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Assume ellipse has has foci (±c, 0) and sum of distances from any point P(x,y) on ellipse to foci is 2a. Illustrate that coordinates of P satisfy equation of the ellipse.
The initial velocity of a car, Vi, is 45 km/h in the positive x-direction. The final velocity of the car, Vf, is 66 km/h in a direction which points 75 degrees over the positive x-axis. Determine t
Supposing a spherical shape, determine the mass of the comet? (The escape speed for an object at the surface of Earth is 11.2 km/s).
Find height of water in cylinder when volume of water in cylinder is 8.3 cubic centimeter. Illustrate calculation using both formulas.
The objects having masses of 155 kg and 455 kg are separated through 0.420 m. (i) Determine total gravitational force applied by these objects on a 54.0 kg object positioned midway between them.
Compute the average density of the white dwarf when the Sun were to collapse to a radius of 6.00 x 106m.
Smaller 3 hp pump fills same tank in 12 hours. Pumps are utilized together to start filling this tank. After 4 hours, 8 hp pump breaks down. How long will it take smaller pump to fill tank?
A satellite having mass 200 kg is launched from the site on Earth's equator to an orbit at 185 km over the surface of Earth. (The mass of Earth is around 5.98 x 1024 kg, and the radius of the Earth
The lab has 60cm^3 of a solution which is 40% HCl acid. How many cm^3 of the 15% solution of HCl acid must be mixed with 60cm^3 of 40% acid to get the solution of 25% HCl? How much of 25% solution i
Determine the resulting gravitational force applied by the other two objects on the object at the origin.
If, rather, the ball is revolved so that its speed is 4.0 m/s, determine at what angle does the cord make with the vertical?
Determine the number of times, louder is the intensity of sound at a rock concert in comparison with that of a whisper, when the two intensity levels are 110 dB and 3 dB, correspondingly?
The flash of lightning is seen, and resulting thunderclap is hear 3 seconds later. If speed of sound avenges 1,100 feet per second, how far away is storm?
Biometric measurements point out that each hand usually makes up about 1.25% of body weight. Determine horizontal force which must her wrist apply on her hand?
Find Quantities whose values differ and Quantities whose values are constant. Contractor pours concrete at the rate of 2 cubic feet per minute.
Find out the greatest possible angular speed the neutron star can encompass so that the matter at its surface on the equator is merely held in orbit through the gravitational force.
Determine the time interval which the vaulter is brought to rest through a .0218m layer of saw dust which compresses to .054m when he lands.
Find if number of seconds since Kacie passed 100-meter point on track is proportional to distance Kacie ran past the 100-meter point.
Determine the speed of sound via the marble. The bulk modulus is 5x10^10 N/m^2 and its density is around 6200 kg/m^3.
A projectile of mass 0.750 kg is shot straight up by an initial speed of 18.0 m/s. When the projectile increases to a maximum height of only 11.8 m, find out the magnitude of the average force due t
If April uses four cups of water, how many tablespoons of lemonade mix will she require to assure that '2 cups: 3.5' ratio of water to lemonade is maintained? Describe.
A ball of 1.0 kg on the end of a string is whirled at the constant speed of 2.0 m/s in a horizontal circle of radius 1.5 m. Determine the work done by the centripetal force through one revolution?
A basketball of 0.60 kg is dropped out of a window which is 6.1 m above the ground. The ball is caught by a person whose hands are 1.5 m above the ground. Determine how much work is done on the ball
Determine for what wavelength of light will the first-order dark fringe be viewed at the similar point on the screen?
A 1.50 long, 550 ropes pulls a 5.00 block of ice across the horizontal, frictionless surface. The block accelerates at around 2.00. Determine how much force pulls forward on (i) the ice, (ii) the ro