You are watching Canada day fireworks from a distance. You observe the light, and then hear the sound 3.50 seconds later. How far are you from the location of the firework, if the termometer outside of your home shows a temperature of 5.00 degrees celcius?

d

explanation:

v=uf/(u-f)

= 5.10/(5-10) convex lens has positive focal length

=50/-5

=-10 cm (formed at other side)

the simple machine has three main features. they are:

fulcrum is the center point or pivot point of the machine. effort is input force/ applied force. load is external force/ output.

the keisha 's machine labels are

x : load

y: fulcrum

z: lever