Hiro wants to model the magnetic field of a bar magnet using a shoe box and pipe cleaners. He labels the ends of the shoe box N and S.

How should he position the pipe cleaners? Check all that apply.

What causes the force that moves a boat forward when someone rows it? a. the force is caused by the rower's arms. b. the force is caused by an interaction between the oars and gravity. c.

A baboon pushes a 3.1 kg stone with 150 j of kinetic energy. What is the stone's speed?

7. How much support force does a table exert on a book that weighs 15 N when the book is placed on the table? - What if a hand pushes down on the book with a force of 20 N? - What if a rope lifts up on the book with a force of 10 N?

If rainwater is always acidic then what would it's ph be?

a solid sthere made of wood has a diameter of 18 cm and a mass of 3 kilograms. will the sphere float? why or why not? show work

Heat that is transferred by the movement of currents within a fluid is called?

5. What is the percent composition of sulfur in H2SO4? A. 32.7% B. 65.2% C. 98.1% D. 2.1%

A 0.8kg object accelerate at a rate of4 m/s2. What is the net force acting on a object

Which of the following is the best definition of an isotope? A. elements of the same kind with different numbers of neutrons B. elements of the same kind that have lost electrons C. elements of the same kind that have different electrical charges

Two cars approach each other; both cars are moving westward, one at 85 km/h, the other at 54 km/h. what is the magnitude of the velocity of the first car relative to (in the frame of reference of) the second car? answer in units of km/h.