1.)the microwaves are absorbed by the water molecules in the cocoa. this causes the water molecules to vibrate very fast.
2.)this fast vibration causes the molecules to heat themselves up by means of bumping into each other (friction).
Answer : The average value of current is 
.
Explanation :
It is given that,
Net charge, q = 5 C
Time, t = 0.05 s
The electric current is defined as the rate of change of electric charge.
or
The average current is .
Hence, this is the required solution.
Answer:
12.495m/s
Explanation:
Horizontal displacement is the range of the projectile motion.
The range is expressed as;
R = 2U/g
U is the speed at which the rock is thrown (initial speed)
g is the acceleration due to gravity.
Given
R = 255cm = 2.55m
g = 9.8m/s²
Required
Speed U
Substitute the given parameters into the formula as shown;
2.55 = 2U/9.8
Cross multiply
2U = 2.55×9.8
2U = 24.99
U = 24.99/2
U = 12.495m/s
Hence the speed that you thew the rock is 12.495m/s
The answer is 18000 J
I hope this helps!^^ , if you need the work to be shown please tell me, I hope you have a great day!^^
