Find how far are you from the point of the explosion
Standing on a roof on July 4, you view a burst of distant fireworks. You hear the explosion 8.25 s later. Determine how far (in km) are you from the point of the explosion? Suppose that the temperature is 77 °C.
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Assume that the G-string of a guitar is 3.6 m long and consists of a linear density of 78.9 mg/m. The thumb screw joined to the string is adjusted to give a tension of 3.5 kN. Determine the basic wavelength of the G-string for the guitar?
Explain how would you write the balanced equation for the reaction of the acetaldehyde, CH3CHO with Toller's reagent, Ag(NH3)2+ (aq).
If capacity of radiator is 3.6L, how much coolant must be drained and replaced with water to decrease antifreeze concentration to suggested level?
Assume the mixture is ideal. A mixture is formed form 5 mol of liquid benzene and 5 mol of liquid tolulene at 25C and 1atm. Use Δf G (benzene, l)=90kJ/mol and Δf G(toluene)=100kJ/mol.
At a temperature of 28.33 Celsius a sample of chromium weighing 34.5 g was initially. It needed 945 Joules of heat energy to increase the temperature to 31.75 Celsius.
A fish takes the bait and pulls on the line having a force of 2.2 N. The fishing reel that rotates without friction is a cylinder of radius 0.052 m and mass 0.88 kg. (i) Determine the angular acceleration of the fishing reel?
At 21.2 Celsius an 82.5 g sample of a metal is heated to 98.5 Celsius and is added to 125.0 g sample of water. The final temperature of the mixture is 27.5 Celsius after thermal equilibrium is established.
Forty-nine mill curies (49 x 103 micro curies) of a long half-life radionuclide in the soluble solution is to be discharged into the sanitary sewer system through a University.
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