i don't understand sorry ;(
Answer:
Explanation:
As we know that there is no external horizontal force on the cannon ball + performer
So here total momentum of the system must be conserved
so we will have
now from above equation we have
<span>A large body of air hats has similar properties of a temperature and moisture is an air mass.</span>
Answer:
100
Explanation:
Momentum (P) = Mass (M) × Velocity (V)
Momentum = 25kg × 4.0m/s
Momentum = 100kg m/s
The voltage at the end of the conductors is 12V
<u>Explanation:</u>
Given:
Resistance, R = 12Ω
Heat released, H = 144J
Time, t = 12s
Voltage, V = ?
According to joule's law:
H = I²RT
where,
I is the current
T is the time
R is the resistance
The above formula can also be written as:
where,
V is the voltage
On substituting the value in the formula we get:
Therefore, the voltage at the end of the conductors is 12V