Ch 3. A pulley system has
U this system roses
when ท
effort 150
Calculate
a
relocity ratio of
load weighing 400 N
15 applied
а и
4
The
ex
the load
efficiency as the system.
6, the work done by the effort to raise
by a vertical height of 4m.
G. For the
height in (6) moved by the load,
what
the distance
did the effort have
to move
ter
Solution
For the height in (b) moved by the load what distance did the effort have to move

v 154.9= 0.9 length length s little over 154.9cm

adding a(n) to an electric circuit would increase the magnetic field around a wire;

b. solenoid

a solenoid is a type of electromagnet whose purpose is to generate a controlled magnetic field.

if the purpose of the solenoid is instead to impede changes in the electric current, a solenoid can be more specifically classified as an inductor rather than an electromagnet.

blue light is scattered in different directions by the tiny molecules of air. blue is scattered more than other colours because it has a shorter distance to travel which results in smaller waves. this is why we see a blue sky most of the time.