Answer:
OT
It is important to wear protective equipments during games and practices.
Explanation:
Practice is a review of what is about to happen in some time to come and with practice ,the future can be trusted.
During practice it is very important to use protective gears or equipments because without them, injuries and accidents are liable to occur.
During the major game it is also important to prevent accidents or big injuries as the equipments protect each vital part of the body.
2
Explanation:
Let us assume the mass of ship 2 = K
Mass of ship 1 = 4K
Condition:
Both ships have the same mass
The kinetic energy of a body is the energy due to the motion of it.
It is expressed as:
K.E =
m is the mass of the ship
v is the velocity;
Since both ships have equal velocity;
K.E of ship 1 = K.E of ship 2
\frac{1}{2} m v^{2} of ship 1 = \frac{1}{2} m v^{2} of ship 2
multiply through by 2;
4k x = k x
dividing by k;
4 v_{1} ^{2} = v_{2}^{2}
taking square root of both sides
V₂ = 2V₁
learn more:
Kinetic energy brainly.com/question/6536722
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Answer: <u><em>C. Steel</em></u>
Explanation: <em><u>When a sound wave travels through a solid body consisting</u></em>
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<em><u>of an elastic material, the velocity of the wave is relatively</u></em>
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<em><u>high. For instance, the velocity of a sound wave traveling</u></em>
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<em><u>through steel (which is almost perfectly elastic) is about</u></em>
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<em><u>5,060 meters per second. On the other hand, the velocity</u></em>
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<em><u>of a sound wave traveling through an inelastic solid is</u></em>
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<em><u>relatively low. So, for example, the velocity of a sound wave</u></em>
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<em><u>traveling through lead (which is inelastic) is approximately</u></em>
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<em><u>1,402 meters per second.</u></em>
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The period of one full swing depends on the length of the pendulum and on gravity. The period of each full swing would be longer on the moon, with less gravity.
The rotation of the plane of the swings doesn't depend on the length of the string OR on gravity. It only depends on the latitude of the place where the pendulum hangs, and the rotation period of the body it's located on.
On Earth, it's (24 hours)/(sine of latitude).
On the moon, it would be (27.32 days)/(sine of latitude).
Answer:A
Explanation:
A positively charged glass rod attracts object x. So, object x must be negatively charged or uncharged.
This occurs because opposite charges attract each other or either object x is uncharged and a negative charge is induced in it as glass rod approach the object x.
So option A is correct