We won't have a clue until we see Question #5.
<h3><u>Answer;</u></h3>
<em>Only some metals are attracted by magnets; these metals are called ferromagnetic.</em>
<h3><u>Explanation;</u></h3>
- <u><em>Magnets</em></u> are those materials that have the ability of producing magnetic field. Magnets attracts materials called magnetic materials and have no effect on non magnetic materials such as wood.
- <em><u>Magnetic materials </u></em>are materials that are attracted by a magnet, these includes some metal such as iron and steel. However some metals are non-magnetic materials, these include, gold, silver, and copper among others,
- Therefore, it would be appropriate to say that<em> </em><em><u>only some metals are attracted by magnets; these metals are called ferromagnetic.</u></em>
Answer:The answer is A
Explanation:
To determine the force, we use the equation
Fg= G m1 m2/r2
, where Fg is the force of gravity, G is the gravitational constant,
m1
is the mass of the first body,
m2
is the mass of the second body, and r is the radius. Hence, we have
Fg=6.67×10−11 N×m2/kg2×2.5 kg×2.5 kg/(0.50 m)2=1.7×10−9N
. Since this is a gravitational problem, the force on one body has the same force as the other body, but the directions are opposite.
We need to calculate speed , so we don't need to consider direction.
speed =distance/time
=(80+60)/2
=70.
But if we were to calculate velocity,we would need to consider the direction.
The direction of resultant displacement would be in north east direction with displacement
=√60^2 +80^2
=100km
The average velocity=100/2=50kmph
Answer:
To prevent from getting injured.
