Biology
The genetic code for an oak tree is (A) More similar to an ash tree than to a squirrel (B) more similar to a chipmunk than to a maple tree (C) more similar to a mosquito than to an elm tree
physics
What is the volume occupied by 7.0 g of hydrogen under a pressure of 2.6 atm and a temperature of 300 K? answer is .0332 m^3. how? A steel cylinder of radius 7.0 cm and length 4.0 cm is placed in end-to-end thermal contact with a copper cylinder of the same dimensions. If the ...
PHYSICS
Two metal rods -- one copper the other aluminum -- are connected in series, as shown in the figure below. Note that each rod is 0.525 m in length, and has a square cross section 1.25 cm on a side. The temperature at the copper end of the rods is 2.00°C; the temperature at ...
physics
An aluminum saucepan with a diameter of 18 cm and a height of 6.0 cm is filled to the brim with water. The initial temperature of the pan and water is 19°C. The pan is now placed in a refrigerator and cooled to 9°C. Calculate the drop in water level in the pan.
physics
Starting at rest at the edge of a swimming pool, a 72.0 kg athlete swims along the surface of the water and reaches a speed of 1.10 m/s by doing the work Wnc1 = +165 J. Find the nonconservative work, Wnc2 done by the water on the athlete. Thanx in advance.
physics
At what altitude above the Earth's surface is the acceleration due to gravity equal to g/128? i did g/128=(G*Earth's mass)/r^2 then solved for r and got 72080960. its within 10% of the correct answer but not correct. what am i doing wrong? (ive already rounding differe...
Physics
A spaceship of mass m travels from the Earth to the Moon along a line that passes through the center of the Earth and the center of the Moon. (a) At what distance from the center of the Earth is the force due to the Earth five times the magnitude of the force due to the Moon? ...
physics
thanks much! ^^
physics
A train is traveling up a 5.2° incline at a speed of 3.09 m/s when the last car breaks free and begins to coast without friction. (a) How long does it take for the last car to come to rest momentarily? (b) How far did the last car travel before momentarily coming to rest?
physics
4*sin(25°) should be the distance north. 4*cos(25°) should be the distance east.
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