A solid sphere of radius 25 cm is positioned at the top of an incline that makes 26◦ angle with the horizontal. This initial position of the sphere is a vertical distance 1.9 m above its position when at the bottom of the incline. The sphere is released and moves down the incline. 25 cm M µ ℓ 26◦ 1.9 m Calculate the speed of the sphere when it reaches the bottom of the incline if it rolls without slipping. The acceleration of gravity is 9.8 m/s 2 . The moment of inertia of a spherewith respect to an axis through its center is 2 5 M R2 . Answer in units of m/s.
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Physics, 22.06.2019 10:30
Carbon is allowed to diffuse through a steel plate 15 mm thick. the concentrations of carbon at the two faces are 0.65 and 0.30 kg c/m^3 fe, which are maintained constant. if the preexponential and activation energy are 6.2 x 10-7 m2 /s and 80,000 j/mol, respectively, compute the temperature at which the diffusion flux is 1.43 x 10^-9 kg/m^2 -s.
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Physics, 22.06.2019 23:00
The gun from the crime scene shows tool marks where the serial numbers are ground off. there are also tool marks on the bullets left behind. what information can the tool marks on the bullets and gun provide about the crime? what type of evidence does this information provide, individual or class?
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Physics, 23.06.2019 02:30
Intro: a solid ball of radius rb has a uniform charge density ρ. part a: what is the magnitude of the electric field e(r) at a distance r> rb from the center of the ball? express your answer in terms of ρ, rb, r, and ϵ0. part b: what is the magnitude of the electric field e(r) at a distance r express your answer in terms of ρ, rb, r, and ϵ0. part c: let e(r) represent the electric field due to the charged ball throughout all of space. which of the following statements about the electric field are true? check all that apply. e(0) = 0 e(rb)=0 limr→∞e(r)=0 the maximum electric field occurs when r=0 the maximum electric field occurs when r=rb the maximum electric field occurs as r→∞.
Answers: 1
Physics, 23.06.2019 03:50
In a star, nuclear fusion occurs in the a. photosphere. b. corona. c. radiative zone. d. core.
Answers: 2
A solid sphere of radius 25 cm is positioned at the top of an incline that makes 26◦ angle with the...
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