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A high-voltage transmission line carries 500 A at 700 kV for a distance of 100 miles. what is the power loss due to resistive losses
A tank of 0.5 m3 volume contains compressed air. A valve is opened and air escapes with a velocity of 220 m/s through an opening of 100 mm2 area. Find the rate of change of density of the air in the
The rate constant (k) for a reaction was measured as a function of temperature. A plot of ln k versus 1/T (in K) is linear and has a slope of -1.66 10^4 K. Calculate the activation energy for the re
Mary needs to row her boat across a 120{\rm m} -wide river that is flowing to the east at a speed of 1.5{\rm m/s}. how far downstream will she land
If a solution contains 28 g of potassium nitrate per 100 g of water at 25 degrees Celsius, is the solution unsaturated, saturated, or supersaturated
Suppose a car's brakes can produce an acceleration of -7 m/s2. what is the minimum distance necessary to stop the car
Write a paper on the causes and effects of water pollution in Lake Huron. The paper will be provided to the state's fish and game board as well as various committees for improving public health.
What is the role of vacuum filtration in this process of Recrystallization. How do you do it
A battery with an emf of 12.0 V shows a terminal voltage of 11.5V when operating in a circuit with two lightbulbs rated at 3.0 W, What is the battery's internal resistance
The legendary racehorse Secretariat won the 1973 Kentucky Derby with a time of 1 min 59.4 sec.The course is 1.25 mi long. Calculate the horse's average speed in mi hr -1.
It is 2734 mi between Phoenix, Arizona, and Philidelphia, Pennsylvania. What is this distance in km?
The blood buffer system is made up of H2CO3 and HCO3. Describe with the use of equations how this system responds to added H3O and to added OH.
What do patients expect from medical treatment and what leads people to seek treatment -How does a physician expect to be paid?
The speed limit on many Australian highways is 100 km hr-1. Convert this to miles hr-1 (round to nearest whole number)
If the rms speed of the molecules of a quantity of helium at temperature 142 K is the same as the rms speed of neon atoms at a second temperature
the current in a 30 meter wide river is 3 m/s towards the north. If you need to move straight across the river, how far downstream do you reach the shore
What differences are noticed when a acid or base is added to distilled water as compared to the buffer solutions
You've signed up for a trip to Mars. After being cooped up in the tight space capsule for months, you are very excited to finally arrive and take a standing leap straight upward. How high will you j
Describe, in as much detail as possible, the process of recrystallization as a method for purification of a solid. How does it work. What do you do
In a 6.5×10?3-m3 volume of ideal gas at the pressure of 2.7×106 Pa, How many molecules are in the sample
A 90 kg gentleman standing on slippery grass is pulled by his two rather unruly children.Overlooking friction, compute Pop's resulting acceleration
How do you make a supersaturated solution. How is this different than a "saturated" solution
Three men named Lewis, Miller, and Nelson fill the positions of accountant, buyer, and cashier in a department store. if the following statement are all true, which is each man's job?
During a running long jump, an athlete runs with a speed of 9 m/s horizontally and, upon take off, how far will the athlete jump
An 8.70-kg block slides with an initial speed of 1.51 m/s up a ramp inclined at an angle of 27.4 degrees with the horizontal. calculate the distance the block slides before coming to rest.