A rocket moves through outer space at 11,000 m/s. At this rate, how much time would be required to travel the distance from Eart
1 answer:
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Answer:
Explanation:
let this sign be ∅ (titha in degrees)
let coefficient of friction of 0.200 be u
and i be current i= 1.41A
mass m=1.14g/cm m=0.0114g/m
To find the magnetic field from the north will be:
tan ∅= u
∅=
∅=11.3°
The direction:
i L*B cos(∅)= umg
divide both by iLcos(∅) to find B
B= where m=
B=
B=
Answer:
a)
The velocity increase by a factor of
b)
The velocity decrease by a factor of 2.
c)
The velocity increase by a factor of 2
d)
The velocity not changes.
Explanation:
For this case we know that the velocity is
represent the final velocity after the changes specified,
Part a
The formula for the speed of a wave in a string is given by:
And the linear density is defined as:
And if we replace this we got:
If the tension mass is doubled we have this:
The velocity increase by a factor of
Part b
If we mass is quadrupled we have this:
The velocity decrease by a factor of 2.
Part c
If the length is quadrupled we have this:
The velocity increase by a factor of 2
Part d
For this case we know that the mass and the length are both quadrupled and we got:
The velocity not changes.