The sun is 30 degrees above the horizon it makes a 48 meter
The sun is 30 degrees above the horizon. It makes a 48 meter long shadow of a tall tree.
How high is the tree?
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Solid cylindrical copper rod 0.2m long has one end maintained at temperature 20K, other end blackened and exposed to thermal radiation from surrounding walls at 500K. what is the temperature of the blackened end
1.2 mol of helium is mixed with 2.3mol of argon in a volume of 1.0L and a temperature of 25.0 degree C. Assuming that helium and argon are perfect gases, what is the pressure of the mixture
Migrating geese tend to travel in straight-line paths at approximately constant speed. How far is the goose from its original position
1.5 mol of oxygen are mixed with an unknown amount of nitrogen in a 2.0L container at a temperature of 26.0 degrees C. If the final pressure of the mixture is 4.3atm, what is the number of moles of nitrogen in the container.
The sun is 30 degrees above the horizon. It makes a 48 meter long shadow of a tall tree. How high is the tree
An insect sits on the edge of a spinning record that has a radius of 0.15 m. The insect%u2019s speed is 0.6 m/s. What is the insect's acceleration
A mass of solid potassium chlorate undergoes thermal decomposition in the presence of a catalyst (manganese dioxide) to produce solid potassium chloride and oxygen gas. As a result, 250mL of oxygen are collected over water at 26.0 degrees C and a
An undersea research chamber for aquanauts is spherical with an external diameter of 7.93 m. The mass of the chamber, when occupied, is 64800 kg. What is the buoyant force on the chamber
The root-mean-square (rms) speed of a sample of molecules was found to be 1.8*10^3 m/s at 25.0 degrees C. After heating, the rms speed was found to be 4.6*10^3 m/s. What was the temperature of the sample after heating
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