THE DOPPLER EFFECT
1. TRUE or FALSE:
Ken Fused is standing on a corner when a police car passes by with its siren on. Ken hears a
different pitch when the police car is approaching him than when it is past him. This is
because the siren on the front of the car is set to a higher pitch than the siren on the back of
the car.
2. Describe the real reason Ken Fused observes what he does.
3. TRUE or FALSE:
The Doppler shift is a phenomenon that is observed only of sound waves.
Explain your
4. TRUE or FALSE:
As the source of a sound approaches an observer, the loudness of the sound increases. This
is an example of the Doppler Shift.
Explain your

Explanation:

1 ) False . The reason given in the problem is wrong .

2 ) When a source of sound approaches an observer , the frequency of the sound appears of having higher frequency . When it goes away from the observer , its sound  appears of having lower frequency . This is due to the phenomenon of  Doppler's effect .

3 ) The statement is false.

Doppler shift is a phenomenon which is found in light also . The frequency of light from distant stars coming towards the earth appears to have blue sift signalling increasing frequency . It is similar to doppler shift in sound.

4 ) The statement is true . When the source of sound approaches an observer , its intensity appears to increase due to apparent increase in the frequency due to Doppler's shift.

an obstruction

gpe = mass x gravity constant x height or… gpe = mgh

where… mass: measured in kilograms (kg)

gravity: gravity constant on earth = 10.00 m/s2

height: measured in meters (m)

gpe: measured in joules (j) or kilojoules (kj)

how do you solve gpe?

gravitational potential energy (gpe) is the energy an object has because of its position above the. ground.

gpe = mass x gravity constant x height or… gpe = mgh.

mass:

note: to earn full marks when solving science word problems, you must show your work:

formula.

example:

given values:

mass = 0.3 kg.