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What can you hold without touching or holding with your hands?
Memory's
What is the function of hooklets in the feathers of birds?
These maintain the shape of the feather. Without these strong linkages, the feather would not be able to withstand the air resistance during flight.
Why does a stone fall faster than a feather?
The difference is in the air resistance. Without air resistance, both will accelerate at the same rate. If there is air, in the case of the stone the ratio of surface area / weight is less than that of a feather. As a result, the stone will slow down less than the feather, and fall faster.
Which has more air resistance a feather or marble?
a feather has
What is an air hug?
A type of hug without actually touching somebody, as such a long-ranged hug.
Among the feather and the apple which has greater air resistance?
a feather
What is bypass factor in air conditioning?
Bypass factor is the percentage of air that travels through a tube and fin coil without touching any coil surface.
What forces acts against gravity?
air resistance. like dropping a sheet of paper, it flops everywhere because air is trying to keep it up and gravity is pulling it down. Or a feather, air slows it down as it falls.
What does it mean when you catch a gray feather?
It means that you have plucked a feather that is grey out of the air! It is now in your possession!
What is the friction of air?
friction in air is called air resistance. When a feather falls through the air, it is slowed down by this air resistance. as gravity pulls the feather down to the earth, air resistance pushes it up. gravity almost always wins, however, when the feather gets enough acceleration to overcome air resistance. the mass of the object effects the amount of air resistance. a feather has low mass, therefore is slowed down by air resistance. A rock has much mass, therefore air resistance doesn't effect it as much. this is why a rock appears to fall "faster" than a feather. take the rock and feather on the moon (something the Apollo astronauts did) and they fall at the same rate.
Which force makes a feather fall to the ground more slowly than a stone?
The feather falls slower because it has air restistance. The air pushes up on it. The rock falls faster because it's mass and how it doesn't have air resistance. Also, because toilet seats produce a gas, reacting with the feathers on a feather, making the feather rise.
Why is that when feather is placed on top of the book and dropped the feather drops as fast as the book?
Becauase when a feather falls all the air is pushing it up ( air resistance) like a parachute but when the book is there blocking all the air it stays there and lets gravity do the job! hope this helps!
