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A 120-V motor has mechanical power output of 3.60 hp. It is 87.0% efficient in converting power that it takes in by electrical transmission into mechanical power. Find the current in the motor
The force lightly damped harmonic oscillator of mass, 0.062 kgs, driving force F0 = 4.4 N and linewidth 35 radians/second, Determine the new damping constant
A system with m = 0.026 kg , k = 35 N/m and b = 0.59 kg/s is driven by a harmonically varying force of amplitude 3.6 N. Find the amplitude of the steady-state motion
What is the linear speed of Saturn in its orbit about the sun? Give your answer in meters per second
A 1600·kg car traveling with a velocity of 6·m/s north collides head-on with a 3200·kg truck traveling with a velocity of 4·m/s south. What impluse is delivered to the tru
During a physics experiment, helium gas is cooled to a temperature of 20.0 K at a pressure of 0.150 atm, What are the mean free path in the gas
Mg + 2HCl --> MgCl2 + H2 For a mass of 0.013 g Mg and 5.0 mL of 1.00 M HCl, in a flask with V = 140.612 mL at 23.5?C. Calculate the initial and final pressure (atm).
What is the approximate K+ ion concentration in a 0.75 M K2SO4 solution? A) 0.375 M B) 0.75 M C) 1.25 M D) 1.50 M E) 2.25 M
During osmosis A) pure solvent diffuses through a membrane but solutes do not. B) pure solutes diffuse through a membrane but solvent does not. C) pure solvent and a solution both diffuse at the sam
A proton is at the origin and an electron is at the point x = 0.45nm , y = 0.35nm. Find the electric force on the proton
How many grams of sucrose (C12H22O11, 342.3 g/mol) would be needed to make 2.5 L of a solution with an osmotic pressure of 14 atm at 25°C? (R = 0.0821 L×atm/K×mol) A) 0.57 g B) 6.8 g
Calculate the edge length of a cube that has the same volume as a sphere of radius 4.0 cm. How much greater is the surface area of the cube than that of the sphere
What is the freezing point of a solution prepared from 50.0 g ethylene glycol (C2H6O2) and 85.0 g H2O? Kf of water is 1.86°C/m. A) 17.6°C B) -176°C C) -1.50°C D) 1.50°C E) -17.6&
Suppose there is an astronaut who is traveling at a significant fraction of the speed of light. How long does it take according to the astronaut in years
How would this change the experimental procedure for the conversion of CuSO4 to metallic copper
A suspension bridge is 62.0 m above the level base of a gorge. If you drop the stone, how long does it take for it to fall to the base of the gorge
General Chemistry The pH of a solution of NH3 and NH4Br is 8.90. What is the molarity of NH4Br if the molarity if NH3 is 0.016M
A car is driving directly north on the freeway at a speed of 100 km/h and a truck is leaving the freeway driving 79 km/h in a direction that is 33 degrees west of north. What is the magnitude and di
Write orbital diagrams to represent the electron configuration of carbon before sp3 hybridization
Upton Chuck is riding the Giant Drop at Great America. If Upton free falls for 2.6 seconds, what will be his final velocity and how far will he fall
An airplane accelerates down a runway at 3.20 m/s2 for 32.8 s until is finally lifts off the ground. Determine the distance traveled before takeoff
The absorbance at 340 nm was 0.427 in a 1.000 cm cuvet. The molar absorptivity for this compound at 340 nm is = 6130 M-1 cm-1. Calculate the concentration of compound in the cuvet
Four identical metallic spheres with charges of +2.2 µC, +6.2 µC, ?6.6 µC, and ?3.6 µC are placed on a piece of paper. What is the resulting charge on each sphere
How many grams of reactant are left over when 132.00g of propane are reacted with 96.0g of oxygen to form carbon dioxide
When point charges q1 = +7.7 µC and q2 = +5.7 µC are brought near each other, Determine the distance between the charges