Charles Gas Law problem: the temperature inside my refrigerator is about 4 degrees Celsius. If I place a balloon in my fridge th
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Answer:
the speed at which Noelle walks from point B to A, v=7.5 kilometers per hour
Explanation:
In this question we have given
average speed for the entire trip,S = 6 kilometers per hour
Speed of Noelle while walks from point A to B= 5 kilometers per hour
Therefore, time taken by Noelle to walks from point A to B,
Let us consider distance between A and B is d.
Therefore total distance covered in moving from point A to B and then moving back from point B to A, =
Let v be the speed at which Noelle walks from point B to A
Therefore time taken by Noelle to walks from point B to A,
we know that average speed S is given as
................(1)
here, x (=2d) is total distance
and t (= ) is total time
put values of S, x and t in equation 1
on solving we get,
v = 7.5 kilometers per hour
Therefore, the speed at which Noelle walks from point B to A, v=7.5 kilometers per hour
Answer:
Explanation:
Given data;
Two hanging mass is given as m1 and m2
Mass of pulley is given as m3
radius of pulley is r
Assuming mass m1 is greater than m2
Take downward direction for mass m1
and upward direction for mass m2
and clockwise direction of pulley is positive
from newton second law on each mass
for Mass m1
for Mass m2
fro pulley