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Calculate the ratio of the drag force on a jet flying at 1140 km/h at an altitude of 10 km to the drag force on a prop-driven transport flying at half that speed and altitude. The density of air is 0.38 kg/m3 at 10 km and 0.67 kg/m3 at 5 km. Assume that the airplanes have the same effective cross-sectional area and drag coefficient C.
Bowling balls can be made from a variety of substances and are required to have a circumference of roughly 27.0 inches. calculate the thickness of the shell
A hand-pumped water gun is held level at a height of 0.65 m above the ground and fired. Find the gauge pressure of the water gun's reservoir at the instant when the gun is fired
A 1.80 m length of wire is held in an east-west direction and moves horizontally to the north with a speed of 14.9 m/s. Calculate the induced emf between the ends of the wire
Two slits are spaced 0.300mm apart and are placed 0.75m from a screen. evaluate the wavelength of the light
A lump of putty with a mass of 0.210 kg and a speed of 0.830 c collides head-on, What is the mass of the system after the collision
A bowling ball (mass = 7.2 kg, radius = 0.14 m) and a billiard ball (mass = 0.47 kg, radius = 0.028 m) may each be treated as uniform spheres. What is the magnitude of the maximum gravitational force that each can exert on the other?
You and the friend each drive 47.0 km. You travel at 87.0 km/h; your friend travels at 98 km/h. How long will your friend wait for you at the end of trip.
After 35 minutes of running, at the 9km points in a 10km race, you find yourself 100 m behind the leader and moving at the same speed. what should your acceleration be if you are to catch up by the finish line? assume that the leader maintains a c..
What average force athletes legs apply on a ground
Can Somone please help me out????A 63.0 m length of insulated copper wire is wound to form a solenoid of radius 2.3 cm. What maximum energy is stored in the inductor
A 12.0 micro F capacitor is connected to a power supply that keeps a constant potential difference of 22.0V across the plates. By how much did the energy change during the insertion
a record is turning at the rate of 33 r.p.m. when the 45 r.p.m. button is pressed. what is the angular acclereration of the record
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