Two friends whisper at a volume of 20 decibels. Later, they converse at a volume of 40 decibels.

How much greater is the energy intensity of the conversation compared to the whisper?

A. 20 times

B. 10 times

C. 1,000 times

D. 100 times

When a solid A of mass 12g is completed immensedin a measuring cylinder filled with water it diplaces the same volume of water as does solidB if mass 8 what can be deduced about the densities of solid AandB

If the wavelength of one wave is 0.25 meters, how many waves will be formed on a rope that is one meter long?

What material would make the best light bulb filament? A. A conductor surrounded by an insulator. B. A resistor, which converts some electric energy to light and thermal energy. C. An insulator, which stops the flow of electricity. D.

Which of the following is not a negative consequence of upward urban growth? A) pollution B) creation of a "heat island" C) land for growth becomes scarce D) waste management issues E) increased use of surrounding land

A dog chases a car, running 825 m west in 6.22 s. What is the average velocity of the dog?

A girl on a backyard trampoline bounces straight upward with an initial velocity with 4.5 m/s what is the girls velocity when she returns to the trampoline

If you travel for three hours at a speed of 30 km/h, how far will you go?

What can happen when the earths plates slide past each other?

If zak's speed is 3.00 m/s when he starts to slide, what distance d will he slide before stopping? express your answer in meters.

What atmospheric constituent is responsible for the blue color of uranus and neptune? a. Hydrogen b. Water c. Ammonia d. Methane