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Atmospheric pressure is about 1.0 x 105 Pa on average.
a) Find the downward force of the air on a desktop with surface area 1.0 m2?
b) Convert this force to pounds therefore you really understand how large it is.
c) Why does this huge force not crush the desk?
a certain element has a mass per mole of 54.9380 gmol. what is the mass of a single atom in a atomic mass units and b
An object is moving with constant acceleration. During 24 s of the motion the object traveled 40 m and during the same 24 s the object speedincreased 4 times. Calculate the acceleration.
a nasa mission to update the electronics on a circular orbiting space station has required the work of four astronauts.
The escape velocity of a bullet from the surface of planet Y is 1727 m/s. Calculate the escape velocity from the surface of the planet X if the mass of planet X is 1.490 times that of Y, and its radius is 0.8790 times the radius of Y (in m/s).
An unknown substance has a mass of 0.125 kg and an initial temperature of 94.7. calculate the specific heat of the unknown substance
Find the gage pressure at the center of pipe A in pounds per square inch and in kilopascals.
the 2.0 cm diameter coil has 25 turns and has a current flowing through it of 5 A. The magnetic field strength is .4 T. What is the emf due to the change in flux
why is it far less dangerous to stand in front of an intense beam of red light than in front of a very low-intensity
Both surfaces of a double convex lens have radii of 30.8 cm. what is the index of refraction of the lens material
A proton is placed in an electric field of intensity 700 N/C. What is magnitude and direction (towards or away from the field) of the acceleration of this proton because of this field? The charge on a proton is +1.6 x 10-19 C and the mass of a prot..
Knowing that these two tones are two harmonics apart, find the smallest length the tunnel could have. Also determine the harmonic number for these two tones
Verify that the following f-stops and shutter speeds all give the same exposure : f2 at 1/200 s ; f2.8 at 1/100 s ; f4 at 1/50 s ; and f5.6 at 1/25 s.
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