A 0.75-kg sphere is released from rest and is moving 5.0 m/s after falling 2.0 m in a viscous medium. What is the change in mechanical energy caused by the force the viscous medium exerts on the sphere during this descent?

a. -6.1 J
b. -4.6 J
c. -5.3 J
d. -6.8 J
e. -2.7 J


C

Physics & Space Science

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(a) What is the work function for the material in eV? (b) From her data one determines Planck's constant to be what?

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There is no induced emf in a wire that is moving parallel to a magnetic field if the wire is moving in the direction of the magnetic field

Indicate whether the statement is true or false

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Fill in the blank(s) with correct word

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Angular and Linear Quantities: A rolling wheel of diameter of 68 cm slows down uniformly from 8.4 m/s to rest over a distance of 115 m. What is the magnitude of its angular acceleration if there was no slipping?

A. 1.8 rad/s2 B. 0.90 rad/s2 C. 5.7 rad/s2 D. 11 rad/s2

Physics & Space Science