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At one instant of time the first particle with a charge of -2.50 µC is located at x = 0 and y = +8.70 cm, and the second particle with a charge of 7.80 µC is located at x = 0 and y = -8
Natural gas is primarily methane, CH4, and is used to heat homes. A typical home is approximately 2000 ft2 and the ceilings are 8 ft high. The following data may be helpful:
(a) over what period of time did the flux increase? (b) If the current had been only 20A, how long would the flux increase have taken?
A 1.719 g sample of a CaCO3 mixture is thermally decomposed, evolving CO2. After the reaction, the mixture has a mass of 1.048 g. How many grams and moles of CO2 gas are evolved?
A fisherman notices that wave crests pass the bow of his anchored boat every 4.0 seconds. He measures the distance between two crests to be 5.5m. How fast are the waves traveling?
Make a rough plot of pH versus milliliters of acid added for the titration of 50.0 mL of 1.0 M NaOH with 1.0 M HCl. Indicate the pH at the following points, and tell how many milliliters of acids a
A radio controlled car transmitter produces a 240 milliWatt signal. The car will work if the received signal is at least 20 microWatts/meter^2. Determine the maximum distance you can drive the car a
What data would be required to determine the absolute entropy of O2 at STP? After the data is acquired what calculations would be necessary to get the result?
Two workers hold a heavy pail. Its mass is unknown. One worker exerts a 220N force at 137 degrees from vertical. The other worker exerts a 170N force. What is the weight of the pail?
A mixture containing only BaO and CaO weighs 2.00g. The oxides are converted to the corresponding mixed sulfates, which weigh 4.00g. Calculate the weight percent Ba and Ca in the original mixture.
The solubility of aspirin in ethanol is approximately 40g/100mL at room temperature. If you had a 100% yield how many milliliters of ethanol would you need to dissolve your product for the recrysta
How much oxygen is required to support the aerobic biodegradation of the BOD5 material in a storm water + sewage overflow situation that involves a 24 h overflow of 2 500 gallons/hour into a receivi
Find the amount of time it takes for the target mass (m = 1kg) to raise its temperature by 100K if the current of the beam is I = 20µA. Note that the specific heat of iron is c = 500J/kg K, an
If k = 50 N/m, m = 0.50 kg, d = 10 cm, and the coefficient of kinetic friction between the block and the horizontal surface is equal to 0.25, determine the speed of the block when it first passes th
The conversion of diamond to graphite is a thermodynamically favorable process. Suggest a reason why diamond does not change to graphite spontaneously.
A cart of mass 2.3 kg is moving with a velocity of 15.2 m/s. It makes a head-on perfectly inelastic collision with a stationary cart B with mass 8.1 kg causing them to travel with a velocity 10.94 m
The heat capacity of iron is 0.449 J/g·K. A blacksmith is hammering a 261 g horseshoe that has been heated to 1200 K. To cool the horseshoe, the blacksmith tosses it into a bucket containing
A very massive object traveling at 100 m/s in the +z direction strikes a very light object that is initially at rest. If the collision is totally elastic, what is the velocity of the heavier object?
Clothing has a static coefficient of friction against steel in the range 0.60 to 1.0 and a kinetic coefficient in the range 0.40 to 0.70. What is the minimum rotational frequency in rpm, for which t
What is the maximum concentration of iodide ions that may be in solution to achieve the best separation possible?
She is at rest relative to the spacecraft just before catching the 2.9 kg book. Find the astronaunts velocity just after she catches the book.
A pendulum with a lenght of L=2.00m is pulled back to an angle of 30 degrees as is then released. What is the maximum velocity of the pendulum bob?
How many grams of sodium sulfate will be formed if you start with 200grams of sodium hydroxide and you have an excess of sulfuric acid?
Sodium bicarbonate is often used as an antacid to neutralize excess hydrochloric acid in an upset stomach. How much hydrochloric acid in grams can be neutralized by 3.5 g of sodium bicarbonate?
An electron moves in a circular path perpendicular to a constant magnetic field with a magnitude of 2.50 mT. The angular momentum of the electron about the center of the circle is 3.00 x 10-25 J&mi