Answer:

Explanation:
From the question we are told that:
Power 
Voltage 
USA-standard 
Applying A step down transformer
Generally the equation for a Transformer is mathematically given by



Therefore
She can use a turns ratio of 2
A. Thermal energy
Thermal energy is heat energy, therefore the hotter a solid is the more thermal energy it has.
C. Volume
When an object gets hotter, it expands. This is becuase the particles vibrate more and so are less compact.
The answer to this question is A.
Since Astronaut and wrench system is isolated in the space and there is no external force on it
So here momentum of the system will remain conserved
so here we can say

initially both are at rest
so here plug in all values


so here the astronaut will move in opposite direction and its speed will be equal to 0.20 m/s
Answer:
3.05×10⁵ Nm²C⁻¹
Explanation:
According to Gauss' law,
∅' = q/e₀............... Equation 1
Where ∅' = net flux through the surface, q = net charge, e₀ = electric permittivity of the space
From the question,
Given: q = 2.7 μC = 2.7×10⁻⁶ C,
Constant: e₀ = 8.85×10⁻¹² C²/N.m²
Substituting these values into equation 1
∅' = (2.7×10⁻⁶)/(8.85×10⁻¹²)
∅' = 3.05×10⁵ Nm²C⁻¹