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A man pulls a suitcase from its handle, making an angle of 45 degress above the horizontale. While moving the suitcase horizontally over a distance of 40 m, 820 J of work are done by the man on the suitcase. Find the pulling force of the man. (cos45 = 0.7, sin45 = 0.7)
an inductor that has a resistance of 40 ohm is connected to an ideal battery of 224V. Calculate the inductorace
A stone dropped into a pond generates a travelling wave group approximately 1 m long; the waves within the group have a wavelength of about .1 m Estimate the range of the wavevector spectrum representing the group.
A typical human body has surface area 1.4 m2 and skin temperature 33 C. If the body's emissivity is about 0.90, what's the net radiation from the body when the ambient temperature is 11C? Express your answer with the appropriate units.
What is the velocity of the gold pack after the collision. what least average speed must it have in the second half of the event in order to qualify.
two boxes are sitting on a horizontal frictionless surface. Box A has a mass of 30kg and box B has a mass lof 20 Kg. what is the tension in the connecting rope
Two cars traveling in opposite directions collide head on and are brought to rest. estimate the change in entropy of the universe
The middle C string on a piano is under a tension of 944N. The period and wavelength of a wave on this string are 3.82 ms, calculate the linear density of the string
A particular wire has a diameter of 1.7 mm and length of 1.3 m. If its resistance is 15 meter-Ohms, what is the resistivity of the metal from which it is made
an aluminum rod is 37cm long at 35.1 degree celcius and has a mass of 522g. if 20400 j of energy is added to the rod by
We know that face centered lattice in cubic and orthorhombic (FCC & FCO) system are listed in Bravais lattice system but face centered tetragonal (FCT) is not listed, why?
A wing produces lift by diverting the flow of air, producing higherpressure below the wind and lower pressure above the wing. Find thelift produced by an airplane wing having an area of 30 squaremeters if the air velocity over the uper and lower s..
In an RC series circuit, ? = 12.0 V, R = 2.02 M?, and C = 2.33 µF. Find the maximum charge that will appear on the capacitor during charging
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