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Jlenok [28]
3 years ago
15

The fossil record shows scientists that

Physics
2 answers:
erastova [34]3 years ago
4 0

tells the story of the past and shows the evolution of forms over millions of years.

Aleonysh [2.5K]3 years ago
3 0

Answer:

The  fossil record tells the story of the past and shows the evolution of forms over millions of years

Explanation:

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A bullet with momentum of 2.8 kg·m/s [E] is traveling at a speed of 187 m/s. The mass of the bullet is: a) 67 g b) 15 g c) 0.067
Vesna [10]

Answer:

The mass of the bullet is 15 g.

(b) is correct option.

Explanation:

Given that,

Momentum = 2.8 kg m/s

Speed = 187 m/s

We need to calculate the mass of the bullet

Using formula of momentum

P = mv

m = \dfrac{P}{v}

Where, P = momentum

v = speed

Put the value into the formula

m = \dfrac{2.8}{187}

m = 0.015\ kg

m = 15\ g

Hence, The mass of the bullet is 15 g.

4 0
3 years ago
How can a nuke (Nuclear bomb) be hotter than the sun?
Art [367]
Cause it can take so much heat then when the sun beams down on it then the process gets alot more complicated it gets a little hotter than it starts to get more and more hotter .
6 0
3 years ago
1. Fill in the blanks. (3 pts)
Usimov [2.4K]

Answer:

a) mass

b) Newtons

c) momentum formula where p stands for momentum, m stands for mass, and v stands for velocity

Hope this helps!

4 0
3 years ago
Read 2 more answers
A massless string connects a 1.00 kg mass to a 3.00 kg cart which is resting on a frictionless horizontal surface. The mass hang
Romashka-Z-Leto [24]

Both masses will have the same acceleration. The cart accelerates to the right with a magnitude of 4.9 m/s^{2}. The correct answer is 4.90 m/s^{2}

Given that a massless string connects a 1.00 kg mass to a 3.00 kg cart which is resting on a frictionless horizontal surface.

Let M = 1kg and m = 3 kg

Since the horizontal surface is frictionless, the tension in the string will be the same. when the mass is hanged over a frictionless pulley, the tension will also be the same.

When the mass is released, the cart accelerates to the right can be calculated  from Newton' second law of motion. That is,

M( g + a) = m(g - a)

1(9.8 + a) = 3( 9.8 - a)

9.8 +a = 29.4 - 3a

collect the like terms

4a = 19.6

a = 19.6/4

a = 4.9 m/s^{2}

Therefore, the cart accelerates to the right with a magnitude of 4.9 m/s^{2}. The correct answer is 4.90 m/s^{2}

Learn more about dynamics here: brainly.com/question/24994188

5 0
3 years ago
A function is defined by f(x)= 6x+1.5. What is f(2.5)?
sveticcg [70]

Answer:

f(2.5) = 16.5

General Formulas and Concepts:

<u>Pre-Algebra</u>

Order of Operations: BPEMDAS

  1. Brackets
  2. Parenthesis
  3. Exponents
  4. Multiplication
  5. Division
  6. Addition
  7. Subtraction
  • Left to Right<u> </u>

<u>Algebra I</u>

  • Functions
  • Function Notation

Explanation:

<u>Step 1: Define</u>

<em>Identify</em>

[Function] f(x) = 6x + 1.5

[Given] f(2.5) is <em>x</em> = 2.5 for function f(x)

<u>Step 2: Evaluate</u>

  1. Substitute in <em>x</em> [Function f(x)]:                                                                           f(2.5) = 6(2.5) + 1.5
  2. Multiply:                                                                                                             f(2.5) = 15 + 1.5
  3. Add:                                                                                                                   f(2.5) = 16.5
4 0
3 years ago
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