Which of the following is an example of a physical change?

A. water freezing

B. a cake baking

C. a match burning

D. fireworks exploding

Name 2 forces acting on an object at rest Only need 1 got gravity

Two advantages of using MCB in a house

Which of the following is a source of direct electric current? A. transformer B. Coulomb C. switch D. battery

When the blood flows through the capillary bed, most of the plasma will return to the heart through the venules. What happens to the plasma that does not travel to the venules? It is removed by the lymphatic vessels. It is lost as heat.

When a wave source moves toward a receiver, does the receiver encounter an increase in wave frequency, wave speed, or both?

What is the acceleration of all objects due to gravity? What does this mean?

Which is the correct formula for cellular respiration? a. 6 CO2 + 6 H2O + light energy → C6H12O6 + 6 O2 b. CO2 + H2O → C6H12O6 + O2 c. C6H12O6 + O2 → CO2 + H2O d. C6H12O6 + 6 O2 → 6 CO2 + 6 H2O + ATP energy

A tree is standing in the middle of a meadow. As you watch, the wind begins to blow and the tree bends. Which statement best explains how you could tell that a net force was acting on the tree? OA) The tree had momentum.

Consider two cars, a 700kg Porsche and a 600kg Honda Civic. The Porsche is speeding along at 40 m/s (mph) and the Civic is going half the speed at 20 m/s.

Which statement about an electron in the 4d state is correct? A. The magnitude of its orbital angular momentum is 6√ℏ. B. The largest orbital angular momentum it could have in any given direction is 4ℏ. C.