Commercial airplanes are sometimes pushed out of the passenger loading area by a tractor. the 1800 kg tractor exerts a force of 1.95 104 n backward on the pavement, and the system experiences forces resisting motion that total 2400 n. if the acceleration is 0.240 m/s2, what is the mass of the airplane in kilograms? calculate the force (in n) exerted by the tractor on the airplane, assuming 2100 n of the friction is experienced by the airplane.
Answers: 3
Physics, 21.06.2019 23:30
In which of the following cases is work being done on an object? question 2 options: pulling a trailer up a hill carrying a box down a corridor suspending a heavy weight with a strong chain pushing against a locked door
Answers: 2
Physics, 22.06.2019 13:00
What effects result when there is an impact between earth and an asteroid? check all that apply. a.massive flooding. b.extinction of many life forms.c.major earthquakes change in average global temperature.d. giant dust cloud
Answers: 3
Physics, 22.06.2019 20:40
Abasketball star covers 2.65 m horizontally in a jump to dunk the ball. his motion through space can be modeled precisely as that of a particle at his center of mass. his center of mass is at elevation 1.02 m when he leaves the floor. it reaches a maximum height of 1.90 m above the floor and is at elevation 0.910 m when he touches down again. (a) determine his time of flight (his "hang time"). (b) determine his horizontal velocity at the instant of takeoff. (c) determine his vertical velocity at the instant of takeoff. (d) determine his takeoff angle. (e) for comparison, determine the hang time of a whitetail deer making a jump with center-of-mass elevations yi = 1.20 m, ymax = 2.45 m, and yf = 0.750 m.
Answers: 1
Physics, 22.06.2019 21:50
As microwave light travels through a liquid, it moves at a speed of 2.2 x 108 m/s. if the frequency of this light wave is 1.1 x 108 hz, what is the wavelength of this microwave?
Answers: 2
Commercial airplanes are sometimes pushed out of the passenger loading area by a tractor. the 1800 k...
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