Answer:
Explanation:
The magnetic force between two current-carrying wires is given by:
where
is the vacuum permeability
I1 and I2 are the two currents
r is the distance between the wires
Here we have:
Substituting into the equation,
Ikr!! I asked 1 question 3x and wasted my points to get some link?!
Answer:
The value is
Explanation:
From the question we are told that
The rate at which the plate rotates is
Generally the revolution per second is mathematically represented as
=>
Let x be the speed of the slower car and that x + 20 be the speed of the faster car. The time it takes for the object to travel a certain distance is the quotient when distance is divided by the speed.
t = d / S
Substituting the given and equating their times,
t = 225 / (x + 20) = 165 / x
The value of x is equal to 55. Therefore, the value of t is equal to 3 hours.
Answer:
a.
b.
Explanation:
Given:
Mass of the baseball =
The initial velocity of the baseball = 20m/s
The force acting on the baseball is only due to gravity and the air resistance is negligible. The baseball acceleration is constant due to gravity.
According to Newton's second law:
----------(1)
where mass of the baseball
Put all the value in equation 1.
Therefore, the force on the ball when it reaches half of its maximum height is .
Similarly, the force acting on the ball when its peak .