Sam is walking through the park. He hears a police car coming down the street toward him. What happens to the sound of the siren as the police car approaches and then passes Sam?

Which of the following is the number 0.02204 written in scientific notation? O A. 2.240 x 10-3 O B. 2.204 x 10-1 O c. 2.204 x 102 OD. 2.204 x 102

Why are experiments often performed in laboratories? a. There are more variables in a laboratory setting. b. You can control variables more easily. c. They are better at representing the real world. d.

A coil of wire that is carrying a current and produces a magnetic field is a. a galvanometer. b. a solenoid. c. a magnetic domain. d. an electric motor.

The second law of thermodynamics states that thermal energy can flow from colder objects to hotter objects ... a. by convectionb. only if work is done on the systemc. spontaneously d. when thermal expansion takes place

Becky and Michael went to the grocery store to buy ingredients for trail mix. They filled one bag with almonds and weighed it three times on the store's scale. The results are shown below. trial weight (lbs.) 1 3.29 2 3.71 3 2.

Which type of radiation has the lowest penetrating ability?

For which one of the following situations will the path length equal the magnitude of the displacement? a A ball on the end of a string is moving in a vertical circle. b A toy train is traveling around a circular track.

A poem on the body system

How many stars, approximately, are in the solar system?

The ends of a magnet where the force is strongest are magnetic