The electric force between charged bodies decreases by a factor equal to the relative permittivity, ie:
F ∝ 1/ε
F = electric force, ε = relative permittivity
Find the scaling factor of F due to the change in ε:
k = 1/(0.9/0.45) = 1/2 = 0.5
Multiply the original F by k to find the new F:
F = 0.8N×k
F = 0.8N×0.5
F = 0.4N
Answer:
13 seconds
90 seconds
Explanation:
=Velocity of sidewalk = 1.2 m/s
=Velocity of woman = 1.6 m/s
Distance to travel = 36 m
Time = Distance / Speed
Time taken by the woman if she walks in the same direction the sidewalk is moving is 13 seconds
Time taken by the woman if she walks opposite to the direction the sidewalk is moving is 90 seconds
A. Conduct an exam. Thomas might have a drug dependence.
(Please mark Brainliest! :D)
Answer:
The ax versus t graph stays in the range of 2.5 to 3 m/s2 for the first 2 seconds or so, and then it drops quickly to just below 0 m/s2. This corresponds well with the slope of the vx graph: relatively constant positive slope for the first 2.5 seconds, and then zero (and even negative) slope afterwards.
Explanation: Edmentum