Author Question: Ernest Rutherford tested Thomson's model by directing a beam of beta particles, at a thin gold foil. ... (Read 181 times)

renzo156 · **on:** Jul 29, 2018

Ernest Rutherford tested Thomson's model by directing a beam of beta particles, at a thin gold foil.

Indicate whether the statement is true or false

Question 2

A string is wrapped tightly around a fixed pulley that has a moment of inertia of 0.0352 kg m2 and a radius of 12.5 cm. The string is pulled away from the pulley with a constant force of 5.00 N. As the string unwinds the pulley begins to rotate.

What is the speed of the string after it has unwound 1.25 m? A) 2.09 m/s
B) 2.36 m/s
C) 1.18m/s
D) 3.18 m/s
E) 4.95 m/s