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4vir4ik [10]
3 years ago
7

Streak is a reliable identifier of a mineral. true or false

Physics
2 answers:
inysia [295]3 years ago
8 0

Answer:

true?

Explanation:

Im positive but not 100% sure wait for someone else to answer and see if they say the same.

vodka [1.7K]3 years ago
6 0

Answer:

Streak shows the true color of the mineral. Non-metallic particles tend to reflect most of the light so they appear lighter in color or almost white. Because streak is a more accurate illustration of the mineral's color, streak is a more reliable property of minerals than color for identification.

Explanation:

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Misha Larkins [42]

Answer:

Fossil-fueled cars are still outnumbering the alternative and replacement-fueled cars because they are generally cost-effective and are efficient.

Explanation:

<em>Fossil fuels</em> are non-renewable energy that cannot be replenished. Although many people know how harmful using them can be to the environment, still, people continue to buy cars that are powered by it. This is because, <em>using fossil-fueled cars can help you save money</em> compared to using<em> replacement-fueled cars.</em><em> Its engines are also more powerful,</em> which means they can arrive at their destination in just a few minutes. <u>This makes it efficient.</u> The cost of maintaining a fossil-fueled car is less expensive compared to<em> replacement-fueled cars.</em> People are naturally keen when it comes to budgeting, thus, many people still buy cars powered by fossil fuels.

3 0
3 years ago
A rock climber hangs freely from a nylon rope that is 15 m long and has a diameter of 8.3 mm. If the rope stretches 5.1 cm, what
irinina [24]

Answer:

Mass of the climber = 69.38 kg

Explanation:

Change in length

        \Delta L=\frac{PL}{AE}

Load, P = m x 9.81 = 9.81m

Young's modulus, Y = 0.37 x 10¹⁰ N/m²

Area

       A=\frac{\pi (8.3\times 10^{-3})^2}{4}=5.41\times 10^{-5}m^2

Length, L = 15 m

ΔL = 5.1 cm = 0.051 m

Substituting

       0.051=\frac{9.81m\times 15}{5.41\times 10^{-5}\times 0.37\times 10^{10}}\\\\m=69.38kg  

Mass of the climber = 69.38 kg

6 0
3 years ago
I am looking to buy a new car this summer. I want to buy the fastest car I can and in my
Mashcka [7]

Answer

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Explanation:

7 0
3 years ago
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VladimirAG [237]

Answer:

242.27929622673 meters

5 0
3 years ago
What is the general aerobic activity recommendation for an exercise frequency that is at least five days per week?
Fantom [35]

Explanation:

Minimum of aerobic activity 150 minutes, or a mix of moderates and intensive exercise 75 minutes of vigorous aerobic activity a week. We can  extend this practice throughout the week with the instructions. Mild aerobic workouts might include practices like quick strolling or swimming, while activity like running can include strong aerobic activity.

4 0
3 years ago
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