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Given an isothermal expansion of gas from 1.0 to 2.0 cubic meters in a piston-cylinder arrangement where pressure varies according to P= 1.2 atm -.062 atm/ m^3 V, How much work was done by the gas
In Larry Niven's science-fiction novel Ringworld, a rigid ring of material rotates about a star. The inhabitants of this ring world live on the starlit inner surface of the ring, What is the length
A dioxin-contaminated water source contains 0.081% dioxin by mass. How much dioxin is present in 4.2 L of this water? (Assume that the density of the solution is 1.01 g/mL.)
Calculate the frequency of the light emitted when an electron in a hydrogen atom makes each of the following transitions.
An alpha particle (the nucleus of a helium atom formed by 2 protons and 2 neutrons with charge q = +2(1.6 x 10-19 C), Calculate the acceleration of the alpha particle
Twenty-five milliliters of liquid nitrogen (density = 0.807g/mL ) is poured into a cylindrical container with a radius of 11.9cm and a length of 17.2cm . The container initially contains only air at
Phosphorus-32 is used in the form of Na2HPO4 in the treatment of chronic myeloid leukemia, among other things. (a) The isotope decays by beta-particle emission. Write a balanced equation for this proc
A wire carries a current of 0.665 A. This wire makes an angle of 55.5° with respect to a magnetic field of magnitude 4.92E-5 T, What is the length of the wire
Now assume the particle is a proton and that its initial velocity is 254.7 m/s to the right. If the magnitude of the magnetic field is 0.98 T
A bottle of wine consists of an 11 weight percent solution of ethanol (C2H5OH) in water. If the bottle of wine is chilled to -20oC, will the solution begin to freeze? Kfp for water is 01.86 oC?m-1
The velocity of a ball changes from <9, -7, 0 > m/s to < 8.92, -7.12, 0 > m/s in 0.02 s, due to the gravitational attraction of the Earth and to air resistance. What is the rate of chang
The alpha-particles ionize molecules in the air, allowing it to conduct an electric current. When smoke particles enter, the conductivity of the air changes and the alarm buzzes. (a) Write the equat
A person holds a rifle horizontally and fires at a target. The bullet has a muzzle speed of 200m/s, The air temp is 72 degrees Fahrenheit. What is the distance to the target
A current of 0.0100 A is passed through a solution of rhodium sulfate, causing reduction of the metal ion to the metal. After 3.00 h, 0.038 g of Rh has been deposited. What is the charge on the rhod
How much heat in kilojoules is required to warm 10.0 g of ice, initially at -10.0^\circ C, to steam at 110^\circ C. The heat capacity of ice is 2.09 {\rm J}/{\rm g} ^\circ {\rm C} and that of steam
What is the ratio of C-14 in a wooden object made in 100 BC to the one made of the same kind of wood in 700 BC? Half life of carbon-14 is 5730 years.
To what volume should you dilute 150 mL of an 8.00 M CuCl_2 solution so that 55.0 mL of the diluted solution contains 5.9 g CuCl_2
A nozzle with a radius of 0.250 cm is attached to a garden hose with a radius of 0.950 cm, Calculate the maximum height to which water could be squirted if it emerges from the nozzle
When the plane atats to accelerate for take off, a man is holding the pocket watch steady by its 20cm chain, Estimate the takeoff velocity of the plane
How much heat is required to raise the temperature of 42.5 g of water from its melting point to its boiling point? Express your answer numerically in kilojoules.
A block of mass 2.50 kg is pushed 2.00 m along a frictionless horizontal table by a constant 16.0 N force directed 25.0° below the horizontal, Determine the work done by the force of gravi
Hydrochloric acid (HCl) reacts with sodium carbonate (Na2CO3), forming sodium chloride (NaCl), water (H2O), and carbon dioxide (CO2). This equation is balanced as written: 2HCl(aq)+Na2Co3(aq) --- 2N
an electron is released from rest at the negative plate of a parallel plate capacitor and accelerates to the positive plate, What is the kinetic energy of the electron just as it reaches the positive
What is the percent-yield of H2 In the reaction below when an equimolar mixture of CH4 and CO2 with an initial total pressure of 20.0 atm reaches equilibrium at 1200. K, at which Kp = 3.548 x 106
Usain Bolt is running a 100m dash. He accelerates to top speed over the first 45 m, then runs at a constant speed for the last 55 m, What is his top speed