Review EASE 2

How do the frequency and pitch of P compare with the frequency and pitch of Q?

A woman of mass 32 kg has 64 J of kinetic energy. What is her speed?

An echo is a sound wave which is .... by a large obstacle

True/False? "When the load is increased beyond the limit of proportionality, the diameter of the wire will increase "

True/False? "Spring will not stretch at limit of proportionality"

For the load of the spring that still obeys Hooke’s Law, if the load is made 2 times bigger, then what does the extension become?

Which energy change takes place in the microphone?

On which labelled surface should the block rest to produce the smallest pressure on the bench?

True/False? "Spring will break at limit of proportionality"

A student listens to a mchine that makes sounds of different frequencies. He can only hear one of the sound. State the frequency of sound that can be heard by a student!

The table gives four forces and the surface area on which each force acts. Which row gives the largest pressure on the surface?

A police car with its siren sounding is stationary in heavy traffic. A pedestrian notices that, although the loudness of the sound produced does not change, the pitch varies. Decribe the amplitude and the frequency of the sound!

True/False? "A metal wire is loaded up to the limit of proportionality. When the load is removed, the wire does not returns to its original length"

True/False? "Below limit of proportionality, Hooke's Law cannot be valid anymore"

Which property of the sound wave increases when the music is made louder?

True/False? "A metal wire is loaded up to the limit of proportionality. Hooke’s Law is obeyed when the load is increased from zero to this point"

How do the loudness of P compare with loudness of Q?

Which sound is the louder and which has the lower pitch?

True/False? "Hooke's Law can be used below limit of proportionality"