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A proton with v = 374 m/s is moving through a region in which the magnetic field is B = 2.8 T. what angle does the protons velocity make with B
An engine is built to extract power from the temperature difference in the ocean. what is the maximum theoretical efficiency of such an engine
Suppose that you wish to fabricate a uniform wire out of 0.850 g of copper. Assume the wire has a resistance R = 0.800 ?, What will be the diameter of the wire
A 2500lb car collides with a 25,000 lb truck. What force is exerted on the car by the truck
If a pure R isomer has a specific rotation of -120.0 degrees, and a sample contains 81.0% of the R isomer and 19% of its enantiomer, what is the observed specific rotation of the mixture
A football player runs the pattern given in the drawing by the three displacement vectors A, B, and C. find the angle q that the resultant vector makes with the east direction
A 30 N block is pulled along a horizontal surface by a 10 N force parallel to the surface. evaluate the coeffient of kinetic friction
Now assume that you started with only 1.80 g of sodium benzoate. Assuming that the reaction proceeds to form benzoic acid, what would your theoretical yield be. Use two decimal places.
A block is on a rough horizontal surface. A horizontal force of 5N is applied to the block. What is the frictional force exerted on the block
When you bend your knee, the quadriceps muscle is stretched. What size force does the femur exerts on the kneecap if the tendons are oriented as in the figure and the tension in each tendon is 60 {\rm
The condensate from a steam distillation contains 8g of an unknown compound and 18g of water. The mixture steam distilled at 98 C. What is the molecular weight of the unknown
A baseball and a bowling ball are both rolled off a level table at the same time. which will hit the ground first
Iodobenzene(C6H5I, bp 188C) steam distills at 98.2. How many molecules of water are required to carry over 1 molecule of iodobenzene. How many grams os water per gram of iodobenzene
In the Bohr model of the hydrogen atom, an electron in the 7th excited state moves at a speed of 4.47 104 m/s in a circular path having a radius of 2.59 10-9 m
Assuming that you start with 2.00 g of sodium benzoate and 5 mL of 3 M HCl, and assuming that the reaction proceeds to form benzoic acid, what would your theoretical yield be
Assuming that you start with 2.00 g of sodium benzoate and 5 mL of 3M HCl, how many molar equivalents of HCl are you using? Use two decimal places.
All particles in the mixture have a uniform spherical radius of 0.094 mm. a) Calculate the mass of a single particle of Na2SO4 and the number of Na2SO4 particles in the mixture.
How are the following aspects of a reaction affected by the addition of a catalyst. 1) activation energy of the reverse reaction A) Increased B) Decreased
Four charged particles are at the corners of a square of side, Determine the total electric force exerted on q
A child on a sled reaches the bottom of a hill with a velocity of 11.0, what is the magnitude of the average retarding force on the sled on the horizontal straightaway
Assuming that you start with 2.00 g of sodium benzoate and 5 mL of 3M HCL, what is the limiting reagent in this reaction. you may need to calculate mmoles of sodium benzoate first.
During a circus performance, a 70.3-kg human cannonball is shot out of an 15.4-m-long cannon. determine the average net force exerted on him in the barrel of the cannon
A falling skydiver has a mass of 109 kg. What is the magnitude of the skydiver's acceleration
A certain reaction has an activation energy of 46.80 kJ/mol. At what Kelvin temperature will the reaction proceed 3.50 times faster than it did at 341 K
A supertanker (mass = 1.61E+8 kg) is moving with a constant velocity. Determine the magnitude of the resistive force exerted on the tanker by the water