An airplane is flying in air with a density of 1.29 kg/m3. A pressure gauge measures the difference in pressure between a point on the nose of the airplane and a point on the fuselage. The pressure on the nose is higher by 60.0 kPa
What is the speed of the plane relative to the air? A) 295 m/s
B) 300 m/s
C) 305 m/s
D) 310 m/s
E) 315 m/s
C
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An object attached to one end of a string moves in a circle at constant speed. Which of the following is correct?
A. the object is accelerating as it moves B. the object's velocity is the same as its speed C. the object does not require a force to keep its state of circular motion D. if the string breaks, the object will keep its circular motion E. If the string breaks, the object will move Radially away from the center of the cicl
With a fixed force, you will impart the same acceleration to a body on the Earth and on the Moon
a. True b. False Indicate whether the statement is true or false
For interference to occur, which of the following must be true?
1.The light sources must be in phase and of different colors. 2.The light sources must be out of phase and have different wavelengths. 3.The light sources must be out of phase and monochromatic. 4.The light sources must be in phase and the same wavelength.
While the mantles of Jupiter and Saturn are made of liquid metallic hydrogen, the mantles of Uranus and Neptune are chiefly
A) water. B) rock. C) helium. D) methane. E) ammonia.