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larisa [96]
3 years ago
6

An unknown substance was observed to have the following properties: colorless liquid that feels slippery, pH of 8.5, turns red l

itmus to blue. Based on these properties, what is the best classification of this substance?
acid


base


element


salt
Physics
2 answers:
natka813 [3]3 years ago
5 0

Answer:it’s a base

Explanation: this is because the bases have a very bitter taste but a very slippery feel at the same time leading to a substance with a ph of 8.5 and the red turning to blue so this is a base

Mashcka [7]3 years ago
3 0

Answer:

It is a base

Explanation:

Because

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Luba_88 [7]

Answer:

F = 4399 KN

Explanation:

given,

mass of automobile = 890 kg

initial speed = 48 km/h

                     = 48 × 0.278 = 13.34 m/s

using equation of motion

v² = u² + 2 a × s

0 = 13.34² - 2 a ×0.018

a = \dfrac{13.34^2}{0.036}

a = 4943.21 m/s²

F   = m × a

F   = 890 × 4943.21

F   =  4399456.9 N

F = 4399 KN

hence, the  Net force is F = 4399 KN

4 0
3 years ago
Water runs out of a horizontal drainpipe at the rate of 135 kg/min. It falls 3.1 m to the ground. Assuming the water doesn't spl
Arlecino [84]

Answer:

The average force exerted by the water on the ground is 17.53 N.

Explanation:

Given;

mass flow rate of the water, m' = 135 kg/min

height of fall of the water, h = 3.1 m

the time taken for the water to fall to the ground;

h = ut + \frac{1}{2}gt^2\\\\h = 0 +  \frac{1}{2}gt^2\\\\t = \sqrt{\frac{2\times 3.1}{9.8} } \\\\t = 0.795 \ s

mass of the water;

m = m't\\\\m = 135 \ \frac{kg}{min} \ \times \ 0.795 \ s \ \times \ \frac{1 \ \min}{60 \ s} \ = 1.789 \ kg

the average force exerted by the water on the ground;

F = mg

F = 1.789 x 9.8

F = 17.53 N

Therefore, the average force exerted by the water on the ground is 17.53 N.

7 0
3 years ago
A temperature reading of zero on the Celsius scale is equal to absolute zero.
GrogVix [38]
No, that's false.  'Zero' on the Celsius scale
is 273 on the absolute scale.
8 0
3 years ago
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Why is evidence of meteorite impact rare on earth, despite the fact that meteoroids often pass into earth's atmosphere?
DENIUS [597]
The fact is your rooftop is covered with dust particles from meteorites. Outerspace is full of debris. Every day, thousands of meteorites invade our home but thanks to atmosphere for keeping us safe from them :D
When these meteorites enter our atmosphere, they experience resistance to the particles present in our atmosphere. As a result they catch fire(and eventually melts) and lose all their energy before falling on the surface. This happens with very small sized meteorites but when bigger ones enter, they surely hit the surface because they are difficult to melt.
Thanks to Jupiter for saving us from asteroids. Bigger ones rarely enters our atmosphere because of Jupiter's gravitational pull. It lures all the debris towards itself (:
5 0
3 years ago
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melomori [17]

Answer:

19,551 J!

Explanation:

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PE = (95)(9.8)(21)

PE = 19,551 Joules

5 0
3 years ago
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