5. Soccer Practice. You are dragging a bag of soccer balls across a practice field with a constant velocity of 1.5 m/s. If the mass of the bag (and balls) is 4 kg, and your force on the bag is 28 N,
determine the force of friction on the bag.

Yvette hangs a 2.4kg bird feeder in the middle of a rope tied between two trees. the feeder creates a tension of 480 n in each side of the the rope.

If angle "a" is 25°, angle "b" is: a) equal to angle c b) less than angle c c) greater than angle c

Wave functions describe orbitals in a hydrogen atom. each function is characterized by 3 quantum numbers: n, l, and ml. if the value of n = 2: the quantum number l can have values from to . the total number of orbitals possible at the n = 2 energy level is .