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A young woman on a skateboard is pulled by a rope attached to a bicycle. The velocity of the skateboarder is v = (4.6m/s )x, find the work the rope does on the bicycle
Two point particles of charge Q1 = 43 µC and Q2 = 89 µC are found to have a potential energy of 38 J. What is the distance between the charges
Given the following at 25°C and 1.00 atm: 1/2N2(g) + O2(g) ® NO2(g)DH0 = 33.2 kJ N2(g) + 2O2(g) ® N2O4(g)DH0 = 11.1 kJ Calculate the DH0 for the reaction below at 25°C. 2NO2(g) ®
Suppose both skaters are initially moving v, but one has mass m and the other 2m. What point do they rotate about after they meet? What is the linear velocity of this point? What is the angular velo
The following reaction is spontaneous only below 3000 K. What conclusions can be drawn regarding this reaction? A + B ® AB
A 350-kg roller coaster starts from rest at point A and slides down the frictionless loop-the-loop, How fast is this roller coaster moving at point B
Mass of isopentyl acetate formed at equilibrium is 126.68. Q: how much isopentyl acetate lost from theoretical yield by incomplete equilibrium.
Charged particles round a 1.7 km radius circular particle accelerator at nearly the speed of light. Find the centripetal acceleration of the charged particles
In a scientific test conducted in Arizona, a special cannon called HARP shot a projectile straight up to an altitude of 180.0 km. if the projectiles initial speed was 3.00 km/s, how long did it take
Estimate the electron drift velocity. Estimate the current density. Estimate the electric field in the wire.
How much heat would be released if 12.0 g of methane, CH4, was completely burned in oxygen to form carbon dioxide and water at standard state conditions
A spaceship is visiting Planet X. While descending to the surface, its rockets produce 25 kN of upward thrust and the spaceship's speed decreases at a rate of 0.15 m/s2. What is the mass of the spac
External forces compress 21 mol of ideal monatomic gas; during the process the gas transfers 15 kJ of heat to its surroundings, How much work was done on the gas
For which set of values of DH and DS will a reaction be spontaneous (product-favored) at all temperatures
Assuming that the total energy consumption scales in the same way as BMR, how many Calories are needed by the person weighing 150 lb
An object of heat capacity 100 cal/°C is initially at 30°C. Estimate the resulting entropy change of the universe
Does 4-Phenylphenol have a monosubstituted aromatic ring ( or also known as monosubstituted aromatic overtone band [msoab] )
A process occurs spontaneously and DSsystem < 0. Which statement below must be true?DSsurroundings > 0DSuniverse > 0The pressure is constant.Both (a) and (b) are correct.All of these answer
Given a barometric pressure of 756.0{rm mmHg} , calculate the pressure of gas sample (a) as indicated by the manometer
Air "breaks down" when the electric field strength reaches 3*10^6 N/C, causing a spark. How many electrons must be transferred from one disk to the other to create a spark between the disks
The sound level of a single vacuum cleaner is about 75dB and a television is about 55dB. What is the sound level number
An ideal gas is compressed isothermically by a force of 85 newtons acting through .24 meter. Calculate values of delta U and q.
The magnetic field between the poles of an electromagnet is 2.17 T. A coil of wire is placed in this region so that the field is parallel to the axis of the coil. How many turns are there in the coi
Components dropping 10, 20, 30, and 50 volts what is the V applied. What is the algebraic sum of the voltages around a closed loop
What should the mole percent of oxygen be in the diving gas for the partial pressure of oxygen in the mixture to be 0.21 atm, the same as in air at 1 atm