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3 years ago

PLEASE HELP 100 POINTS!!

2 answers:

8 0

Your answer is: C. feels slippery. High PH levels indicate base-like substances. They feel slippery because bases dissolve the oils created by your skin. This reaction creates a very slippery substance.

saul85 [17]3 years ago

8 0

Hi there!

The answer would be C. feels slippery. This is because at a base solution brings out and breaks down acids and oils which causes it to feel slippery to the touch.

Your friend, ASIAX

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A sports car is advertised to be able to stop in a distance of 50.0 m from a speed of 80 km. What is its acceleration and how ma

Flauer [41]

Explanation:

Given that,

Initial speed of the sports car, u = 80 km/h = 22.22 m/s

Final speed of the runner, v = 0

Distance covered by the sports car, d = 80 km = 80000 m

Let a is the acceleration of the sports car. It can be calculated using third equation of motion as :

$v^2-u^2=2ad$

$a=\dfrac{v^2-u^2}{2d}$

$a=\dfrac{0-(22.22)^2}{2\times 80000}$

$a=-0.00308\ m/s^2$

Value of g, $g=9.8\ m/s^2$

$a=\dfrac{-0.00308}{9.8}\ m/s^2$

$a=(-0.000314)\ g\ m/s^2$

Hence, this is required solution.

8 0

3 years ago

Please help me on this 1 assignment im giving 25 points GOOD LUCK!

kati45 [8]

Answer:

Explanation:

im sorry if this doesn't help but i think its A

3 0

3 years ago

011 10.0 points

Sedbober [7]

<h2>The temperature of the air is 66.8° C</h2>

Explanation:

From the Newton's velocity of sound relationship , the velocity of sound is directly proportional to the square root of temperature .

In this case The velocity of sound = frequency x wavelength

= 798 x 0.48 = 383 m/sec

Suppose the temperature at this time = T K

Thus 383 ∝ $\sqrt{T}$ I

The velocity of sound is 329 m/s at 273 K ( given )

Thus 329 ∝ $\sqrt{273}$ II

Dividing I by II , we have

$\frac{383}{329}$ = $\sqrt{\frac{T}{273} }$

or $\frac{T}{273}$ = 1.25

and T = 339.8 K = 66.8° C

4 0

4 years ago

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HACTEHA [7]

Answer:

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Explanation:

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3 years ago

Acceleration is always act in the direction of

hjlf

Answer:

Acceleration acts always in the direction. Of the displacement. Of the initial velocity.

5 0

3 years ago