We can’t answer this you needa to do the scale
Answer:
12 cm
Explanation:
We shall use Lens makers formula here which is as follows
Put μ = 1.5 , R₁ = 10 cm ,R₂ = - 15 cm ( according to sign convention )
= .5 x ( 15 + 10 ) / 15 x 10
=
F = 12 cm
Answer:
2.30 × 10⁻⁸ N if the two electrons are in a vacuum.
Explanation:
The Coulomb's Law gives the size of the electrostatic force between two charged objects:
,
where
- is coulomb's constant. in vacuum.
- and are the signed charge of the objects.
- is the distance between the two objects.
For the two electrons:
- .
- .
- .
The sign of is negative. In other words, the two electrons repel each other since the signs of their charges are the same.
Gravity.: Gravity is the force that acts at a right angle to the path of an orbiting object.
Answer:
B) both the amplitude of the motion and the weight of the ball
Explanation:
Time period of a pendulum is given by
where,
L = Length of pendulum
g = Acceleration due to gravity
The system here is similar to a simple pendulum
It can be seen that the time period depends on L and g.
Amplitude and weight are the factors that do not determine the time period.
Hence, the answer is B) both the amplitude of the motion and the weight of the ball