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Question1
1) The molecular mass of helium is 4 g/mol, Boltzmann’s constant is 1.38066 × 10−23 J/K, universal gas constant is 8.31451 J/K mol, and Avogadro’s number is 6.02214 × 1023 1/mol. Given: 1 atm = 101300 Pa. How many atoms of helium gas are necessary to fill a balloon to diameter 25 cm at 59?C and 0.934 atm? 2) What is average kinetic energy of each helium atom? Answer in units of J 3) what is rms speed of each helium atom? Answer in units of m/s
Question2
A rod of length 30.0cm has linear density given by =50.0+20.0x,where x is distance from one end, measured in meters and linear density is in grams/meter.
a) What is the mass of the rod?
b) How far from the x=0 end is its center of mass?
A parallel-plate air capacitor of area A=16.0cm2 and plate separation d=3.40mm is charged by a battery to a voltage 52.0V. how much additional charge will flow from the battery onto the positive plate
A canoe has the velocity of 0.420m/s southeast relative to the earth. The canoe is on a river that is flowing at 0.570m/s east relative to the earth.
Two long, straight wires are parallel and are separated by a distance of d = 0.230 m, The top wire in the sketch carries current I1 = 3.80 A, toward the right, and the bottom wire carries current I2 = 7.00 A, what are the magnitude and direction of t..
A Girl is pushing on a 45 kg dresser with 300 N of force. The dresser has a coeficient of statice friction of 0.83, How much is the force of friction on the dresser
The polarizers are rotated, so that the second polarizer has a transmission of 43.6 degrees with respect to the first polarizer, find the intensity of the beam
A 0.360 kg croquet ball makes an elastic head-on collision with a second ball initially at rest. The second ball moves off with half the original speed of the first ball.
Saturn's moon Titan is the largest moon in the solar system. Its mostly-nitrogen atmosphere exerts a pressure of 1.60×105 Pa at the moon's surface.
Use the work-energy theorem to find out how high it will be when its speed has been reduced to half of its initial value. Please provide step-by-step process.
A small current element at the origin has a length of 1.2 mm and carries a current of 3.9 A in the +z direction. Find the magnitude and direction of the magnetic field due to this current element at the point (0, 3.7 m, 2.0 m).
What is total distance the bird travels by trains collide
A certain corner of a room is selected as the origin of a rectangular coordinate system. what is the distance of the fly from the corner of the room
A baseball has a velocity of 41.5 m/s (92.8 mi/h), directed horizontally, as it is released by a pitcher. Calculate the ball's instantaneous acceleration just before it is released
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