Answer:
yes
Explanation:
because motion is relevant
Answer;
= 2.34 x 10^-4 g pcbs
Explanation;
-A typical smelt has 1.04 ppm of PCB is great lakes.
Therefore;
The amount of PCB in a smelt in great leak can be calculated by multiplying the mass of smelt by the pcbs present in a smelt
= 225 g * ( 1.04/100000)
= 2.34 x10^-4 g pcbs
I believe the answer for 1) is
PEgrav = mass • g • height
PEgrav = m *• g • h
Answer:
Option D: Four times the original speed.
Explanation:
A centripetal force accelerates a body by changing the direction of the body's velocity without changing the body's speed.
The speed(v) is therefore constant, thereby making the magnitudes of the of the acceleration and the force constant.
The formula used to calculate the Centripetal force is given below:

where F represents the Centripetal force, m represents the mass of the moving body, v represents the speed or velocity at which the body is moving and r represents the radius.
Making the speed the subject of the formula: 
Therefore, when the radius (r) is changed to 4r, i.e r = 4r
speed(v) becomes 
After comparing, the difference between the speeds is Four times the original speed.
The hottest would be the O type and the coolest is M