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A 4.2 m long uniform beam is supported by a cable at its center. A 69 kg steelworker stands on one end of the beam, and a bucket of concrete is suspended from a point 76 cm from the beam's center, on the other side of the center from the steelworker. What's the mass of the bucket and concrete?
A wire with mass 38.0g is stretched so that its ends are tied down at points a distance 78.0cmapart. What is the speed of propagation of transverse waves in the wire
A certain amount of oxygen gas occupies a volume of 12 liters when its temperature is 20C and its pressure is 1 atm. Calculate the number of grams of oxygen
an earthquake generates three kinds of waves surface waves l waves which are the slowest and weakest shear s waves
A sled of mass 50.0 kilogram is pulled along flat, snow-covered ground. Find what force will be needed to start the sled moving
A 4.0 kilogram mass is attached to a spring that has a spring constant, k=2500N/m, and is resting on a frictionless horizontal surface. Find what is the maximum velocity of the block
A hypodermic syringe contains a medicine with the density of water, Determine the speed of the medicine as it leaves the needle's tip
In recent years it has been possible to buy a 1.0 Fcapacitor. This is an enormously large amount of capacitance. How long must your inductor be
The radius of curvature of the curved side of a Plano-convex lens made of glass (n = 1.64) is 25 centimeter. Evaluate what is the focal length of the lens
light of wavelength 700 nm falls on a 0.38 mm wide slit and forms a diffraction pattern on a screen 1.3 m away.a find
Two balls with masses of 2.0 kg and 6.0 kg travel toward each other at speeds of 12 m/s and 4.0 m/s, respectively. how much kinetic energy is lost in the collision
In one form of plethysmograph (a device for measuring volume), a rubber capillary tube with an inside diameter of 1.22 mm is filled with mercury at 20°C, Calculate the resistance of the mercury
A 9 ohm resistor are connected in series to a power supply. The voltage drop across the 6 ohm resistor is measured with a amphmeter and found to be 12.0 volts. what is the voltage setting of the power supply
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