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A rifle with a muzzle velocity of 470 m/s shoots a bullet at a target 49.6 m away. How high above the target must the rifle barrel be pointed to ensure that the bullet will hit the target? Neglect a
A soccer ball is kicked from the ground with an initial speed of 19.6 m/s at an upward angle of 33.4°. A player 60 m away in the direction of the kick starts running to meet the ball at the inst
If the concentration of the orginal solution of 1.0 MCu(No3)2 was actually less than 1.0 M, how would this affect the slope and intercept of the plot of E vs ln (1/[Cu+2])?
A ball is shot from the ground into the air. At a height of 9.1 m, the velocity is observed to be v = (7.4 i + 6.3 j) m/s, with i horizontal and j upward. (a) To what maximum height does the ball ri
An astronaut is rotated in a horizontal centrifuge at a radius of 5.0 m. (a) What is the astronaut's speed if the centripetal acceleration is 5.0g?
A 255mL sample of 0.00016M Pb(NO3)2(aq) wasmixed with .00023M Na2SO4(aq). Providethe formula for the possible precipitate that could form? Will aprecipitate be expected to form? Provide a complete b
Calculate the amount of energy released per gram of hydrogennuclei reacted for the following reaction. The atomic masses are11H, 1.00782 amu, 21H,2.01410 amu, and an electron, 5.4858 x 10-4 amu.
What is the mechanism when acetanilide reacts with bromine by an electrophilic substitution mechanism to produce bromoacetanilide?
Snow is falling vertically at a constant speed of 8.0 m/s. At what angle from the vertical do the snowflakes appear to be falling as viewed by the driver of a car traveling on a straight road with a
If a temperature increase from 20.0deg.C to 36.0deg.Ctriples the rate constant for a reaction, what is the value of the activation barrier for the reaction?
Find the car's position relative to the base of the cliff when the car lands in the ocean
A skier is accelerating down a 30.0° hill at 4.00 m/s2 . (a) What is the vertical component of her acceleration?
If 10 mL 0.10 M Ba(NO3)2 ismixed with 10 mL 0.10 M KIO3, a precipitate forms. Which ion will still be present at appreciable concentration in theequilibrium mixture if Ksp for barium iodate is verys
How long will it take her to reach the bottom of the hill, assuming she starts from rest and accelerates uniformly, if the elevation change is 305 m?
The equilibrium constant Kc for the reaction: has the valueof 4.00 at 500K. If a mixture of 1.00 mol CO and 1.00 mol H2Ois allowed to reach equilibrium at this temperature in a 1.00Lflask, calculate
A projectile is shot from the edge of a cliff 165 m above ground level with an initial speed of vo=105 m/s at an angle of 37.0° with the horizontal (a) Determine the time taken by the projectile t
A Hollywood daredevil plans to jump the canyon (d=58 m, h=17 m) on a motorcycle. Assume he desires a 3.1 second flight time. (a) What is the correct angle for his launch ramp?
The complete neutralization of 0.0527 moles of monoprotic acid with excess NaOH evolves 2.82kJ of heat. What is the molar heat of neutralization of the acid with NaOH from his data.
The concentration of carbon monoxide in an urban apartment is48 μg/m3. What mass of carbon monoxide in grams is present in a roommeasuring 9.5 * 12.5 * 20.0 ft?
A train moving at a constant speed of 58.0 km/h moves east for 45.0 min, then in a direction 56.0° east of due north for 13.0 min, and then west for 75.0 min. What is the average velocity of the
What must be the molarity of an acetic acid solution if it has thesame percent ionization as 0.100 MHC3H5O2 (propionic acid,Ka=1.3 x 10-5)?
If a microwave oven took75 seconds to heat 1.00 cups of water from 15.8 to95.9oC, how many photons per minute does the ovenemit?
A third charge of +5.3 micro-Coulombs is placed at x = -0.27 m, y = 0 m. At what angle is the total electric filed is directed at the the point x = 0 m, y = +0.14 m if measured counter-clockwise fro
What would be the effect of carrying out the sodium iodide in acetone reaction with the alkyl halides using an iodide solution half as concentrated