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Fantom [35]
4 years ago
9

Wright true or false:

Physics
1 answer:
andrey2020 [161]4 years ago
6 0
True false false true
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A 91.5 kg football player running east at 2.73 m/s tackles a 63.5 kg player running east at 3.09 m/s. what is their velocity aft
pentagon [3]

Answer:

2.877 m/s

Explanation:

According to the laws of conservation of linear momentum,

the momentum of the moving objects before impact is equal to the momentum of the objects after impact (Assuming no external forces were applied)

Let both players are tackled and moving in V velocity

  • M and m - masses of the players
  • U and  u -  velocities of them respectively (both velocities are towards east direction )

momentum before impact = momentum after impact

                          →MU + →mu  = →(M+ m )v

 91.5  * 2.73 + 63.5 * 3.09 =  (91.5 + 63.5) * V

                                       →V = 2.877 m/s (To East)

3 0
3 years ago
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A characteristic controlled by one or more genes is called a what
Rama09 [41]
I believe the answer would be polygenic. The word translates to "multiple genes". This occurs when many genes make up one specific thing such as our hair color or eye color.
4 0
4 years ago
Materials with resistivities between those of good conductors and those of insulators are called:
bogdanovich [222]

semiconductors ... silicon, germanium etc ...

8 0
3 years ago
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Which statements describe the energy in a food web? Check all that apply. When an organism eats another organism, it loses energ
Neko [114]

Answer:  Producers have the greatest amount of available energy.

When an organism eats another organism, it gains energy.

Explanation:

A food chain is a linear sequence of transfer of food and energy when one organism is eaten by the other organism. A food web is the interconnection of two or more food chains. This happens when one organism belong to one food chain also consume organisms of same food chain or other food chain. A food chain includes trophic levels on the basis of the mode of feeding of the living beings.

Among the options given, Producers have the greatest amount of available energy. and

When an organism eats another organism, it gains energy. are correct.

Producers are the organism which are capable of producing their food either through photosynthesis or chemosynthesis. They are present at the base level of the food chain. They consist of large amount of energy as compared to all the trophic levels in the food chain.

When one organism eats other organism it gains energy because of the assimilation and digestion of the organism as food.

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3 years ago
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How long do curling irons take to heat up?
adoni [48]
4-5 mins at max. Depends on the brand
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