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A 0.14 meter string clamped at both ends under a tension of 16 N has a fundamental frequency of 135 Hz. What is the mass density of the string
You have a dozen eggs at home, and you know that with them you can make 100 muffins. If you find that half of the eggs have gone bad and can't be used, how many muffins can you make. Express your an
Two trains on separate tracks move toward each other. Train 1 has a speed of 125 km/h; train 2 a speed of 84.0 km/h. What is the frequency heard by the engineer on train 1
A train sounds its horn as it approaches an intersection. The horn can just be heard at a level of 54 dB by an observer 10 km away. What is the average power generated by the horn
Two 20.0-g ice cubes at -21.0 °C are placed into 235 g of water at 25.0 °C. Assuming no energy is transferred to or from the surroundings, calculate the final temperature of the water after
Water is flowing through a pipe with a constriction. The area of the narrow section is one-half the area of the wide section. what is the velocity of the fluid in the narrow section
A compound is 42.9% C, 2.4% H, 16.7% N, and 38.1% O, by mass. Addition of 6.00 grams of this compound to 50.0 ml benzene, C6H6 (d = 0.879 g/mL), lowers the freezing point from 5.53 to 1.37 degrees c
A 30.0 cm long string is fixed at both ends. If standing waves are formed, what is the wavelength of the fundamental mode
A pendulum is made with a 4.0 kg mass suspended at the end of a thin rod. What is the length of the thin rod
A 2.0 kg mass is connected to a spring with a spring constant of 9.0 N/m. What is the period of this simple harmonic motion
What is the number average degree of polymerization at the theoretical gel point which is predicted by the theory? (10 points) Hint: Use the regular definition of the number average degree of polyme
A system of 1219 particles, each of which is either an electron or a proton, has a net charge of -6.640×10-17 C. How many protons are in this system (exactly)
A very thin sheet of plastic (n=1.65) covers one slit of a double-slit apparatus illuminated by 640nm light. What is the (minimum) thickness of the plastic
If you add a solvent called "dioxane" to water, a homogenous mixture forms. Dioxane and water have the same boiling point (100oC). How do you explain that the mixture of the two compounds shows a bo
An airplane is cruising along in a horizontal level flight at a constant velocity, heading due west. If the weight of the plane is 2.6´104 N, what is the net force on the plane
What mass percent sucrose (C12H22O11)should be present in an aqueous sucrose solution to raise the boiling point to 100.00 degrees celsius at this pressure
The LiAlH4 reaction with ketones and that you must use a anhydrous aprotic solvent with it because of how violent it reacts with water and alcohols, What WOULD actually happen if it reacted with an
Monochromatic light falling on two slits 1.9×10?2mm apart produces the fifth-order fringe at an 8.9? angle
Find the speed an alpha particle requires to come within 2.6 ? 10-14 m of a uranium nucleus
Just as you are about to start making them, you get a call saying that the number of people coming to the meeting has doubled! Your original recipe called for three eggs. How many eggs do you need t
Consider a system consisting of two long, concentric solenoids. The larger solenoid has current running in counter clockwise fashion. Find the magnetic field strength inbetween the solenoids. positiv
How many milliliters of a 0.150 M magnesium hydroxide solution are needed to neutralize 1.985 L of a hydrochloric acid solution that is 0.5408 M
The E' is an unstable particle, with a mean lifetime on 2.5x10^-10s. What is the minimum uncertainty in this particles energy
A horizontal pipe shown in the figure has a cross-sectional area A1 = 37.5cm2 at the wider portions and A2 = 9.40cm2 at the constriction. Find the flow speed at the wide portion