Photograph 7.18 Uses of magnets and electromagnets in daily life direction of the poles.
sup
Formative Practice
7.3
P
Dry cell
elechi Copper
wire
1. What is a magnetic field?
Iron
2. Figure 1 shows an iron nail coiled with insulated copper wire nail
connected to a dry cell of 1.5 V.
(a) What happens when the switch is turned on the
(b) Mark the direction of the current flow in the copper wire
around the iron nail.
antidekure NS
(c) State the poles of the magnetic field at P and Q.
(d) What happens to the strength of the magnetic field if another
dry cell of 1.5 V is added?

we're given that v₀ = 0 and a = 5.4 m/s². therefore, since v = at + v₀ for constant acceleration the equation for velocity is

after 28s,

m/s

which i would round to 150 m/s as my final answer

answer: the metamorphic rocks are formed when they are exposed to high pressure and high temperatures. this happens when one of the earth's plates comes in contact with the other plate by traveling in opposite directions, straight into each other or slipping under one another. the friction that is caused by this activity results in   melting of rocks and when it cools they are known as metamorphic rocks. this process needs a controlled amount of pressure and temperature otherwise it may turn into magma.

not too sure thinking all accelerations are pointed down