If a golf ball and a bowling ball are rolling at the same speed, the _________ ball has a greater momentum.
2 answers:
<u>Answer:</u> Bowling ball has a greater momentum than a golf ball.
<u>Explanation:</u>
Momentum is defined as the product of mass and velocity of an object. Mathematically,
where,
p = momentum of the object
m = mass of the object
v = velocity of an object
Momentum is directly dependent on mass and velocity of the object.
We are given that both the balls are moving with the same speed which means that the velocity of both the balls are same. So, the momentum will be dependent on mass of the ball only.
The ball having greater mass will have higher momentum than the ball having less mass.
As, mass of bowling ball is very high than the mass of the golf ball. Thus, it will have greater momentum.
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Answer:
On the magnitude of the charges, on their separation and on the sign of the charges
Explanation:
The magnitude of the electric force between two charges is given by
where
k is the Coulomb's constant
q1, q2 are the magnitudes of the two charges
r is the separation between the charges
From the formula, we see that the magnitude of the force depends on the following factors:
- magnitude of the two charges
- separation between the charges
Moreover, the direction of the force depends on the sign of the two charges. In fact:
- if the two charges have same sign, the force is repulsive
- if the two charges have opposite signs, the force is attractive
Answer:
Explanation:
Given that,
The instantaneous current in the circuit is giveen by :
We need to find the rms value of the current.
The general equation of current is given by :
It means,
We know that,
So, the rms value of current is 2.12 A.