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What are approximate simple harmonic motion and exact simple harmonic motion and why exactly simple harmonic motion and exact simple harmonic motion and why exactly simple harmonic motions are rare?
Lithium would be the least expected to undergo a reaction with chlorine gas. Write a balanced chemical equation for the reaction.Express your answer identify all the phases.
A 1543-kg submarine rises straight up toward the surface. Seawater exerts both an upward buoyant force of 14,687 N on the submarine and a downward resistive force of 1007 N. What is the submarine's
A worker stands still on a roof sloped at an angle of 34.3° above the horizontal. He is prevented from slipping by a static frictional force of 415 N. Find the mass of the worker.
Calculate the solubility of carbon dioxide in g/L at 20C in a closed container of water if the partial pressure of CO2(g) is 3.6atm. Henry's constant is 0.023 mol/L atm for Co2(g) at 20C.
Three forces act on a moving object. One force has a magnitude of 86.0 N and is directed due north. Another has a magnitude of 61.0 N and is directed due west. What must be the magnitude and directi
Benzene (C6H6) burns in air to producecarbon dioxide and liquid water. Calculate the heat released (inkilojoules) per gram of the compound reacted with oxygen.
Traveling at a speed of 17.9 m/s, the driver of an automobile suddenly locks the wheels by slamming on the brakes. The coefficient of kinetic friction between the tires and the road is 0.800. What i
A 25.0-kg sled is being pulled across a horizontal surface at a constant velocity. The pulling force has a magnitude of 77.5 N and is directed at an angle of 30.0° above the horizontal. Determin
Given that the heat of fusion of water is -6.02 kJ/mol, that the heat capacity of H2O(l) is 75.2 J/mol K and that the heat capacity of H2O (s) is 37.7 J/mol K, calculate the heat of fusion of water
A Mercedes-Benz 300SL (m = 2000 kg) is parked on a road that rises 15° above the horizontal. (a) What is the magnitude of the normal force?
The book weighs 32 N. The coefficient of static friction between his hands and the book is 0.45. To keep the book from falling, what is the magnitude of the minimum pressing force that each hand mus
A solution of acetic acid isprepared in water by adding 11.1g. of sodium acetate to a volumetric flask and bringing the volume to 1.0L with water. The final pH is measured to be 5.25.
A 4.1 kg cart is placed on a frictionless air track with an angle of 64.3o. A 23.4 kg mass is attached to the cart using a massless string draped over the end of a frictionless pulley at the top of
A 50 kg force block at rest on a frictionless surface is acted on by forces F1 = 5.5 N and F2 = 3.5 N . What additional forces keep block at rest?
A double-slit experiment is performed and then redone using slits of double the previous separation. Nothing else is changed. If the approxmation sin Q = Q holds, what happens to the angle between t
An excited hydrogen atom with an electron in the n = 5 stateemits light having a frequency of 6.90 x 10^14 s^-1. Determine the principal quantum level for the final state in thiselectronic transiti
Laser light of 589nm weavlengthis shown through parallel slits forming a series of maximum on a screen 4.20m away. If the distance between the central maximum and the first order maximum is 1.67 cm,
How many collisions does a single Ar atom make in 1.0 s when the temperature is 25 degrees Celcius and the pressure is (a) 10 atm, (b) 1.0 atm, (c) 1.0 μatm?
In a Young's double slit experiment, a 5th order maximum occurs at an angle of 1.422 degree. If the screen is 3.9m from the slit and the slit separation is 0.135mm, what weavlength being used?
A 1.0 dm^3 glass bulb contains 1.0 x 10^23 H2 molecules. If the pressure exerted by the gas is 100 kPa, what are (a) the temperature of the gas, (b) the root mean square speeds of the molecule
The element indium exists naturally as two isotopes.113In has a mass of 112.9043 amu, and 115In has a mass of 114.9041 amu. The average atomic mass of indiumis 114.82 amu. Calculate the percent
Ammonium chloride , NH4, is a very soluble salt . 300g of ammonium chloride is dissolved in 600 ml of what . What is the molar concentration of the solution?
An air-track glider attached to a spring oscillates with a period of 1.50 s. At t=0 s the glider is 5.50 cm left of the equilibrium position and moving to the right at 39.9 cm/s.
The objects volume is determined by displacement of water in a 100mL measuring cylinder (±5%): the volume reading before the object is immersed is 52.4mL, and after immersion the reading is 8