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1) The length and width of a rectangular room are measured to be 3.955 + or - 0.005 m and 3.050 + or - 0.005 m.Calculate the area of the room and its uncertainty in square meters.
2) How many times longer than the mean life of an extremely unstable atomic nuleus is the lifetime of a human?( Hint: The lifetime of an unstable atmoic nucleus is on the order of 10^-22 s)
Obtain the coefficient of kinetic friction between a 4.8 kilogram block and the horizontal surface on which hit rests if a 70 N/m spring must be stretched by 1.9 centimeter to pull the block with constant speed
A three level laser has energy levels E 1=1.50 eV, E 2=3.50 eV, and E 3=5.50 eV. Level E 2 is the metastable state. What is the lasing wavelength
(a) Find the speed at which transverse wave pulses travel in the left section. Answer in units of m/s. (b) Find the speed at which transverse wave pulses travel in the right section. Answer in units of m/s. (c) Find the time required for a pulse to t..
American football uses a field that is 100.0 yd long, whereas a soccer field is 100.0 m long. Which field is longer, and by how much
A ball is thrown upward from the top of a building at an angle of 30.0° to the horizontal and with an initial speed of21.0m/s. Find the horizontal range of the ball
drop a rock into a well. You hear the splash 2.40 s after you release the rock from rest. The speed of sound in air at the ambient temperature is 336 m/s. How far below the top of the well is the surface of the water?
The index of refraction of crown glass forviolet light is 1.529, while for red light it is 1.509. What is the speed of red light in crownglass
a dolphin in 25degc sea water emits a sound directly toward the bottom of the ocean 105 m below. how much time passes
The tension in a ligament in the human knee is approximately proportional to the extension of the ligament, What is the tension in this ligament when it is stretched by 0.67 cm
The speed of the 60kg skater is 0.257 m/s in the same direction as the original combined-skater velocity. What is the speed of the 75kg skater after they have pushed off?
Discuss how big is a physical protocol data unit and determine the number of simultaneous transmissions for many network architectures.
The critical angle for total internal reflection in a certain media boundary is 61 degree. What is the polarizing (Brewster) angle for light externally incident on the same boundary
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