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A 19.00kg lead sphere is hanging from a hook by a thin wire 3.40m long, and is free to swing in a complete circle. Suddenly it is struck horizontally by a 4.00kg steel dart that embeds itself in the lead sphere.
What must be the minimum initial speed of the dart so that the combination makes a complete circular loop after the collision?
The K-shell ionization energy of iron is 8500 eV, What is the wavelength of Kalpha X-rays emmited by iron
The flowers of the bunchberry plant open with astonishing force and speed, causing the pollen grains to be ejected out of the flower in a mere 0.30 ms at an acceleration of 2.5×104 m/s2. Evaluate with what speed are pollen grains ejected from a b..
Consider a pump that is required to compress air in a factory. The cylinder in the pump has an inner diameter of 2.00 cm and length 60.0 cm. What is the increase in internal energy of the gas
Three long wires (wire 1, wire 2, and wire 3) hang vertically. The distance between wire 1 and wire 2 is 20.0 cm.find the magnitude and direction of the current in wire 3
Please explain in detail and step by step a 1.0kg block is held at rest against a spring with a force constant k = 740N/m. Find d such that the block's speed after crossing the rough patch is 2.4m/s
Find the final velocity of the combined mass after an in elastic collision 500g at 4m/s toward 300g 2 m/s and the change of KE
What is the maximum rate of rotation. A moving electron passes near the nucleus of a gold atom, which contains 79 protons and 118 neutrons. At a particular moment electron is a distance of 7.5 x10 ^9 m from the gold nucleus.
On a part-time job, you are asked to bring a cylindrical iron rod of density 7800kg/m3 , length 91.6cm and diameter 3.00cm from a storage room to a machinist. Calculate the weight of the rod
A group of explorers in Antarctica can obtain water only by melting ice. They wish to make 4 cups of coffee, determine the amount of heat required and the amount of power required
A box slides across a frictionless floor with an initial speed v = 3.4 m/s. It encounters a rough region where the coefficient of friction is µk = 0.5. with what speed does the box leave the strip
Two blocks of weights 70.0 and 100.0 N are connected by as massless string and slide down an inclined plane making an angle of 42.0 deg. find the magnitude of the heavier block's acceleration
You are applying a anti reflecting coating to your plane. You don't want to be seen by radar which uses 'light' of wavelength 2cm. determine the minimum thickness of this coating
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