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Find with what tension must a rope with length 2.90 meter and mass 0.220 kilogram be stretched for transverse waves of frequency 40.0Hz to have a wavelength of 0.930 m?
A Carnot heat engine has a thermal efficiency of 0.510, and the temperature of its hot reservoir is 700 K. what is the work output of the engine during one cycle
A person sitting quietly in a room on a winter day may lose heat primarily by radiation from the outer surface of her clothes to the walls of the room. what is the temperature of the outer surface of the clothes
If the jet is moving at a speed of 1600 km/h at the lowest point of the loop, Calculate the pilot's effective weight at the top of the circle
Three capacitors are connected in series. The equivalent capacitance of this combination is 2.60, What is the third capacitance (in F)
Consider an optical gain medium that has two levels at E 1=1.50 eV and E 2=3.50 eV. What is the spontaneous emission wavelength
What will be the equilibrium temperature when a 239 g block of copper at 274 degrees C is placed in a 140 g aluminum calorimeter cup containing 817 g of water at 13.7 degrees C?
An air core solenoid is used as an inductor in an oscillating LC circuit with a 1.50 \muF capacitor. The solenoid had a diameter of 6.40 cm, Find the number of turns in the solenoid
Suppose you measure the terminal voltage of a 3.260 V lithium cell having an internal resistance of 5.50 by placing a 1.00 kvoltmeter across its terminals, Find the actual terminal voltage to the nearest 0.01 V
A heat engine makes use of 785 kJ of heat to produce 245kJ of work. It operates at a temperature of 285 oC It exhausts heat to the 22.5 oC atmosphere. What is its ideal efficiency and its actual efficiency. Why are these two quantities so different..
A cluster of galaxies has a radius of about 5.2 million light-years (4.9×10^22) and an intracluster medium with a temperature of (6.5×10^7) K. Estimate the mass of the cluster. Give the answer in both kilograms and solar masses. Suppose combined l..
a thin rod has a length of 0.25m and rotates in a circle on a frictionless tabletop. The axis is perpendicular to the length of the rod at one of its ends. what is the angular velocity
Light with a frequency of 2.99 x 1015 Hz ejects electrons from the surface of zinc, which has a work function of4.33 eV. What is the minimum de Broglie wavelength of the ejected electrons?
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