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The position of a particle moving along the x axis is given in centimeters by x = 5.50 + 2.50t^3, where t is in seconds. Consider the time interval t = 2.00 s to t = 3.00 s.
In a diesel engine, the piston compresses air at 306 K to a volume that is 0.0622 of the original volume and a pressure that is 48.2 times the original pressure. What is the temperature of the air
When a 6.00-g sample of KCl is dissolved in water in a calorimeter that has a total heat capacity of 6.019 kJ·K-1, the temperature decreases by 0.230 K. Calculate the molar heat of solution o
61.0 mL of a 1.40 M solution is diluted to a total volume of 268 mL. A 134-mL portion of that solution is diluted by adding 187 mL of water. What is the final concentration? Assume the volumes are a
A blacksmith heats a 1.9 iron horseshoe to 460, then plunges it into a bucket containing 20 of water at 19. What is the final temperature?
On a very muddy football field, a 120 kg linebacker tackles an 75 kg halfback. Immediately before the collision, the linebacker is slipping with a velocity of 8.6 m/s north and the halfback is slidi
If the simulation does not give a precise quantitative reflection of Graham's Law, what could be done to improve the quantitative estimate of the simulation?
An aqueous solution contains 10% ammonium by mass and has a density 0.99 gcm-3 . Calculate hydroxyl and hydrogen ion concentration in this solution. if Ka for ammonium ion = 5.0 x 10^-10.
What is the elastic potential energy of the system when the 2.0-kg block is replaced by a 4.1-kg block?
A 67.0 kg base runner begins his slide into second base when moving at a speed of 3.7 m/s. The coefficient of friction between his clothes and Earth is 0.70. He slides so that his speed is zero just
A 47.0- person takes a nap in a backyard hammock. Both ropes supporting the hammock are at an angle of 16.0 above the horizontal. Find the tension in the ropes.
A carbon resistor is to be used as a thermometer. On a winter day when the temperature is 4.00, the resistance of the carbon resistor is 217.4 . What is the temperature on a spring day when the resi
What was the final temperature of the gold if the initial temperature was 22.0°C? The specific heat of gold is 0.129 J/(g·°C).
15.0 moles of gas are in a 8.00L tank at 24.6°C . Calculate the difference in pressure between methane and an ideal gas under these conditions. The van der Waals constants for methane are a=2.300L2
A superhero flies 156 m from the top of a tall building at an angle of 35 ? below the horizontal. What is the vertical component of the super-hero's displacement?
How many moles of sodium phosphate are required to react completely with 4.6 mol of calcium nitrate to form sodium nitrate and calcium phosphate?
Suppose a 64-kg boy and a 48-kg girl use a massless rope in a tug-of-war on an icy, resistance-free surface. If the acceleration of the girl toward the boy is 3.0 m/s2, find the magnitude of the ac
A baseball is thrown at an angle of 28 degrees relative to the ground at a speed of 25.6m/s. The ball is caught 55.3841m from the thrower. The acceleration due to gravity is 9.81m/s square. How lon
In a coffee-cup calorimeter, 1.70 g of NH4NO3 is mixed with 79.0 g of water at an initial temperature of 25.00°C. After dissolution of the salt, the final temperature of the calorimeter contents
Dilute solutions of NaCl, Na2SO4, and Na2S are available to separate the positive ions from each other. In order to effect separation, the solutions should be added in which order?
An electric dipole p makes an angle of 30° with a uniform electric field of magnitude 300 N/C. If the torque on the dipole is 3.00 × 10-12 N · m then calculate the magnitude of the
A sample of a gas in a cylindrical chamber with a movable piston occupied a volume of 4.626 liters when the pressure was 0.983 atm and the temperature was 27.2 °C. The pressure was readjusted to
A rock of mass 47 kg accidentally breaks loose from the edge of a cliff and falls straight down. The magnitude of the air resistance that opposes its downward motion is 252 N. What is the magnitude
A 160.0 g ball on a 70.7 cm long string is swung in a vertical circle about a point 184.0 cm above the floor. The string suddenly breaks when it is parallel to the ground and the ball is moving upw
If 80.0 g of ethylene and 125 g of HCl are allowed to react at atmospheric pressure and the volume change is -63.9 L? What is the value of (in kilojoules) for the reaction?