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In a particular Millikan oil-drop apparatus, the plates are 2.25 apart. The oil used has a density of 0.845 , how many excess electrons did it contain
One cubic meter of water flowing over Niagara Falls in New York drops 83.7 meters. how much heat energy would the water have
If you place an electric charge in an electric field it will feel a force due to the electric field, Describe the direction of the force
The rate constant of a first-order reaction 7.60 *10^-4 s^-1 at 350 degree celcius. If the activation energy is 134 KJ/mol, what is the temperature at which its rate constant is 9.70 *10^-4 s^-1
A small sphere with a mass of 1.0 g is suspended at the end of an insulating string of length 50 cm within a uniform horizontal electric eld of 12,000 N/C. What is the value of the charge on the sm
A freezer has a coefficient of performance of 2.40. The freezer is to convert 1.98kg of water at 26.0 oC to 1.98kg of ice at -5.00 oC in 1 hour. How much electrical energy is consumed by the freezer
For the following reaction KClO3---->KCl+1/2 O2 assign oxidation states to each element on each side of the equation. reactants and products. Which element is oxidized? Which element is reduced
If there are two point along the x-axis, positive q to the right and -q to the left of the orgin. Both with the distance a/2 from the orgin, Find the electric field at that point without using deriva
What actions/policies might make the region more prosperous and what role should the federal government play to assist these efforts in Atlantic Canada?
Mixtures of helium and oxygen are used for scuba diving. For a particular dive, 46 liters of O2 at 25 degrees celsius and 1.0 atm and 12 liters of He at 25 degrees celsius and 1.0 atm are pumped int
A bowling ball (mass= 7.2 kg, radius= 0.14m) and a billiard ball (mass= .44 kg, radius= .028m) may each be treated as uniform spheres. find the magnitude of the maximum gravitational force
Give the charge and full ground-state electron configuration of the monatomic ion most likely to be formed by the element.
If you find that it takes 0.1050 moles of sodium hydroxide to reach the equivalence point how many moles of acetic acid were present at the beginning of the titration
If a Joe pulls a 37-kg crate at a 0.62 m/s^2 using a horizontal strap, when 250N of friction acts on it, what is the Tension in the strap
A plane flies parallel to the ground at a speed of 1.15 times the speed of sound. What is the altitude of the plane
Choose the correct Lewis electron-dot symbols that depict the monatomic ions formed from each of the reactants, and predict the formula of the compound the ions produce.
A homemade capacitor is assembled by placing two 10 in pie pans 11 cm apart and connecting them to the opposite terminals of a 9 V battery. Estimate the charge on each plate
How would you incorporate inpatient and outpatient services and how would you handle mental health services - what sort of financial structure would it have
Molecules which are polar overall exhibit a property called a dipole moment. Which of the following possesses polar bonds but has no dipole moment
Atoms in a solid are in continuous vibrational motion due to thermal energy. find the approximate period of oscillation of a typical atom
In a railroad yard, a 3.5×10^4 kg boxcar moving at 6.0 m/s is stopped by a spring-loaded bumper mounted at the end of the level track
A 0.954-kg toy car is powered by four AA batteries (6.00 V total) connected directly to a small DC motor. compute the average current supplied to the car\'s motor?
Find the mean and standard error of the x distribution and what is the population-What is the sample
An 85 kg man lowers himself to the ground from a height of 5.6 m by holding onto a rope that runs over a frictionless pulley to a 75 kg sandbag