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Cable C requires 2 black, 1 white, and 2 red. If 100 black wires, 110 white wires, and 90 red wires were used, then how many of each cable were made?
A uniform electric field with a magnitude of 6270 N/C points in the positive x direction. Find the change in electric potential energy when a +12.5 µC charge is moved 5.16 cm in the following
Determine the equation of the directrix of the parabola which includes the origin, is symmetric about the y-axis and passes through (6, 3)?
A 0.40 kg mass attached to the end of a string swings in a vertical circle of radius 1.8 m. At an instant when the string makes and angle of 40 degrees below the horizontal the speed of the mass is
A 200 g object tied to a string 80 cm long travels in a vertical circle of radius 80 cm. At the top of the circle the speed of the object is 4.5 m/s. What is the tension in the string at this positi
Find the volume of the solid that lies within the sphere x^2+y^2+z^2=64, above the xy plane, and outside the cone z=7sqrt(x^2+y^2).
First draw the system with the x-y plane as the page you are drawing on and the y-axis as the vertical axis. Make the downward direction the positive y-direction and the positive x-direction to the
Define the terms maximus and minimum of a function. What is the formula that gives the x- coordinate of the vertex for a parabola?
A block of mass 5.0 kg is pulled across a horizontal surface at a constant speed by a force 14 N directed at 35 degrees from the horizontal. What is the coefficient of kinetic friction between the
A distant galaxy emits light that has a wavelength of 479.2 nm. On earth, the wavelength of this light is measured to be 481.6 nm. Find the speed of the galaxy relative to the earth. (Give your answ
Objects with masses of 200 kg and 500 kg are separated by 0.400 m. (a) Find the net gravitational force exerted by these objects on a 50.0 kg object placed midway between them.
How many grams of KOH must be dissolved in water to make 88.0mL of a solution, which will react with 113mL of 1.10 MCH3COOH?
Find the angular speed of the wheels in rad/min, convert miles to inches & hours to minutes: How many revolutions per minute do the wheels make?
A balloon with a volume of 5.87 L was filled with 2.21 mole of dry nitrogen at a temperature of 273 K. and a pressure of 705 mm Hg. What's the volume of the balloon (in L) if another 0.37 moles of g
By what angle does the current push the boat off its due east course? Your answer should be a positive angle less than \pi radians.
It has been suggested that rotating cylinders about 10 mi long and 5.0 mi in diameter be placed in space and used as colonies. What angular speed must such a cylinder have so that the centripetal ac
If the bug travels 65 cm around the circle from the 3 o'clock position, what angle measured in radians did the fan turn? Round to the nearest hundredth.
A drop of water weighing 645 mg condenses on a surface of leadblock weighing 65.1 that is initially at 5.0 degrees C. If the heat released during condensation goes only toward heating the metal,what
A 3.00-mol sample of oxygen gas is confined to a 4.95-L vessel at a pressure of 8.06 atm. Find the average translational kinetic energy of the oxygen molecules under these conditions.
What is the minimum amount (mol) of benzaldehyde and acetone necessary for an aldol condensation reaction if you need0.2 g of product to find melting point, and 0.2 g of product to doa derivative an
A cylinder contains a mixture of helium and argon gas in equilibrium at 170°C. (a) What is the average kinetic energy for each type of gas molecule?
Assuming that the wind sheild is flat and rectangular, what is its area if it is 1.50m wide and the bottom is 0.48m in front of the top?
A collapsible vessel with a volume of 40.0 L 1.31 mole of dry nitrogen at an unknown temperature and a pressure of 710 mmHg. When the 0.12 mole was added to the vessel, yhe volume changed to 42.3 L,
Starting 2 seconds after the speeder passes, the police car accelerates at 6.0m/s^2 for 6 seconds, and then maintains constant speed until it catches the speeding car. (a) How many seconds after the
A BMW of mass 2.6 103 kg is traveling at 42 m/s. It approaches a 1.1 x 103 kg Volkswagen going 24 m/s in the same direction and strikes it in the rear. Neither driver applies the brakes. Neglect the