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A father racing his son has three-fifths the kinetic energy of the son, who has two-fifths the mass of the father. The father speeds up by 2.5 m/s and then has the same kinetic energy as the son.
(a) What is the original speed of the father?
(b) What is the original speed of the son?
During a rain storm, rain comes straight down with a velocity Vi = -15 m/s, find the average force exerted by the rain on the roof during a 3 second time interval
Person a is 20 ft to the right of person b. Person a recieves a ball and throws it 18.9 m away, angle of 25 degree celcius to the right horizontal, what is his average velocity(magnitude and direction) if he takes a straight path
Compute the distance of two point's p1 and p2 in the x-y plane with the following Cartesian coordinates: p1= (-5m, +8m), p2= (+3m, +2m). Draw the position vectors into appropriate-points.
A particle moves along the x axis unset the influence of a stationary object. The force exerted on the particle is given bu F=8x^3, where f is in newton's and x is in meters. if x=0 is taken to be the zero of potential energy, then the potential e..
A proton accelerates from rest in a uniform electric field of 625 N/C. At one later moment, its speed is 1.25E+06 m/s. Over what time interval does the proton reach this speed
Calculate the minimum amout of work (in joules) required to freeze one liter of water originally at temperature T = 20 degrees celsius
The distance between two telephone poles is d = 52.0 m. How much tension does the bird produce in the wire
Find the position of an object in front of a screen to obtain an image of size twice larger than its original size on the screen.
An electron moves from the initial position r = (0.1m)I to final position r=(0.2m)j. what is the surface charge density (i.e. charge per area) on the inner surface of the conducting sphere
The mass of the Moon is 7.35 × 10^22 kg, whereas that of Earth is 5.98 × 10^24 kg. The average distance from the center of the Moon to the center of Earth is 384,400 km.
Sirius has a luminosity of 8.4 * 10^27 Watts and a mass of 2.1 times the mass of the Sun, How much hydrogen does Sirius convert into helium each second
Two farmers are standing on opposite sides of a very large empty field that is 520.6 m across. What is the temperature of the air
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