Physics question and answers for September 16, 2023
- Q A standard violin string is 32.8 cm long from the tuning peg tothe bridge. When played open(without pressing a finger against thefingerboard), this string has a fundamental (lowest)frequency of440 Hz.(a)...
- Q 1. An object is 30 cm in front of a converging lens with a focallength of 10 cm. Use ray tracing todetermine the location of the image. Is the image...
- Q 1) Two planets, A and B, with unknown masses are uniformlyrotating around a star maintaining a fixed distance of 4 millionkilometers and 5 million kilometers respectively from the star. Inthe...
- Q Can an eccentricity be negative?
- Q 3 During a lunar eclipse the moon is in the shadow of the Earth.Why does the moon have a faint red color during the eclipse?4 Why is the lettering on...
- Q A student on a piano stool rotates freely with an angular speedof 3.05 rev/s . The student holds a 1.05 kg mass in eachoutstretched arm, 0.779 m from the axis...
- Q From the end of a string (whose other end is firmly attached tothe ceiling) we attach a mass m1.Similarly, we attach a mass m2from the end of a different string....
- Q If you spill some water on the kitchen floor, it's obviously veryslippery. Yet when you want to turn the pages over in a magazine,you put some water on your hands...
- Q Q.Consider a silicon p-n junction solar cell of area 4cm2. If the doping of the solar cell are NA =1.0x1016cm-3 and ND = 1.5x1019 cm-3 and givenτn = 10 μs,...
- Q A large fish hangs from a spring balance supported from the roofof an elevator.Part AIf the elevator has an upward acceleration of 2.90m/s2 and thebalance reads 50.0N , what is...
- Q Not having studied General Relativity, I have sometimes beenpuzzled by references to the behaviour for \"classic\" blackholes
- Q The thickness of a single membrane is about 7 nm. A myelinsheath consists of multiple membranes produced by coils of Schwanncell or oligodendroglia cells. Suppose a myelin sheath results from100...
- Q 6) A meteor of mass 575 kg has speed 90.0 m/s when it is 800 kmabove the surface of the Earth. It is falling vertically andstrikes a bed of sand...
- Q a 240lb man is standing on both feet. the contact areafor each shoe is 4 inches by 12 inches. the area of contact foreach shoe is 48 inches. what is...
- Q An 8.0 m, 280 N uniform ladder rests against a smooth wall. Thecoefficient of static friction between the ladder and the ground is0.65, and the ladder makes a 50.0° angle...
- Q An object at rest on a flat, horizontal surface explodes intotwo fragments, one seven times as massive as the other. The heavierfragment slides 8.50m before stopping. How far does the...
- Q A circular coil 20.0cm in diameter and containing nine loopslies flat on the ground. The Earth's magnetic field at thislocation has magnitude 8.00
- Q A 575-g block is dropped onto a relaxed vertical spring that hasa spring constant k =200.0 N/m. The block becomes attached to thespring and compresses the spring 58.1 cm before...
- Q Interactive Solution 8.29 offers a model for this problem. Thedrive propeller of a ship starts from rest and accelerates at 2.31x 10-3 rad/s2 for 2.44 x 103 s. For the...
- Q Atoms in a solid are not stationary, but vibrate about theirequilibrium positions. Typically, the frequency of vibration isabout f = 4.60 x 1012 Hz, and the amplitude is about 3.55...
- Q A novelty clock has a 0.0104 kg mass object bouncing on a springthat has a force constant of 1.28 N/m. How many joules of kineticenergy does the object have at...
- Q why is a 1 dimensional spectral sequence not enough to classifystellar spectra?
- Q A symmetrical table of height 0.780 m, length 1.30 m, and weight431 N is dragged across the floor by a force applied to its frontedge. The force is directed to...
- Q When the car is skidding, does kinetic friction act on thetire?When the car is not skidding(wheels rolling), does staticfriction act on the tire?If so, explain why.
- Q A 28.0 kg beam is attached to a wall with a hinge while its farend is supported by a cable such that the beam is horizontal. Ifthe angle between the...
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