives her motor boat upstream she can travel with a speed of only 8 m/s, Find the current of the river on which Shareen is traveling
wheel A of radius rA = 11 cm is coupled by belt B to wheel C of radius rC = 20 cm. The angular speed of wheel A is increased from rest at a constant rate of 1.6 rad/s2. Find out the time needed for wheel C to reach an angular speed of 100 rev/min,..
Two polaroid sheets are arranged so that their transmission axes are at 90 degrees to each other. What is the intensity of light leaving the final sheet
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