Answer:
the current in the wire is 0.008333333 A
Explanation:
The computation of the current in the wire is as follows;
Current in the wire is
= Total charge ÷ cross sectional area of the wire
= 7.5 × 10^-3C ÷ 0.9s
= 0.008333333 A
Hence, the current in the wire is 0.008333333 A
We simply applied the above formula so that the correct current of the wire could come
And, the same is considerd and relevant too
Answer:
Amplitude changes by factor of 2 means double.
Explanation:
Given:
If the power delivered to the string is quadrupled.
From the formula of power transmitted by a sinusoidal wave on a stretched string is,
Where 
mass per unit length, 
angular speed, 
amplitude, 
wave speed, 
power delivered.
Here we need only two terms power and amplitude.
∝ 
All other quantities are constant for our problem,
Where 
constant
Here Power become quadruple means four times,
So amplitude changes by factor of 2 means double
Answer: a Had twice as much mass
Explanation:
The data that we have is:
"The force of gravity pulls down on your school with a total force of 400,000 newtons. "
First, remember that, by the second Newton's law that:
F = a*m
F = force
a = acceleration
m = mass
In the case of the gravitational force, the gravitational acceleration is a constant: a = 9.8m/s^2
Then, if we want to have twice as much force the only thing that we can change in the equation is the mass:
Then if the initial force is written as:
F = a*m
twice as much that force is written as:
2*F = a*x
x is a variable that represents the new mass.
We know that F = a*m
2*F = 2*a*m
2*a*m = a*x
2*m = x
Then, if we want to have twice as much force, we should have twice as much mass.
Answer
given,
radius of earth = 6370 km
earths latitude = 55° N
time = 24 hour = 86400 s
angular speed = ω
a) 
b) 
c) ω at equator
d)
