Physics, 26.07.2019 04:20 hdhdhd49jdhd
Amodel airplane of mass 0.6 kg is attached to a horizontal string and flies in a horizontal circle of radius 6 m, making 1.6 revolutions every 5 s. (the weight of the plane is balanced by the upward “lift” force of the air on the wings of the plane.) the accelaration due to the gravity is 9.81 m/s2 . find the speed of the plane. answer in units of m/s.
Answers: 2
Physics, 20.06.2019 18:04
The cement bag shown in the figure has a mass of 50 kg and the small pulley has a mass of 2 kg. if the cement bag is pulled upwards with an acceleration of 2 m/s^2, find the force f pulling the rope.
Answers: 2
Physics, 22.06.2019 03:30
The focal length of a relaxed human eye is approximately 1.7 cm. when we focus our eyes on a close up object, we can change the refractive power of the eye by about 16 diopters. (a) does the refractive power of our eyes increase or decrease by 16 diopters when we focus closely? explain. (b) calculate the focal length of the eye when we focus closely.
Answers: 3
Physics, 22.06.2019 05:30
What are similarities and differences of reflection, refraction, diffraction and absorption?
Answers: 1
Physics, 22.06.2019 08:00
What is the average speed of a car that travels 40mph for 1 hour and 60 mph in another hour will mark brainliest
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Amodel airplane of mass 0.6 kg is attached to a horizontal string and flies in a horizontal circle o...
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