Two children are being pulled on a sled (40.0 kg total mass) by a rope that supplies a 150 N horizontal force and a 100 N upward force. If the sled moves
across the ground at a constant velocity, calculate the coefficient of friction for the
surfaces involved.

Two polarizers are oriented at 70∘∘ to one another. unpolarized light falls on them. what fraction of the light intensity is transmitted?

When does your body conduct current more readily?

Marcella is a four-year-old girl who is a victim of emotional child abuse. based on the child and family services improvement and innovation act of 2011, which action should the government take for marcella? a. the state should arrest marcella’s abuser. b. the state should find a home for marcella as soon as possible. c. the state should enforce stricter laws in the area where marcella resides. d. the state should provide medical assistance to marcella.