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A stone is dropped from rest into a well. The sound of the splash is heard exactly 2.00 s later. Find the depth of the well if the air temperature is 14.0°C. meter.
A bottle of wine contains 12.5% ethanol by volume. The density of ethanol is 0.789 g/cm3. Calculate concentration of ethanol in wine in terms of mass percent and molality.
Draw the payoff trees of each assets
A diver pushes off horizontally from the top of a vertical cliff that is 40.0 m high from water surface below. How long is the diver in the air
a) Use Planck's equation (E = hv) to determine the energy, in kilojoules per mole, of radiation of frequency 2.12×10^14 (s^-1). b) What electron transition in a hydrogen atom, starting from the orbit 10, will produce light of wavelength 380 nm
Discuss some of the advantages and disadvantages of the WHO protocol versus the single test. Give the assumptions that you have made in carrying out calculations.
How many tons of ice cream will the factory produce? how much does it pay in emission fees? what are its profits?
One has a dipole of 0 D, and the other has a dipole moment of 2.95 D. Draw the structure of the stereoisomer with dipole moment of 2.95 D.
Is it possible to have homogeneous binary liquid solution whose viscosity is higher or lower than that of either of the two component liquid? what conclusions would you draw about the nature of intermolecular interactions in such a mixture
a 3.8 kg block is accelerated from rest by a compressed spring of spring constant 650 N/m. What is the original compression distance of the spring
Write an e-mail that will impress your supervisor. Make sure the subject line is concise and descriptive or what the memo is about.
A popgun uses a spring for which k=20 N/cm. How high can the gun shoot a 5.0 g projectile
a 1000 N crate is being pushed across a level floor at a constant speed Vi=1.75 m/sec by a force of F=300N at an angle of theta=20 Degrees below horizontal. what is the final velocity of the crate
Find the wavelengths of these extremes at a temperature. find out the force exerted by the man on the rope, and the work done in dragging the box over a distance of 15m.
A playground merry-go-round of radius R = 2 m has a moment of inertia I = 275 kg•m2 and is rotating at 14 rev/min about a frictionless vertical axle.
A child playing in a swimming pool realizes that it is easy to push a small inflated ball under the surface of the water while a large ball requires a lot of force
A piece of glass has a temperature of 80.6 ° C. Liquid that has a temperature of 43.0 ° C is poured over the glass, determine the specific heat capacity of the liquid
A skateboarder, starting from rest, rolls down a 12.5 m ramp. When she arrives at the bottom of the ramp her speed is 6.10 m/s. (a) Determine the magnitude of her acceleration, assumed to be constant. .m/s2 (b) If the ramp is inclined at 26.5° wit..
A plane is flying with an airspeed of 266 miles per hour with heading 272.7 deg the wind currents are running at a constant 45.7 miles per hour in the direction 238.6 deg
At a temperature of 0° C, the mass and volume of a fluid are 798 kg and 1.25 m3. The coefficient of volume expansion is 1.25 10-3(° C)?1. What is the density of the fluid when the temperature has risen to 21.0° C
The aorta carries blood away from the heart at a speed of about 40 cm/s and has a radius of approximately 1.1 cm. determine the approximate number of capillaries in the human body
trumpet creates a sound intensity level of 1.23 x 10^2 dB at a distance of 0.80 m. What is the sound intensity of a trumpet
questionin an x-ray machine electrons are accelerated and then fired so that they are incident on a metal target. which
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