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svp [43]
3 years ago
12

PLEASE HELP WILL GIVE BRAINLIEST!!! DUE SOON!! GIVE ME 2 REASONS WHY

Physics
2 answers:
TiliK225 [7]3 years ago
6 0

Answer:

★ For example, cold water has a higher density than warmer water. In Addition, water gets colder with depth because of the coldness, of the salty ocean water which sinks to the bottom of the ocean basins below the less dense water near the surface

Explanation:

Hope you have a great day :)

BartSMP [9]3 years ago
4 0
Cold water has a higher density than watm water. water gets colder with depth because of the cold, salty ocean water sinks to the bottom of the ocean basins below the less dense water near the surface
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A 14.3-g bullet is fired into a 5.21 kg block of wood. The block is attached to a spring that has a spring force constant of 450
Natasha2012 [34]

Answer:

The initial speed of the bullet is v_{o} = 889.199\,\frac{m}{s}.

Explanation:

The collision between bullet and block is inelastic and let suppose that motion occurs on a horizontal surface, so that changes in gravitational potential energy can be neglected. Initially, the intial speed of the bullet-block system can be determined with the help of the Work-Energy Theorem and the Principle of Energy Conservation:

K = U_{k} + W_{loss}

\frac{1}{2}\cdot (5.224\,kg)\cdot v^{2} = \frac{1}{2}\cdot \left(450\,\frac{N}{m}\right)\cdot (0.22\,m)^{2} + (0.35)\cdot (5.224\,kg)\cdot \left(9.807\,\frac{m}{s^{2}} \right) \cdot (0.22\,m)

The initial speed of the bullet-block system is:

v \approx 2.383\,\frac{m}{s}

Now, the initial speed of the bullet is determined by applying the Principle of Momentum Conservation:

(0.014\,kg)\cdot v_{o} = (5.224\,kg)\cdot \left(2.383\,\frac{m}{s} \right)

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6 0
3 years ago
The components of vector A are:
dolphi86 [110]

Answer:

              arctg (- 6.5 / 6.0) = -47.2906° ~ 47

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3 years ago
A paved blacktop parking lot was built on what was
USPshnik [31]

Answer:

The answer is B. less permeability.

Explanation:

5 0
3 years ago
A spider twirls a 25 mg fruit fly around in a circle with radius 17.6 cm at the end of a web. If the velocity of the fly is 110
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Answer:

Fc =  1.7x10^-4 N

Explanation:

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