A. Helps them find food, is the correct answer.
Essentially, animals need to move for survival. They need them to hunt and catch prey. It also helps them to quickly escape animals and find shelter. Hope this helps :) Let me know if you have any other questions related to this problem!
Given that,
Distance, d = 10700 km
Time taken by the airplane to complete the destination, t = 12 hours
We need to find the speed of the airplane. It is equal to the total distance covered divided by total time taken. So,
We know that,
1 km = 1000 m
1 h = 3600 s
So,
So, the speed of the airplane is 891.66 km/h or 247.68 m/s.
Knowing that the momentum(p) of an object is directly (when one number goes up the other will too) related to both the mass and velocity of an object or p=mv, two rolling bowling balls of different masses can have the same momentum because the one with the lower mass, has a higher velocity. The higher velocity of an object would make up for the lower mass and vice versa.
Lamina occupies x² + y² = 14y. Outside circle is x² + y² = 49
To find the mass of lamina, integrate given density function over the region
m = ∫∫D P(x, y) dA
Subtitute x = r cosФ and y = r sinФ in x² + y² = 14y
and x² + y² = 49
x² + y² = 14y
(r cosФ)² + ( rsinФ)² = 14(rsinФ)
r² = 14r sin Ф
x² +y² = 49
r² = 49
r = 7
Cntre mass (-x. -y)
-x= i/m ∫∫D xp(x,y) dA = 1/m∫∫ (r cosФ) p( r, Ф)r
dr dФ
-y = 1/m∫∫D yp(x, y) dA = 1/m ∫∫D (r sinФ) p(r, Ф) r drФ
where m = ∫∫D p(x, y) dA
Weight = (mass) x (gravity)
From this simple formula for weight, you can see that
an object's weight is directly proportional to the acceleration
of gravity in the place where the object is located.
If the object weighs 350 N on Earth and 134 N on Mars, then
we can write
(9.8 m/s²) / 350 = (Mars gravity) / 134
Multiply each side by 134:
Mars gravity = (134/350) x (9.8 m/s²)
Mars gravity = 3.75 m/s²
(The official, accepted value is 3.71 m/s² .)