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Jet fighter planes are launched from aircraft carriers with the aid of their own engines and a catapult. If in the process of being launched from rest, the thrust of a jet's engines is 2.30 105 N and after moving through a distance of 90 m the plane lifts off with a kinetic energy of 3.90 107 J, what is the work done on the jet by the catapult?
___ J
A pendulum of mass 0.25 kg and length L= 1.0 m is attached to a line which is fixed at point P, determine the force of tension in the line
A candle is placed 13.38 cm in front of a convex mirror. When the convex mirror is replaced with a plane mirror, Find the focal length of the convex mirror
After hitting a long fly ball that goes over the right fielder's head and lands in the outfield, If the player comes to rest at third base, how much work was done on the player by friction
strikes the wooden block of a ballistic pendulum, as shown. The block has a mass of 270 g. Find out the speed of the bullet/block combination immediately after the collision.
The Sun is a low mass star and so would never have the core fusion reactions of massive stars. Yet, the Sun has iron in its atmosphere, as well as gold, silver and other elements much heavier than iron and why?
A wire carrying a current of 2.10 A is bent into the shape of a square loop of side length 5.92 cm and is placed in the xy-plane. What is the torque on the wire loop
A silt of width a is illuminated bymonochromatic light of wavelength 650nm at normal incidence. Calculate the value of a , when the first minimum falls at an angle of diffracction 30 degree
An airplane is flying with a velocity of 95 at an angle of 19 above the horizontal. When the plane is a distance 111 m directly above a dog that is standing on level ground, suitcase drops out of luggage compartment.
A 50.0 kg skier is at the top of a slope. At the initial point at the top is 25.0 m vertically above point at the bottom. find the change in Potential energy of the skier-Earth system as the skier goes from top to bottom
A laser light passing through a double slit creates a diffraction pattern with maxima 1 cm apart. what is the distance between adjacent minima
Iced tea is made by adding ice to 2.4 kg of hot tea, initially at 70?C. How many kg of ice, initially at 0?C, are required to bring the mixture to 10?C? (Lf = 3.33×105 J/kg, cw = 4,186 J/kg•? C)
As a car approaching you driver lays on the horn. The horn has an actual frequency of 350Hz but you hear the horn as 390 Hz. What is the speed of the car.
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