A loudspeaker changes _________ energy into sound energy.

Related Mcqs:

The chemical name of Laughing gas is___________?

A. Nitric oxide B. Nitrogen dioxide C. Nitrogen pentoxide D. Nitrous oxide...

A pulsar is a rapidly spinning neutron star which emits:

A. A blinding light when it aligns with the planets B. Radio waves detectable from Earth C. A gravitational pull which attracts high energy dust particles D. Enough energy to power itself indefinitely...

Telephone was invented by__________?

A. Vint Cerf B. Charles Babbage C. Edison D. Alexander Graham Bell...

Yeast is used in making bread because it produces?

A: Oxygen B: Carbon Dioxide C: Nitrogen D: None of above...

Cancer can be treated by ?

A: Antibiotics & vaccines B: Radiotherapy & antibiotics C: Chemotherapy & radiotherapy  D: Antibiotics & Chemotherapy...