There have been books written about how
blood type affects personality or body shape.
Knowing that blood type is determined by
antigens on erythrocytes, are these claims
scientifically valid?
O True
O False

Iwill give brainliest if you answer right : )

Asled is being held at rest on a slope that makes an angle θ with the horizontal. after the sled is released, it slidesa distance d1 down the slope and then covers the distance d2 alongthe horizontal terrain before stopping. find the coefficient ofkinetic friction μk between the sled and the ground, assumingthat it is constant throughout the trip. find the coefficient of kinetic frictionμk. express your answer in terms of someor all of the variables d1, d2, and θ.

If the pressure in a gas is doubled while its volume is held constant. true or false