Answer:
The resultant displacement is the sum of displacement vectors
Explanation:
The vector sum of two or vectors is know as resultant .
The resultant displacement is the result of when displacement vectors are added.
If the vector quantities are same then the two vectors can be added.
The resultant velocity is obtained by adding two or more velocity vectors.
In displacement vector the position will change.
The direction traveled is the direction of the displacement vector .
The magnitude of the displacement vector is the distance from starting point to the ending point.
The brightening of the night sky by light scattered from artificial outdoor lighting is called <span>Light Pollution</span>
There's no such thing as one balanced force or one unbalanced force.
If ALL of the forces in a GROUP of forces acting on the same object
all add up to zero, then we say that the GROUP of forces is balanced.
If they don't, then the GROUP of forces is unbalanced.
Two or more forces can be balanced or unbalanced.
One force can't.
Answer:
The position is 8.18cm from the mirror.
Nature is b=virtual
Size is 1.82cm
Explanation:
Note that for a convex mirror, the image distance and the focal length are negative;
Given
Object height H0 = 4cm
object distance u = 18cm
Radius of curvature R = 30cm
Since f = R/2
f = 30/2
f = -15cm
Recall that:
Since the image distance is negative, this shows that the image is a virtual image.
To get the size:
Answer:
F(Mars) = 2 G m M / (4 R)^2 force of Sun on Mars
F(Merc) = G m M / R^2 force of force of Sun on Mercury
R = distance of Sun from Mercury, m = mass of Mercury
F(Merc) / F(Mars) = 4^2 / 2 = 8
