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An xyzxyz coordinate system contains three charged particles: particle 1, q1=−q1=− 4.5 μCμC , at (4.0 mm, -2.0 mm, 0); particle 2, q2q2 = 11 μCμC , at (1.0 mm, 2.0 mm, 0); and an electron at at (-1.0 mm, 0, 0).
A railroad car of mass 2.00 × 10! 𝑘𝑔 moving at 3.00 m/s collides and couples with two coupled railroad cars, each of the same mass as the single car and moving in the same direction at 1.20 m/s. (a) What is the speed of the three coupled cars after the collision? (b) How much kinetic energy is lost in the collision?
Oxygen is required for the resynthesis of phosphocreatine because phosphocreatine uses glycogen to resynthesize ATP in the mitochondria and this process requires oxygen. phosphocreatine is resynthesized in the mitochondria, which requires oxygen to make ATP lactate concentrations inhibit phosphocreatine breakdown phosphocreatine is resynthesized in the cytoplasm, and uses oxygen ATP in the cytoplasm to resynthesize creatine and Pi
6. (Everyone) Before batteries for electric cars were reliable, hydrogen fuel cars were a possible alternative to gasoline powered cars. The engines reacted hydrogen gas in air to produce water vapor. Suppose that 10.0 moles of hydrogen reacted, how many moles of water vapor would be produced? (2 points) \(2 H_2 + O_2 \to 2 H_2O\) B C A (Regular) What would be the volume of this water vapor at STP (standard temperature and pressure)? (2 points)
Question 2 (Mandatory) (2 points) Saved How many nodes should you observe if a string is vibrating in its $n = 13$ fundamental mode? Your Answer: Answer
1. You are a relatively young, relatively healthy person. You are trying to decide whether it makes sense for you to buy health insurance or not. Based on extensive research the probability that you will incur various health expenditures over the next year is has estimated as follows. Expenditure ($) 0 200 500 1,000 2,000 5,000 10,000 100,000 Probability 0.2 0.2 0.3 0.2 0.05 0.03 0.015 0.005 b. What are your expected health expenditures over the next year? (3)
An unusually large crop of coffee beans might: increase the price of tea. increase the price of coffee. decrease the quantity of coffee consumed. increase the supply of coffee.
True or false: increasing the minimum wage to $15 will increase the number of workers employed at the minimum wage. True, because workers will have more money to spend False, because businesses need to increase the minimum wage even higher False, because businesses will hire less labor True, because many workers will want to work for $15/hr
Texts: pg 3. Hi, please help. Please do all the questions in the photo. I will give a thumbs up. Thanks! The density of lead is 1.13x10^3 kg/m^3 at 20.0°C. Find its density in kg/m^3 at 101°C. Use α = 29 x 10^-6 °C^-1 for the coefficient of linear expansion. Give your answer to at least four significant figures. HITT kg/m Need Help? A tank contains one mole of oxygen gas at a pressure of 6.60 atm and a temperature of 30.5°C. The tank, which has a fixed volume, is heated until the pressure inside triples. What is the final temperature of the gas? B A cylinder with a movable piston contains one mole of oxygen gas at a pressure of 6.60 atm and a temperature of 30.5°C. Now, the cylinder is heated so that both the pressure inside and the volume of the cylinder double. What is the final temperature of the gas? Need Help? In a student experiment, a constant-volume gas thermometer is calibrated in liquid nitrogen (-196°C) and in boiling ethyl alcohol (77°C). The separate pressures are 0.347 atm and 1.627 atm. Hint: Use the linear relationship P = A + BT, where A and B are constants. A) What value of absolute zero does the calibration yield? B) What pressure would be found at the freezing point of water? atm C) What pressure would be found at the boiling point of water? atm Need Help?
Bonita Co. uses a periodic inventory system. Its records show the following for the month of May, in which 73 units were sold. Units Unit Cost Total Cost May 1 Inventory 30 $8 $240 15 Purchases 28 11 308 24 Purchases 37 12 444 Totals 95 $992 Compute the ending inventory at May 31 and cost of goods sold using the FIFO and LIFO methods. FIFO LIFO Ending inventory at May 31 $ $ Cost of goods sold $ $