You can increase the moment of inertia of a beam without increasing its cross sectional area by <span>making the beam more solid by using more material or material with a higher density. Also, you could deflate the air out of it so it has less tendency to rise with hot air currents.</span>
La respuesta es la letra b
Answer:
Option b
Explanation:
An object is said to fall freely when there is no force acting on the object other than the gravitational force. Thus the acceleration of the object is solely due to gravity and no other acceleration acts on the body.
Also the initial velocity of the body in free fall is zero and hence less than the final velocity.
As the body falls down closer to earth, it experiences more gravitational pull and the velocity increases as it falls down and the moment it touches the ground the period of free fall ends at that instant.
Thus the final velocity of an object in free fall is not zero because the final velocity is the velocity before coming in contact with the ground.
(2)<span>less than 750 N.( if the downward acceleration of elevator were g,then answer would be 0 N.)</span>
Answer:
total distance moved by the swan is
d = 864000 m
Fraction of total mass lost by it
Explanation:
As we know that swan cruises at 20 m/s speed
Part a)
Distance moved by the swan is product of speed and time
so we have
Part b)
As we know that power consumed by the swan is 200 W
so total energy consumed in 12 hours is given as
Since we know that output power is 25% of total energy used so total energy consumed is given as
now we know that 1 g of fat is lost for 37 kJ energy
so total mass lost in this
so fraction of mass lost is given as