True. yes the core muscles stabilize and protect the spine.
Answer:
three times
Explanation:
Heat added is calculated according to the following equation
Q = mcΔT
where Q is the heat added
c is the specific heat capacity (of lead for the purposes of this question)
ΔT is the temperature change in Kelvin or degree Celsius
Q1 for heating lead = mc(373K-298K) = 75mc
Q2 for heating copper = m(3c)(373-298) = 225mc = 3(75mc) = 3Q1
So, Speed of light in Rock salt is 1/1.54 times speed of light in vacuum. Therefor Speed of light in Rock salt is less [1.94 x 10⁸m/s ] compared to speed of light in vacuum =C = 3 x 10⁸ m/s.
