Answer: 
Explanation:
Given
Length of the race track 
the radius of curvature of the track 
time taken to run on track is 
Speed of runner is

Centripetal acceleration is

Salt water offers the least electrical resistance.
<u>Explanation:</u>
Least electrical resistance indicates that any material which readily allows the electric current through itself, and shows more conductivity.
Here pure water doesn't contain any ions, so it is a bad conductor.
Wood and glass are also bad conductors of electricity.
Salt water contains ions, which conducts electricity which means it shows least electrical resistance.
<span>When temperature increases, particles in an object speed up, which means an increase in thermal energy. Since the particles are moving more now, the potential energy decreases, therefore kinetic energy increases.
Overall, when temp goes up, thermal energy goes up, which leads to an increase in kinetic energy.</span>
A.l and lll
<em>-</em><em> </em><em>BRAINLIEST</em><em> answerer</em>
Answer:
the answer is 10 task forces
Explanation:
A task force is composed for
A=1
B=1
C=1
D=2
if we form 10 work groups, we must multiply by 10 each quantity of workers
A=1x10, B=1x10, C=1x10,D=2x10
A=10, B=10, C=10, D=20
This is the total number of employees in all departments