Answer:
C momentum change
Explanation:
An impulse results in a change of momentum.
An impulse is a force action over a period of time.
Answer:
10 km
Explanation:
You can draw your problem out. You can use the pathagoran theorem to figure it out. So 
+ 
and then square root the answer which will be 
which equals to 10.
<span>Physicists use certain units to measure heat energy and electrical energy:
- Joule (Watt sec )
- Watt - hour
- Kilowatt- hour
- Calorie
Hope this helps!
</span>
Answer:
a = = 37.2V
b = 13.39MJ
Explanation:
Given that
L = 170 × 10³
r = d/2
= 10cm / 2 = 5 cm
current I = 100A
we are to find the potential drop across the cable
so, we can use ohm’s law
V = IR = I (ρL/A)
ρ = resistivity of the copper
= 1.72 × 10⁻⁸ Ω.m
A = πr²
V = I(ρL/πr²)
= 100 (( 1.72 × 10⁻⁸ * 170 × 10³) / ( π * 0.05²))
= 37.2V
(b)
Energy (loss) = Pt
Enery (loss) = IVt
3600s per hour
= (100A)(37.2V)(3600s)
= 13.39MJ
Answer:
<h3>The 28 loops wound on the square armature</h3>
Explanation:
Peak output voltage 
V
Area of square armature 
Magnetic field 
T
Angular frequency 
According to the law of electromagnetic induction,
Where 
number of loops of wire.
≅ 28
Thus, 28 loops of wire should be wound on the square armature.
