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A fighter jet is launched from an aircraft carrier with the aid of its own engines and a steam-powered catapult. The thrust of its engines is 2.70 105 N. In being launched from rest it moves through a distance of 87 m and has a kinetic energy of 3.80 107 J at lift-off. What is the work done on the jet by the catapult?
A Chevy van going 15mph rear-ends a950-kg Ford Aspire that is stopped at a light. (After the collisionthey are both going in the same direction). Assume the Aspiredriver didn’t have the brakes on and that there’s nofriction/air resistance
a distant galaxy emits light that has a wavelength of 550.5 nm. on earth the wavelength of this light is measured to be
The flywheel of an automobile engine is a solid disk with a mass of 8.5 kg and a radius of 23 cm and is rotating at 3850 rpm. to what height would the flywheel be lifted
a motorist drives north for 32 min at 85 kmh and then stops for 15 min. he then continues north traveling 125 km for
If astronauts could travel at v= 0.950c, we on Earth would sayit takes (4.20/0.950) = 4.42 years to reach Aplha Centauri, 4.29light years away. How much time passes on the astronauts clocks
A 6.6-kg rock and a 4.7 × 10-4-kg pebble are held near the surface of the earth. Determine the magnitude of the gravitational force exerted on each by the earth
While preparing tea water in a mine shaft deep underground, you notice that water boils at 105 C. what is your depth below the surface
two point charges are located on the y axis as follows: charge q1 = -1.50nC at y1 = -0.550m , and charge q2 = 4.10nC at the origin, What is the magnitude of the net force
During a hard sneeze, your eyes might shut for 0.50s. If you are driving a car at 90 km/h during such a sneeze, how far does the car move during time.
q1. physics instructor wants to produce a double-slit interference pattern large enough for her class to see. for the
An iron casting containing a number of cavities weighs 23137.8 N in air and 19020.3 N in water. What is the total volume of all the cavities in the casting
A child's water pistol shoots water through a 1.8 mm-diameter hole. If the pistol is fired horizontally 78 cm above the ground, the squirt hits the ground 1.8 m away. What is the volume flow rate through the squirt? Ignore air resistance.
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