The scientists makes an educated guess in " if, then" form. Which step of the scientific method is described?

2. Two children play a game of catch, running back and forth to catch each throw from the other. Assume the children are standing 5m apart with one child standing at the origin before the game begins.

Which describes the molecular motion of a solid nickel marble rolled across the floor? A. the constant vibration of the nickel atoms that make up the marble B. the motion of the nickel atoms due to contact with the floor C.

A 10 N force pulls to the right and friction opposes 2 N. If the object is 20 kg, find the acceleration.

4. Three people are pushing a 500 kg of box in the same direction. Applied forces are 30 N, 20 N, and 10 N respectively. If the acceleration of the box is 0.02 m/s2, what is the magnitude of a force created by friction?

Suppose the wavelength of the light is 450 nm. how much farther is it from the dot on the screen in the center of fringe e to the left slit than it is from the dot to the right slit?

You recently won a bicycle race that was 100 km in distance. The race took you two hours to complete. What was your average speed?

A hydrogen atom has one proton, two neutrons, and no electrons. Is this atom neutrally charged? Explain your answer.

A sheet of paper can be withdrawn from under a container of milk without toppling it if the paper is pulled A. gravity pulls very hard on the milk carton. B. the milk carton has very little weight. C. the milk carton has inertia. D.

What is concave mirror

Two boxes are suspended from a rope over a pulley. each box has weight 50 n. what is the tension in the rope