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A horizontal steel bar, 4m long and 2 cm diameter is imbedded in two concrete walls. A 2000 kg mass is hung from its center. By how much does the center sag? (G steel = 150 x 10^9 Pa).
An x-ray tube is operated at 40600 V. Calculate the minimum wavelength of the radiation emitted by this tube. find the spacing between reflecting planes in the crystal
The length of the ice block is L1 = 0.00484 m and its temperature is T1 = -11.0 °C. The aluminum block is L2 = 0.00139 m long, Calculate the heat per second per square meter
The skater farthest out has a mass of 58.0 kg and is 7.80 m from the pivot. He is skating at a speed of 6.40 m/s. Find out the magnitude of the centripetal force that acts on him.
A test sled has a mass of 400 kg and is acted on by a thrust force of 200,000 N. It also experiences a viscous drag of 1600•V where V is the velocity. Find the 'terminal velocity' of the sled
A point charge q1 = -2.3 x 10^ -6 C is located at the origin of a co-ordinate system. Another point charge q2 = 6.3 x 10^-6 C is located along the x-axis at a distance x2 = 6.1 cm from q1. 1) What is F12,x, the value of the x-component of the forc..
The figure shows three blocks attached by cords that loop over frictionless pulleys. Block B lies on a frictionless table; what is the tension in the cord at the right
An uncharged capacitor and a resistor are connected in series to a source of EMF. If E = 3.63 V, C = 19.6 uF, and R = 119 ohm, Calculate the maximum charge on the capacitor
What is the direction of the object's acceleration after it is free. What is the magnitude of the objects acceleration.
A car with mass of 1000.0 kg accelerates from 0 m/s to 40.0 m/s in 12.0 s. Ignore air resistance. What is the average mechanical power output of the engine
What is the average speed in m/s of nitrous oxide molecule when the temp is 300K? The molar mass of oxygen is 0.032 kg/mol
The nucleus of the hydrogen atom has a radius of about 1.1 Ã- 10-15 m. find the volume of the nucleus
A 200 g block is pressed against a spring of force constant 1.40 kN/m until the block compresses the spring 10 cm. The spring rests at the bottom of a ramp inclined at 60.0 degrees to the horizontal.
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