A radio transfers 270 J of energy electrically, 94.5 J is transferred by sound. Work out the efficiency of this radio. Give your answer as a decimal.

What will happen if you take a cold soda out of the fridge on a hot day, condensation or evaporation?

When you speak or sing, you force air through your?

Crocodiles produce offspring through sexual reproduction. Which statement is true about young crocodiles? Question 9 options: They are identical to the male parent. They have characteristics of both parents.

Fossils cannot be used to explain changes in the earth. True or false

Which of the following is not a result or consequence of rising average air temperatures on Earth? Glaciers and ice sheets melt. Sea levels rise. Evaporation increases. Salinity increases.

A. Which skill related fitness component is your strongest and weakest?

A 100 N box is placed on an inclined plane that makes a 30° angle with the horizontal. Calculate the component of gravitational force that acts down the inclined plane. A. 25 N B. 50 N C. 87 N D. 100 N

Approximately how many kelvins are equal to 60 c? a. 289k b. 323k c. 333k d. 413k

What are two ways to change velocity?

What is the main optical element of a refracting telescope?