The smoother the surface of a ramp, the greater is the danger of a vehicle slipping and losing traction.
A wet, smooth ramp could cause a pedestrian to slip over and be hurt.
It would be increased because the loss due to friction would be reduced.
Dirt , assuming it is flat and dry . The answer depends upon the velocity of the ball and what resistance there is in either the dirt or grass .
No, an efficiency greater than one would not be possible, since that would violate a very fundamental law of physics: conservation of energy. The efficiency of an "ideal machine" would be one, in many cases; the efficiency of an ideal Carnot engine would be less than one.
Concave mirror would have the surface curved out get coated with mercury hence curved in surface would reflect the rays fallen on. But convex mirror would have the surface curved in get coated with mercury hence curved out surface would reflect the rays fallen on. Concave mirror would have both converging and diverging ability. When light coming from an object placed at a distance higher than its focal length right from the pole of the mirror, converging takes place. But the object lies in between pole and the focus diverging action. But in convex mirror irrespective of the placement of the object only diverging phenomenon. Concave mirror used as shaving mirror and dentists too use them Convex mirror is used as rear view mirror in case of vehicles near by the driver.
When consider the micro scale. Pusing a mass need force and air has mass. Object travel through air would push and drag air along with it and so the conservation of momentum would made the object slow down because it speed air up. The object shape also affect the amount of air push, more surface contact with air is more friction and smoother the surface would less dragging air along with it and is lesser friction.
The answer is : Increase because friction would decrease.
It would be increased because the loss due to friction would be reduced.
The smoother the surface of a ramp, the greater is the danger of a vehicle slipping and losing traction.A wet, smooth ramp could cause a pedestrian to slip over and be hurt.
The smoother the surface of a ramp, the greater is the danger of a vehicle slipping and losing traction.A wet, smooth ramp could cause a pedestrian to slip over and be hurt.
Friction
It would be smoother and there would be less lost, as pollution such as smog eats into the limestone.
large surface areas of the cell surface membrane
Nothing much in reality. Its surface would be smoother (weathering) and it would be a more desirable target for our space voyaging; but those are superficial things.
Make surface as smooth as possible so you would have less sliding friction
Sgraffito is a scratching technique for the surface of a double coated piece of artwork. The Romans would have used the technique the same as we use it today that is, to show a different undercolor in either a painting of a piece of pottery.Sgraffito is a scratching technique for the surface of a double coated piece of artwork. The Romans would have used the technique the same as we use it today that is, to show a different undercolor in either a painting of a piece of pottery.Sgraffito is a scratching technique for the surface of a double coated piece of artwork. The Romans would have used the technique the same as we use it today that is, to show a different undercolor in either a painting of a piece of pottery.Sgraffito is a scratching technique for the surface of a double coated piece of artwork. The Romans would have used the technique the same as we use it today that is, to show a different undercolor in either a painting of a piece of pottery.Sgraffito is a scratching technique for the surface of a double coated piece of artwork. The Romans would have used the technique the same as we use it today that is, to show a different undercolor in either a painting of a piece of pottery.Sgraffito is a scratching technique for the surface of a double coated piece of artwork. The Romans would have used the technique the same as we use it today that is, to show a different undercolor in either a painting of a piece of pottery.Sgraffito is a scratching technique for the surface of a double coated piece of artwork. The Romans would have used the technique the same as we use it today that is, to show a different undercolor in either a painting of a piece of pottery.Sgraffito is a scratching technique for the surface of a double coated piece of artwork. The Romans would have used the technique the same as we use it today that is, to show a different undercolor in either a painting of a piece of pottery.Sgraffito is a scratching technique for the surface of a double coated piece of artwork. The Romans would have used the technique the same as we use it today that is, to show a different undercolor in either a painting of a piece of pottery.
A bulldozer.
It depends where the rock was formed. If it was formed inside the earth, it would be rough. If it was formed on the surface, it would be smoother than the rock formed inside the earth.