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enot [183]
3 years ago
11

In a science lab, Thomas used "universal indicator" to investigate the pH of some household products. He created a reference tab

le that shows the color of universal indicator at different pH values. He also tests solutions of these pH values to see if they react with metals and records his observations. image Thomas tested an unknown substance and found that the universal indicator turns purple and it does not react with metal. Based on this information, which of the following BEST predicts if the unknow
Physics
1 answer:
dolphi86 [110]3 years ago
6 0

Usually

pH scale measures from 1 to 14

Purple colour indicates pH as 14

Hence it's an base

But it doesn't react with metals to form salts and hydrogen gas.

It's sure it's non metal but not base

One possibility is that it's Carbon compound or Graphite compound which reacts like base but a metal in real sometimes

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Transform active margins are associated with which type of boundary? Convergent Transform Divergent
SSSSS [86.1K]

Answer:

Transform active margins are associated with which type of boundary?

Transform boundary

Explanation:

The transform boundary is a boundary where one plates(crust) slides past another plate horizontally. This kind of plate movement have been detected to exist between the interaction of the North pacific plates(continental plate) and the pacific plates(oceanic plates) .

At the transform margin the crust are usually broken. But overall crust are neither created nor destroyed . The transform margin region are active as it is marked by shallow-focus earthquakes .

Along the fractured zone where this transform movement occurs is known to create extensive transform faults .Notable transform fault that exist in this kind of boundary(transform) is the San Andrea fault and Alpine Fault.  

The motion of this plates can occur on a single fault or on a group of faults.

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4 years ago
What is the 3 word definition for momentum?
Nesterboy [21]

Answer:

mass multiplied by velocity (4 words but uh

3 0
2 years ago
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Question 3 of 10
Volgvan

Answer:

This oxygen reacts with the carbon of the positive electrodes, forming carbon dioxide, so they gradually burn away. As a result, the positive electrodes have to be replaced frequently. This adds to the cost of the process.

5 0
3 years ago
Water flows at 0.850 m/s from a hot water heater, through a 450-kPa pressure regulator. The pressure in the pipe supplying an up
grin007 [14]

Answer:

The velocity is  v_2= 0.45 \ m/s

Explanation:

From the question we are told that

      The initial speed of the hot water is  v_1 = 0.85 \ m/s

     The pressure from the heater  P_1  =  450 \ KPa = 450 *10^{3} \ Pa

      The height of the hot water before flowing is  h_1 = 0 \ m

      The height of bathtub above the heater is h_2  =  3.70 \ m

       The pressure in the pipe is P_2 =  414 KPa = 414 *10^{3} \ Pa

       The density of water is \rho =  1000 \ kg/m^3

Apply Bernoulli equation

      P_1 + \rho gh_1 +\frac{1}{2} \rho v_1^2  =  \rho g h_2 + \frac{1}{2}\rho v_2 ^2

Substituting values

     (450 *10^{3}) + (1000 * 9.8 * 0) + (0.5 * 1000 * 0.85^2)  =  (1000 * *9.8*3.70) + (0.5*1000*v_2^2 )

=>   v_2^2 =  \frac{ (450 *10^{3}) + (1000 * 9.8 *0 ) + (0.5 * 1000 * 0.85^2) -[ (1000 * *9.8*3.70) ]}{0.5*1000}

=>   v_2= \sqrt{ \frac{ (450 *10^{3}) + (1000 * 9.8 * 0) + (0.5 * 1000 * 0.85^2) -[ (1000 * *9.8*3.70) ]}{0.5*1000}}

=>    v_2= 0.45 \ m/s

4 0
3 years ago
How would I have to calculate this?
guajiro [1.7K]

Answer:

by the product of mass and acceleration..

3 0
3 years ago
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