The chemical formula for lithium phosphide is li3p. which best describes this ionic compound?
a. lithium ions have 1 positive charge, and phosphorus ions have 3 negative charges.
b. lithium ions have 3 positive charges, and phosphorus ions have 1 negative charge.
c. lithium ions have 1 negative charge, and phosphorus ions have 3 positive charges.

d. lithium ions have 3 negative charges, and phosphorus ions have 1 positive charge.

Discuss how the hardness or softness of the landing surface is related to the time required to stop the egg

A1-lb collar is attached to a spring and slides without friction along a circular rod in a vertical plane. the spring has an undeformed length of 5 in. and a constant k =25 lb/ft. knowing that the collar is released from being held at a determine, the speed of the collar and the normal force between the collar and the rod as the collar passes through b.

Consider each of the electric- and magnetic-field orientations given next. in each case, what is the direction of propagation of the wave? a)\vec ein the +xdirection,\vec bin the +ydirection. choose+ x direction- x direction+ y direction- y direction+ z direction- z direction b)\vec ein the -y direction,\vec bin the +x choose+ x direction- x direction+ y direction- y direction+ z direction- z direction c)\vec ein the +z direction,\vec bin the -x direction. choose+ x direction- x direction+ y direction- y direction+ z direction- z direction d)\vec ein the +y direction,\vec bin the -z direction. choose+ x direction- x direction+ y direction- y direction+ z direction- z direction