Explanation :
There are some basic metric conversions.
Prefix Multiple of 10
centi 
Kilo 1000
deka 10
milli 
hecto 100
deci 
For example :

Answer:
a. 125 kJ
Explanation:
Her total energy is the same as the potential energy she had at the top of the hill:
PE = mgh
= (52 kg)(9.8 m/s^2)(245 m) = 124,852 J
≈ 125 kJ . . . . matches choice A
_____
After skiing down 112 m, some of her initial energy is converted to kinetic energy, and some remains as potential energy. We assume the ski slope is essentially frictionless, and air resistance is negligible.
Answer:
Temperature in Fahrenheit will be 124.52°F and in kelvin 324.4 K
Explanation:
We have given temperature in of silver in degree Celsius as 
We have to convert this temperature in Fahrenheit and kelvin
For Fahrenheit
Temperature in Fahrenheit = 
For kelvin
In kelvin = 51.4+273 = 324.4 K
So temperature in Fahrenheit will be 124.52°F and in kelvin 324.4 K
<span>To relate or measure the by the quantity of something, not against the quantity</span>