A piano tuner uses a tuner to create a tone of 5.00 x 10² Hz. When a key on the piano is struck he hears 5 beats per second. What is a possible frequency of vibration for the piano string?

2500 hz

1300 hz

605 hz

495 hz

Why poison frogs don't poison themselves? Are frogs dangerous?

4. X-ray radiation from diffraction and fluorescence instruments is a) Not very dangerous because the X-rays are absorbed in the air b) Very dangerous but poses little real hazard since instruments are designed to completely enclose all beams c)

Why does venus have higher surface temperatures than mecury even though venus is farther from the sun?

Amigo acids are important to the body because they build

Suppose a 10 mL beaker and a 100 mL beaker are both filled with water, and that the water in both beakers is the same temperature. Which statement below about the water in the two beakers is true? a.

How many types of quarks are there and what is the name of one of them

A windmill produces 1400 watts of electric power that is used to heat water. The efficiency is 100%. How long will it take to raise the temperature of 40 gallons of water by 50∘F?

What is a chemical energy

Multiple sound waves reflections in a room are called?

A shopping mall has a length of 200 m and a width of 75 m. What is the area of the mall?