Liquid water and ice are the same substance, H2O. How would you explain why ice floats in water?

Suppose that two objects attract each other with a gravitational force of 16 units. if the mass of object one was doubled, and if the distance between the objects was tripled, then what would be the new force of attraction?

What type of electromagnetic wave can be used to transmit information? (A) radio wave only (B) microwave only (C) neither a radio wave nor a microwave (D) both a radio wave and a microwave

Which object has the most kinetic energy? a bus a car a plane a bicycle

A battery consists of five dry cells connected in series. If the voltage developed by each cell is 1.5 V, the total voltage developed by the battery is a. 7.5 V. b. 1.5 V. c. 5.0 V. d. 0.3 V. the total voltage developed by the battery is a. 7.5

Physics is the study of matter and energy and their relationships. True False

11) Shifting with ease from one type of problem-solving strategy to another is called a) flexibility b) versatility c) originality d) openmindedness

A truck undergoes a constant acceleration of 2.0 meters/second2 on a highway that slopes upward at an angle of 30.0° to the horizontal. What is the magnitude of the horizontal component of the acceleration?

Why is there so much more carbon dioxide in the atmosphere of Venus than in that of Earth? Why so much more carbon dioxide than on Mars?

People have proposed driving motors with the earth's magnetic field. This is possible in principle, but the small field means that unrealistically large currents are needed to produce noticeable torques.

A hot air ballon with a mass of 500kg ascends at a constant rate of 1.5 m/s for 20s. how much work is done by the upward force?