Answer:
(a) The electrostatic force on the 3.78-nC particle is
along the
positive x axis.
(b) The electrostatic force on the 1.95-nC particle is
along the
negative x axis.
Explanation:
a.) The electrostatic force on the 3.78 nC particle is
where
is the 1.95 nC charge at the origin, and
is the 3.78 nC charge at 0.08 m from the origin
r is the distance of 0.08 between the charges
is the relative permittivity of 8.854 ×
.
Therefore
in the positive x direction.
b.) The electrostatic force on the 1.95 nC particle is the same as the electrostatic force on the 3.78 nC particle except that its direction is in the negative x- axis direction.
Answer: In the planet there is life and the star is a store of energy where the planet gets its light, life and energy.
Explanation:
Answer:

Explanation:
Orbital velocity is the speed that a body that orbits around another body must have, for its orbit to be stable. For orbits with small eccentricity and when one of the masses is almost negligible compared to the other mass, like in this case, the orbital speed is given by:

Where M is the greater mass around which this negligible body is orbiting, r is the radius of the greater mass and G is the universal gravitational constant. So:

Answer:
x is vertical and y is horizontal
Explanation:
Answer:
W = 1418.9 J = 1.418 KJ
Explanation:
In order to find the work done by the pull force applied by Karla, we need to can use the formula of work done. This formula tells us that work done on a body is the product of the distance covered by the object with the component of force applied in the direction of that displacement:
W = F.d
W = Fd Cosθ
where,
W = Work Done = ?
F = Force = 151 N
d = distance covered = 10 m
θ = Angle with horizontal = 20°
Therefore,
W = (151 N)(10 m) Cos 20°
<u>W = 1418.9 J = 1.418 KJ</u>