subject
Physics, 12.04.2021 16:40 chasityn5648

Un bloque de 15 Kg se empuja una distancia de 7 m sobre un plano horizontal, con coeficiente de rozamiento 0,2, por una fuerza constante F paralela al plano horizontal a velocidad constante. ĀæCuĆ”l es el trabajo de la fuerza F?

ansver
Answers: 2

Another question on Physics

question
Physics, 22.06.2019 01:30
In a thunderstorm, charge builds up on the water droplets or ice crystals in a cloud. thus, the charge can be considered to be distributed uniformly throughout the cloud. for the purposes of this problem, take the cloud to be a sphere of diameter 1.00 kilometer. the point of this problem is to estimate the maximum amount of charge that this cloud can contain, assuming that the charge builds up until the electric field at the surface of the cloud reaches the value at which the surrounding air breaks down. this breakdown means that the air becomes highly ionized, enabling it to conduct the charge from the cloud to the ground or another nearby cloud. the ionized air will then emit light due to the recombination of the electrons and atoms to form excited molecules that radiate light. in addition, the large current will heat up the air, resulting in its rapid expansion. these two phenomena account for the appearance of lightning and the sound of thunder. take the breakdown electric field of air to be eb=3.00ăā€”106n/c. part a estimate the total charge q on the cloud when the breakdown of the surrounding air is reached. express your answer numerically, to three significant figures, using ďĀµ0=8.85ăā€”10Ć¢ā€™12c2/(nĆ¢ā€¹ā€¦m2) .
Answers: 2
question
Physics, 22.06.2019 06:40
Determine the change in width a, height b, thickness t when a plate is subjected to the uniform distributed load and is made of material having modulus of elasticity e=230 gpa and poisson's ratio Ī½=1/3. given : a=400 mm and b= 300 mm also the uniformly distributed load in downward y direction of plate is 2 mn/m and in the positive x direction is 3 mn/m and t=20 mm
Answers: 1
question
Physics, 22.06.2019 14:40
The experiment done in lab is repeated, using a ball that has unknown mass m. you plot your data in the form of f 2 versus m/l, with f in rev/s, m in kg, and l in m. your data falls close to a straight line that has slope 3.19 m/(kg Ā· s2). use g = 9.80 m/s2 and calculate the mass m of the ball.
Answers: 1
question
Physics, 22.06.2019 15:10
Where do magnetic lines of force enter earth?
Answers: 3
You know the right answer?
Un bloque de 15 Kg se empuja una distancia de 7 m sobre un plano horizontal, con coeficiente de roza...
Questions