You (m=80.0 kg) are in a rowboat (m=40.0 kg) of volume 0.300 m3. To answer the following, use the density of seawater as 10,050 N/m3. Before you step into the rowboat, how much water does the rowboat displace with nothing in it? What is the maximum load (excluding you and the boat) that you can take on before the rowboat sin ...continues
Estimate the total number of electrons in any molecule
If you remove all the electrons from a rain drop (diameter = 1 mm), what would be the gain in the electrostatic potential of the entire earth? Consider the radius of the earth to be R=6378.14 km. The answer clearly in by the simplest way illustrates the solution.
To understand the magnitude of the greenhouse effect on Venus, calculate the equilibrium blackbody and subsolar blackbody temperatures of Venus. Compare these temperatures to the observed temperature of 750 K. Make a statement about the importance of the greenhouse effect. (b) Do the same for the Earth. Comment on the relative i ...continues
(a) What would the temperature of the Earth's atmosphere have to be such thet the average speed of a hydrogen molecule(H2) is Equal to the Earth's escape velocity? What about an oxygen molecule(O2)? (b) It is thought that our atmosphere initially contained hydrogen molecules. Assuming the temperature of our atmosphere is 30 ...continues
In a nuclear submarine power plant, the temperature of the water in the reactor is above 100C. How is this possible? I believe it has to do with the cooling process of boiling water, but would like a little guidance. Thank you for your help!
an equation desctibing the approx pressure in Pa
equation describibg the approx pressure in Pa at centre of a planet that has radius R and as mean densiry P is given by P = 2nG --- p2 R2 3 where G is the universal gravitation constant Radius of earth 6.37 x 10 3Km Mean density 5.51 x 10 3kg m -3 Calculate the expected pressure at the centre of the earth ...continues
please answer me for the attached. ---------- Automobile engine slows down from 4500rpm to 1200rpm in 2.5 s. Calculate (a) its angular acceleration, assumed constant, and (b) the total number of revolutions the engine makes in this time. Pilots can be tested for the stresses of flying high speed jets in a whirling "human ...continues
A 1 m^3 closed container contains air with vapor pressure 10hPa. a dish containing 8 g of liquid water is placed in the container. a thermostat maintains the temperature of the air within the container at 25 degree Celsius at all times. In the following, assume a latent heat of vaporization of 2.4*10^6 J/kg. Will all the wate ...continues
(a) assuming an average sea-level pressure of 1000hPa, what is the mass of the atmosphere? assume that the earth is as sphere with radius 6400km. (b) what is the mass of the atmosphere above 500hPa? you can again assume a sphere of radius 6400km for this calculation. what fraction of the mass of the earth's atmosphere lies ab ...continues
does the sensitivity of an altimeter to errors in the boiling point temperature increase or decrease with altitude? make the approximation that the latent heat of vaporization and the scale height do not depend on the boiling point temperature.
