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A gallon of gasoline releases about 2.0*10^8 J of energy when it is burned. How many gallons of gas must be burned to release the same amount of energy as is released when 0.6 lb of235 (A) 92(Z) U u
In your testimony in court, will you say that the driver was obeying the posted speed limit?
A current I =15 A is directed along the positive x-axis and perpendicular to a magnetic field. A magnetic force per unit length of 0.12 N/m acts on the conductor in the negative y -direction. Calcul
A 66.0g hollow copper cylinder is 10.0cm long and has an inner diameter of 1.0cm.The current density along the length of the cylinder is 1.40*10^5 A/m^2. what is the current in the cylinder?
How high a tree would a 77.0 kg person have to climb to increase his gravitational potential energy relative to the ground by that amount?
When roads are icy, wet, or snowy, front-wheel drive cars (cars whose front wheels provide the force to accelerate the car forward) are generally more stable than rear-wheel drive cars (cars whose b
A uniform meter stick of mass M is pivoted on a hinge at one end and held horizontal by a spring (with spring constant k) attached at the other end. If the stick oscillates up and down slightly, wha
You may have measured the properties of a simple spring-mass system in the lab. Suppose you found ks = 0.8 N/m and m = 0.04 kg, and you observed an oscillation with an amplitude of 0.5 m.
A wire coil of negligible resistance has 1000 turns and has a diameter of 6.00 cm. A 1.00 kO resistor is connected to the coil. A uniform, time-varying magnetic field exists inside the coil, and is
A solution is prepared by dissolving 0.17 molAcetic Acid and 0.17 mole of ammonium chloride in enough water tomake 1.0 L of solution. What is the concentration of ammonia in the solution?
A 10-cm-long thin glass rod is uniformly charged to +50 nC. A small plastic bead, charged to - 5.1 nC , is 4.0 cm from the center of the rod. What is the magnitude of the force on the bead? What is
Standard solutions of calcium ion used to test for water hardnessare prepared by dissolving pure calcium carbonate,CaCO3, in dilute hydrochloric acid.
Assume that friction can be neglected and that the resulting oscillatory motion is simple harmonic motion. (a) What is the angular frequency of the motion?
From a data plot, the ΔH for the dissolution of a salt is+1.03 x 102 kJ/mol and the ΔS is + 311 J/molK. What is the free energy for the dissolution of the salt at 25Celsius?
The mass travels downward 25.3cm before stopping and returning. A) Determine the spring constant. B) What is its speed after it falls 5.00cm? What is the acceleration of the mass at the very bottom
For this solution calculate the volume required to prepare each of the following diluted solution given 15M NH3, need 2.0 L of 0.4M NH3
A 26 cm long solenoid consists of 5800 turns of wire wound uniformly. What current is needed to produce an 8.0 mT magnetic field inside the solenoid?
A particle, starting from point A in the drawing at a height h0 = 3.1 m, is projected down the curved runway. Upon leaving the runway at point B, the particle is traveling straight upward and reache
A solution containing Pt4+ is electrolyzed with acurrent of 3.60 A. How many minutes will it take to plate out 89.0 percent of the platinum in 0.550 L of a 0.0150 M solution ofPt4+?
A skateboarder moving at v = 5.4 m/s along a horizontal section of a track that is slanted upward by 48° above the horizontal at its end, which is h = 0.50 m above the ground. When she leaves th
A cyclopropane-oxygen mixture is used as an anesthetic. If the partial pressure of cyclopropane in the mixture is 330 mm Hg and the partial pressure of the oxygen is 1.0 atm, what is the total
Suppose a technician holds his hand near the device so that the axis of his 2.0-cm-diameter wedding band is parallel to the field. What emf is induced in the ring as the field changes?
How many liters of oxygen reacted at 21 degrees celcius and 101k Pa would be required to produce 1000kJ by this reaction?
calculate (a) the angular acceleration of the pottery wheel ,and (b) the time it takes the potter wheel to reach its required speed of 65 rpm
A long straight wire is held fixed in a horizontal position. A second parallel wire is 2.0 mm below the first but is free to fall under its own weight. The second wire is copper (density 8920 kg/m^