Answer:
c)both
Explanation:
The laws of reflection hold true for all the reflecting surfaces either spherical or plane. Therefore, the plane mirror, concave mirror and the convex mirror all will follow the laws of reflection.
Solution :
Part A .
Given : The 
and 
components of the vector, d = 
degree left of -axis.
So the component is = -4 x sin (29°) = -1.939 km
component is = 4 x cos (29°) = 3.498 km
Part B
Given : The and components of the vector, 
, 
So the component is = -2 cm/s
component is = 0
Part C
Given : The and components of the vector, 
left of -axis.
So the component is = -13 x sin (36°) = -7.6412 
component is = -13 x cos (36°) = -10.517
Answer:
L = 169.5 m
Explanation:
Using Ohm's Law:
V = IR
where,
V = Voltage = 1.5 V
I = Current = 10 mA = 0.01 A
R = Resistance = ?
Therefore,
1.5 V = (0.01 A)R
R = 150 Ω
But the resistance of a wire is given by the following formula:
where,
ρ = resistivity = 1 x 10⁻⁶ Ω.m
L = length of wire = ?
A = cross-sectional area of wire = πr² = π(0.6 mm)² = π(0.6 x 10⁻³ m)²
A = 1.13 x 10⁻⁶ m²
Therefore,
<u>L = 169.5 m</u>
You cannot have power without voltage.
The equation is: Power = voltage times current.
If either voltage is zero or current is zero, there is no power.
Ohm’s Law: Voltage = Current times resistance is also closely related.
If there is zero resistance, power is also zero
