Answer:
3.89*10^3
Explanation:
The Scientific notation of the question 0.00389 is 3.89*10^3 ( which is 3 point Eighty Nine Multiply ( Multiply sign " * " ) Ten with raising power (this sign is used normally to write power ^ ) Three).
Magnetic lines of forces make a closed loop because there are no magnetic charges (monopoles). While electric <span>field lines end on electric charges, magnetic field lines have no objects on which they could end. This is why they must form loops. </span>
Answer:
The correct answer is Option A (decrease).
Explanation:
- According to Heisenberg's presumption of unpredictability, it's impossible to ascertain a quantum state viewpoint as well as momentum throughout tandem.
- Also, unless we have accurate estimations throughout the situation, we will have a decreased consistency throughout the velocity as well as vice versa though too.
Other given choices are not connected to the given query. Thus the above is the right answer.
Answer:
Fav = -12209 N
Explanation:
let p1 be the initial momentum of the ball and p2 be the final momentum of the ball. let v1 be the initial velocity of the ball and v2 be the final velocity of the ball.
From Newton's second law of motion, we get that the avarage force acting on the ball is given by:
Fav = Δp/t
= (p2 - p1)/t
= m(v2 - v1)/t
= [(145×10^-3)(-45.3 - 38.9)/(1×10^-3)
= - 12209 N
Therefore, the average force applies on the ball by tha bat is 12209 in the direction opposite to the balls initial direction.
