<h3><u>Answer;</u></h3>
<em>4. Only some metals are attracted by magnets; these metals are called ferromagnetic.</em>
<h3><u>Explanation;</u></h3>
- <u><em>Magnets are those materials that have the ability of producing magnetic field.</em></u> Magnets attracts materials called magnetic materials and have no effect on non magnetic materials such as wood.
- <em><u>Magnetic materials are materials that are attracted by a magnet, these includes some metal such as iron and steel.</u></em> However some metals are non-magnetic materials, these include, gold, silver, and copper among others,
- Therefore,<em><u> it would be appropriate to say that only some metals are attracted by magnets; these metals are called ferromagnetic.</u></em>
Answer:
Lifeless because of the lack of rain
Answer:
c. 400 kg.m/s
Explanation:
Given
mass of person, m = 80 kg
moving speed of person, v = 5 m/s
To find momentum of the person.
We know that momentum(p) of an object is given by formula:
p = mv
= 80 kg x 5 m/s
= 400 kg m/s
During severe hemorrhage or blood loss in a rapid manner, in response the brain will send out signals to the heart to beat faster also the supply will have more concentration on the cognitive area of the body, this is why the feeling of weakness is felt. In order to sustain, there is also decrease in the space between the openings of the veins as the supply of blood and blood pressure decreases.
Most reactions are exothemic. If the forward reaction of an equilibrium reaction is exothemic then the reverse reaction must be endothermic.
If a system in equilibrium is heated, it will move in exothermic direction to give out heat energy.