Answer:
Part a)

Part b)

Explanation:
Part a)
Initial value of magnetic flux is given as


so we have

Final flux through the loop is given as

now EMF is given as



Part b)
If magnetic field is constant while Area is changing
So EMF is given as



Answer:
The efificiency is 0,25 of the machine (25%). See the explanation below
Explanation:
We calculate the efficiency with this formula:
Efficiency = energy obtained/energy supplied= 300 Joule/1200 Joule
Efficiency= 0,25
Efficiency(%) = 0,25 x100 = 25%
Answer: sorry here’s the answers, I didn’t feel like typing it all
Explanation:
The answer is A. 1 atm.
Solution:
Pressure in terms of height can be calculated using the formula:
P = pgh
where: p = density (kg/m^3); g = gravitational constant (m/s^2); h = height (m)
Using SI units: P = 1000(kg/m^3)*9.81(m/s^2)*10(m) = 98,100 Pascals
Convert Pascals to atm:
98,100 Pa (1 atm/101325 Pa) = 0.968 atm = rounded up to 1 atm