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11111nata11111 [884]
3 years ago
15

PLEASE I NEED HELP I AM REALLY STUCK!!!

Physics
1 answer:
AlekseyPX3 years ago
8 0

Answer: Force = Mass X Acceleration

F = 5 x 2

F = 10 N

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5. Which organisms are used to manufacture human insulin?
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The answer is going to be C, Bacteria. Therefore the organisms that are used to manufacture human insulin would be bacteria.
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3 years ago
12. The bond formed when two atoms share a pair of electrons is called a
givi [52]

Answer:A covalent bond, also called a molecular bond, is a chemical bond that involves the sharing of electron pairs between atoms. These electron pairs are known as shared pairs or bonding pairs, and the stable balance of attractive and repulsive forces between atoms, when they share electrons, is known as covalent bonding.

Explanation:

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3 years ago
A 5000-kg freight car runs into a 10,000-kg freight car at rest. They couple upon collision and move with a speed of 2 m/s. What
Vitek1552 [10]

Answer:

C) 6 m/s

Explanation:

Given that

m₁=5000 kg

The initial velocity of 5000 kg car =u₁

m₂=10,000 kg

The initial velocity of 10000 kg car =u₂ = 0 m/s

After collision the final speed of the both car,v = 2 m/s

There is no any external force on the system that is why linear momentum will be conserved.

Linear momentum P = m v

m₁u₁ + m₂u₂ = (m₂ + m₁) v

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5000 x u₁ = 15000 x 2

5 x u₁ = 15 x 2

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C) 6 m/s

4 0
3 years ago
A ball is thrown off the top of a building and lands on the ground below.
natita [175]

Answer:

Mass and velocity.

Explanation:

Kinetic energy <u>is the energy that an object has due to its movement</u>, mathematically it is represented as follows:

K=\frac{1}{2} mv^2

where m is the mass of the object, and v is its velocity at a given point in time.

So we can see that to find the kinetic energy just before the ball hits the gound, we need the quantities:

  • mass of the ball
  • velocity of the ball before it hits the ground

With the knowledge of these two quantities the kinetic energy of the ball  before touching the gound can be determined.

4 0
3 years ago
Which event is an example of melting?
qaws [65]

Answer:

welding metal

Explanation:

5 0
3 years ago
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