I would say clay, because its a solid
It is basically shielding a magnetic field. This can be done with rubber or any other material that is thick. Normally small magnets already block the shield.
Answer: 2.70 cm
Given:
Density, 
Mass, m=184 g
Formula Used:
Volume, V = density/mass
where a is the side of the cube
hence, the length of one side of silver cube is 2.70 cm
The altitude of the pole vaulter as she crosses the bar is 5 m.
<h3>The altitude of the bar</h3>
v² = u² - 2gh
where;
- v is final velocity of the pole vaulter
- u is the initial velocity of the pole vaulter
- h is altitude of the bar
h = (u² - v²)/2g
h = (10² - 1.5²)/(2 x 9.8)
h = 5 m
Thus, the altitude of the pole vaulter as she crosses the bar is 5 m.
Learn more altitude here: brainly.com/question/1159693
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I think there caused by the gravitational pull on the earth from the moon
