Hamid is viewing an image of a bird produced by a set of concave lenses. What must be true about the image? It is a virtual image.
It is upside down.
It is larger than the actual bird,
It is capable of being projected.

i think they are all correct

explanation:

they seem good

a displacement distance is size of displ

graph slopes whilst gas cools, then it is flat whilst conensation to liquid happens, the coolong liquid then graphs as a slope when it solidifies graph is flat

latent heat

the motion of a pendulum is a classic example of mechanical energy conservation. a pendulum consists of a mass (known as a bob ) attached by a string to a pivot point. as the pendulum moves it sweeps out a circular arc, moving back and forth in a periodic fashion.