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An airplane is landing on the runway with a speed of 120 km/h. The runway is aligned exactly at S-N direction. However, wind blows on E-W direction (perpendicular to the runway) with a speed of 20 km/h. What is the final speed of the airplane?
A 115 V fish-tank heater is rated at 120 W, Calculate the current through the heater when it is operating
On a cool morning, while the temperature is 12.0 deg Celsius, you measure the pressure in your car tires to be 20psi. After driving 40.0 mi on the freeway, the temperature of your tires is 56deg Celsius. What pressure will your tire gauge now show..
The wavelength of the sound wave is measured to be 202 centimeters. What is the speed of sound in the substance in m/s?
When a fighter pilot makes a very quick turn, he experiences a centripetal acceleration. What is the minimum radius of curvature
A guitar string is74cm long and has a mass of 3.6 g. The distance from the bridge to the support post isL= 60 cm, and the string is under a tension of533N. What is the frequency of the second overtone
A resting bat sends out ultrasonic waves at 50 kHz towards an insect that is approaching the bat with a speed of 20.0 m/s. What is the frequency of waves heard by the insect?
if you wanted to store 10.0 j of potential energy in this spring. what would be its total length? assume that it continues to obey hooke's law
In a physics laboratory experiment, a coil with 250 turns enclosing an area of 13.4 cm2 is rotated in a time interval of 4.20×102s from a position, What is the average emf induced in the coil
The bullet emerges from the block with a speed of 200 m/s, and the block rises to a maximum height of 12 cm. Evaluate the initial speed of the bullet. V = 530 m/s
Two hockey players strike a puck of mass 0.169 kg with their sticks simultaneously, exerting forces of 1.17 103 N, compute the instantaneous acceleration of the puck
EMR is diffracted during a double slit experiment. The diffraction grating (600lines/cm), which is 2.00m away from the screen, produces a diffraction pattern
A dog on a merry-go-round undergoes a 1.2 m/s2 linearacceleration. If the merry-go-round's angular acceleration is .63rad/s2, how far is the dog from the axis of rotation?
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