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Estimate how many molecules of air are in each 1.9 L breath you take that were also in the lastbreath Einstein took (assumed to be the same volume). (Hint: Assume the atmosphere is about 9 km high andof constant density. Take the temperature of the air to be27°C.)
Two stars located 27 light-years from Earth are barely resolved using a reflecting telescope having a mirror of diameter 66 cm. find the separation between the stars
Using thermogravimetric curve we can relate the mass changes to the stoichiometry involved. calculate the percentage weight loss for the following compounds when they are heated at uniform rate in thermogravimetric analysis.
Sound is passing perpendicularly through an open window whose dimensions are 1.1 m x 0.75 m. How much sound energy comes through the window
Four force vectors act simultaneously on a 65 kg object. Force One is 211 N West, Force Two is 193 N at an angle 28.0 degrees north of west, What is the magnitude of the final acceleration of the object
A 2.6k and a 1.8k resistor are connected in parallel and this combination is connected in series with a 1.8k resistor. If each resistor is rated at 1/2W, what is the maximum voltage that can be applied across the whole network.
a 4.64 kg block is on a plane inclined at 18.5 degrees with respect to the horizontal. What is the normal force
A rock of mass 42 kg accidentally breaks loose from the edge of a cliff and falls straight down. What is the magnitude of the acceleration of the rock
A satellite has a mass of 91 kg and is located at 1.97 106 m above the surface of Earth. What is the potential energy associated with the satellite
Illustrate what was the magnitude of the centripetal acceleration of the rock when it was on the string? (b) What was its speed when it was on the string?
A 7.0mW laser beam has a circular cross section with diameter 0.80mm, What is the maximum radiation pressure that this laser can exert on a mirrored surface
A conventional mercury thermometer consists of a thin glass capillary filled with mercury. The capillary is enclosed in a protective glass cylinder. These mercury thermometer can be quite sensitive and very precise.
A tank having a volume of 0.100 m3 contains helium gas at 135 atm. How many balloons can the tank blow up
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