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An object of 2.7 kg is moving in a plane, having its x and y coordinates given by x = 3t^2 - 2 and y = 2t^3 + 2, where x and y are in meters and t is in seconds. Determine the magnitude of the total
A normal breath takes in about 1.0L of air. Assume air has anaverage molar mass of 28.8 g and its density is .97g/mol. How many molecules of air do you take in each breath?]
The arm is outstretched having a mass of 4.2 kg. The hand at the end of arm holds a 6 kg mass. The arm is increased 15 degrees above the horizontal. i) Determine the torque about the shoulder due to
Explain why the reaction among the peroxydisulphate ion and iodide is slow and what type of reaction is this? Explain why.
Determine the centripetal accelerations at each of the given points due to the rotation of Earth about its axis. (i) The point on Equator of Earth (ii) The North Pole
Determine the molarity of a solution of glycerol which is made by dissolving the 30.00 mL glycerol at 15degrees Celsius in the enough water to make 275.00 mL of solution.
Briefly explain what chemical test will distinguish calcium chloride (CaCl2) from the calcium carbonate (CaCO3).
A light source moves in the direction of a receiver with speed v When the source emits light having a frequency f_0, determine the frequency of the received signals?
Determine the pH of a solution made by adding the 15.00g of sodium hydride (NaH) to enough water to make the 2.500 L of solution.
Determine the numbers of grams of solute are present in the 50.0 ml of 0.4888M K2CR207b) If 4.00 g of (NH4)2 S0 4 is dissolve in enough water to produce the 400ml of solution, calculate the molarity
A space probe is departing the solar system at 0.27 c, moving directly away from the Earth. This emits radio pulses at the rate of 80 per minute. At what rate are the pulses received at the Earth?
Interstate 5 in California enters San Joaquin Valley through the mountain pass called Grapevine. What angle roadway makes with horizontal?
Write down the two balanced equations leading to the formation of boron oxide when the reaction of boron trifluoride with sodium borohydride leads to the formation of sodium tetrafluoroborate and B2
Determine the magnitude of the electric field at the point (6.50 - 8.30 + 7.00) m if the electric potential is provided by V = 9.70xyz^2, where V is in volts and x, y, and z are in meters?
Determine the numbers of mL of 0.127M H2SO4 are required to neutralize 0.180 g of NaOH? If 56.6 mL of BaCl2 solution is required to precipitate all the sulphate ion in a 750 mg sample ofNa2S
Take the potential of the negative plate to be zero. When the potential halfway among the plates is then +5.6 V, determine the electric field (in V/m) in the area between the plates?
The AC generator in the AC capacitor circuit makes a maximum potential difference across the capacitor of 175 V and an utmost current of 22.8 A. The frequency of the generator is around 977 Hz. When
If 43.0 mL of 0.220 M HCl solution is required to neutralize a solution of Ca(OH)2 determine the numbers of grams of Ca(OH)2must be in the solution?
At a specific time t, the current through the resistor consists of its maximum value of 12.3 A, and then starts to fall. Just 0.00573 s later, the current via the resistance has fallen to 10.7 A. De
By submerging the system in a certain liquid we find out that the number of interference minima has raised to 45. Determine the index of refraction of the liquid?
When a sample which is having 1.150 g of iron ore is treated with 50mL of HCl the iron dissolves in the acid to form a solution of FeCl3. The FeCl3 solution is diluted to 100mL and the concentration
What is the pH of a solution containing hydrochloric acid which is having 25 mg/L? What happened if the acid was hypochlorous acid (HOCl) instead?
To tighten a spark plug, it is suggested that a torque of 15.2 N•m be exerted. When a mechanic tightens the spark plug having a wrench which is 24.8 cm long, determine the minimum force essenti
Suppose the cost of the car is $15,000. With continuous compounding, determine number of years it would take to double cost of car at the annual inflation rate of 5%.
What would the OCL concentration in mg/L be at 25°C if a water containing 0.5000mg/L of HOCl has the pH adjusted to 7.0?