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After the collision, the pendulum and object stick together and swing to a maximum angular displacement, theta. (a) Find the initial velocity of the pendulum. (b) Find the maximal angle, theta
How much limestone in kilograms would be required to completely neutralize a 6.2x10^9 L lake containing 6.5x10^-3 g of H2SO4 per liter?
A nickel compound NiL2(where L is a halide) has a molar absorptivity of 1250(mol/L)^-1cm^- at 425nm (max) when a 50.00mL solution containing 0.00109g of this compound was analyzed using the same pro
If the fluoride is consumed as sodium fluoride (45.24% ), what amount of sodium fluoride contains the recommended amount of fluoride?
Ethanol has a vapor pressure of 7.9 x 103 Pa at 25ºC. Determine the free energy difference between ethanol in the liquid state at 25ºC and ethanol vapor at 1 bar pressure at 25ºC.
how fast can you drive on a horizontal roadway around a right turn of radius 30.0 m before the cup starts to slide? If you go too fast, in what direction will the cup slide relative to the dashboard
A solution is 40% acetic acid by mass. The density of this solution is 1.049 g/mL. Calculate the mass of pure acetic acid in 140mL of this solution at 20C.
After the collision, the 5-kg cart is moving to the right with a speed of 1.5 m/s. What is the final velocity of the 3-kg cart?
Lactose is a sugar most commonly found in milk and is made up of carbon, hydrogen and oxygen. After analyzing a sample of it there was found to be 42.1 % of carbon, 6.46% of hydrogen and 51.4% of ox
(a) Do the satellites move with acceleration? Write down the second law of Newton for their motion. (b) Using (a) write down the expression for the period of rotation (orbital period), T, as a funct
No electrons are emitted from the surface of metallic Cs until the frequency of the radiation reaches 4.50 x 10^16 Hz. Find the energy required to remove the electron from the metal surface.
The block is initially at rest at its equilibrium position when a force (magnitude P = 80 N) acting parallel to the surface is applied to the block. What is the speed of the block when it is 13 cm f
A 1.800 g sample of phenol C6H5OH was burned in a bomb calorimeter whose total heat capacity is 11.66 kJ/C degree. The temperature of the calorimeter plus contents increased from 21.36 C degree to 2
A certain string just breaks when it is under 25 N of tension. A boy uses this string to whirl a 2-kg stone in a horizontal circle of radius 3 m. The boy continuously increases the speed of the ston
A 2.0-kg block slides on a frictionless 15 degree inclined plane. A force acting parallel to the incline is applied to the block. The acceleration of the block is 1.5 m/s^2 down the incline. What is
The density of phosphorus vapor at 310 degrees celcius and 775 mmHg is 2.64g/L. what is the molecular formula of the phosphorus under these conditions?
(a) Why does the dime slide outward? (b) What is the coefficient of static friction between the dime and the record?
Most chips will easily corrode when immersed in a salt solution similar to the one required to use the BARC sensor- yet why is the BARC biosensor is able to withstand corrosion in such a strong salt
In a blimp the gas pressure is 605.2mm and outside air temperature is -5.8 degrees Celsius. The volume of the gas chamber in the blimp is 199,630 cubic feet.
Consider light that is refracted by a prism shaped like an equilateral triangle. The incident ray is parallel with the prism's base. What is the total deflection of the ray, given that the index of
Two parallel metal plates have area A = 255 cm2 and are separated by l = 0.50cm. They have a potential difference of 0.25 V. Find the numerical value of the electric field. What are the charge dens
The machine flash a warning for the technician if the information to configure the launch is incorrect (Explain why). Show how you calculate the angle of particle one and the angle of particle two.
Calculate the pH of a buffer prepared by dissolving 240.0g of ammonium chloride and combining it with 400.0 mL of 12.0M ammonium hydroxide (NH4OH, but you can treat it as 12.0 M NH3) and diluting to
Consider a uranium nucleus to be a sphere of radius R = 7.4 × 10-15 m with a charge of 92e distributed uniformly throughout its volume. (a) What is the electric force exerted on an electron wh
The force generated in a living cell by elongation of a single actin filament is approximately 1 pN. Calculate the work done by this actin filament when it moves the cell membrane 0.10 micron.