Answer:
40
Explanation:
Mechanical advantage = effort arm / load arm
MA = 20 cm / 0.5 cm
MA = 40
Answer:
when you bring two objects of different temperatures together, energy will always be transferred from the hotter to the cooler object. The objects will exchange thermal energy, until thermal equilibrium is reached, until their temperatures are equal. We say that heat flows from the hotter to the cooler object.
I don't understand that I'm sorry what grade is that
Answer:


Part b)

Explanation:
magnetic field due to external source is given as

area of the loop is given as



Now we have





now we need to find the time at which voltage is 0.1 Volts so we have


Part b)
If magnetic field is inclined at an angle of 30 degree with the normal of the loop then

now we know that induced EMF is given as



