6. Suzie hammers on a block of wood when she is 85 meters from a large brick wall. Each time she

she hits the block, she hears an echo 0.50 s later. With this information, show that the speed of

sound is 340 m/s.

On which four factors does the quantity of heat lost or gained by body depend?

In waves, refraction occurs when A) waves meet a solid object. B) a new surface is introduced. C) there is a change in the depth of the water. D) the temperature of the water changes unexpectedly.

What do all wetlands have in common?

A sample of iron receives 50. J of heat energy that raises the temperature of the iron 25.0°C. If iron has a specific heat of 100 J/kg°C, what is the mass of the iron sample?

During a hard sneeze, your eyes might shut for 0.50 s. If you are driving a car at 90 km/h during such a sneeze, how far does the car move during that time?

All objects are attracted to each other by the force of

Samantha wants to study circus performance when she gets to college. She has mastered many physical skills already, but she keeps falling short on her jumps.

Is this Conduction, Convection, or Radiation: The top floor of a building is the warmest.

The law that states the volume of gas is directly proportional to its temperature in kelvins if the pressure and the number of particles is constant is * a. Boyle's Law b. Gay-Lussac's Law c. Einstein's law. d. Charles's law.

Which of the following corn pests causes galls to develop on the plant? blight mildew rust smut