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A sample of ethyl alcohol (C2H5OH) has a density of 806 kg/m3 and a volume of 1.73 x 10-3 m3.
(a) Determine the mass (in kg) of a molecule of ethyl alcohol, and
(b) find the number of molecules in the sample.
A small sphere of mass m= 7.60 g and a charge q1 = 29.9 nC is attracted to the end of a string, what is the smallest value d can have before the string breaks
A rigid container holds 2.7mol of gas at a pressure of 2.6atm and a temperature of 50 C. What is the container's volume
What is the force exerted on beam by the fixture P (P is where the beam is attached horizontally to the brick wall) at the wall (magnitude and direction).
What is the frequency of rotationA 10kg baby is perched at the rim of a 40kg disk. The disk rotates freely in a horizontal plane at 1 rev/s. What is the frequency of rotation in rev/s when the baby arrives at the center
A 2 cm diameter, 5 cm long capillary-tube viscometer is being used to measure viscosity of a 10 Pa s liquid food. Determine the pressure required for measurementhen a flow rate of 1 kg/min
Two loudspeakers on a concert stage are vibrating in phase. A listener is 57m from the left speaker and 30m from the right one. The listener can respond to all frequencies from 20 to 20 000 Hz.
A solid cylindrical disk has a radius of 0.15 m. It is mounted to an axle that is perpendicular to the circular end of the disk at its center. What is the mass of the disk
A hot-air balloon plus cargo has a mass of 1740kg and a volume of 11730m3. What is the density of the hot air in the balloon
How far away from the people is the plane.
What is the caused by sun wind in upper atmosphere
A basketball player is balancing a spinning basketball on the tip of his finger. The angular displacement of the ball, in radians is
A 77.0 kg man floats in fresh water with 3.00% of his volume above water when his lungs are empty, Calculate the volume of air he inhales--called his lung capacity--in liters
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