Answer:
The magnetic field is strongest at the center and weakest between the two poles just outside the bar magnet. The magnetic field lines are densest at the center and least dense between the two poles just outside the bar magnet.
Explanation:
The correct answer is option ( A) the ratio of their average speeds (bird 1/bird 2) is 1.0
velocity = distance / Time
Let us assume distance covered by Bird 1 = d
case 1 (Bird 1) :-
time = 6 hours
velocity(Bird1) = d/6 = 0.167*d
case 2 (Bird 2) :-
time = 12 hours
distance is twice of Bird 1 = 2d
velocity(Bird2) = 2d/12 = 0.167*d
now, velocity of Bird1/Bird2 = (0.167*d)/(0.167*d) = 1.0
So,velocity of (Bird1/Bird2) is 1.0 .
Average velocity / Average speed = Total displacement / Total distance. Remember that the numerator is less than or equal to the denominator. As a result, the ratio is always equal to or less than one. Distance traveled divided by time taken is the most commonly used formula for calculating average speed. The other formula is to add the initial and final speeds together and divide by two.
Learn more about average speeds here :-
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Answer:
His walks cover 2km+2km+2km = 6 km.
Explanation:
Let East be positive. Since West is the opposite direction, it is negative. His displacement is dependent on direction. 2km east + 2km west + 2km east = (2-2+2)km = 2km. His displacement is 0 because he ends up back where he started.
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Answer:
86.43
25.72
Explanation:
Location of center of mass from 59 Kg
Location of center of mass from 73 Kg
Momentum of inertia
Angular moment
(b)
When separation is 0.6 m
Location of centre of mass from 59 Kg
Location of centre of mass from 73 Kg
Momentum of intertia
Angular moment
Think of the small squares as one, and the long squares as ten. For the first grid instead of counting the small squares count the empty ones. there are 12 empty ones and we know that there are 100 in total, so you take the total (100) minus the empty (12). which equals 88/ 100. it's over 100 because that's the total. then the second grid 4 for out of the ten, so 4/10. to add these together you have to find the greatest common denominator. Which is 100. so 10 *what=100, to figure this out do 100 divided by 10, which is ten. then multiply 4/10 by 10. 50/100. so then you add 88/100+50/100. which is 138. remove any 100, because that's a whole and make them ones. so you take 138/100. subtract 100 from the top and make a one. so it ends up being 1 and 38/100. does that make sense?