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avanturin [10]
3 years ago
11

Using a streak test on a mineral that is harder than 7 on Mohs scale would not be very useful True or False

Physics
1 answer:
aliya0001 [1]3 years ago
8 0

Answer: True true false true

Explanation:

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Hi, Solve for λ<br> E=hc/λ
Paul [167]

Answer:

λ=hc/E

Explanation:

E=hc/λ

Eλ=hc

λ=hc/E

4 0
3 years ago
In which region of the periodic table do the elements NOT normally react chemically with other elements?
horsena [70]

We would say that it would be metals.

6 0
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3. When does the iron core in an electromagnet become magnetic?​
rosijanka [135]

Answer: When electricity flows through it.

Explanation:

The electromagnet exhibits magnetic properties only as soon as current flows through the nucleus. Namely, the electric current in the space around the electrical conductor through which it passes creates a magnetic field. Unlike a permanent magnet, which has a permanent property of magnetism, the electromagnet is a temporary magnet because the magnetic field also disappears when the current ceases.

3 0
3 years ago
Calculate the weight of your energy car if it has a mass of 233.85 kg.
lianna [129]

Explanation:

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3 0
2 years ago
A girl rolls a basketball across a basketball court. The ball slowly decelerates at a rate of -0.20m/s^2. If the initial velocit
Dafna1 [17]

By equation of motion :

2as=v^2-u^2\\\\s=\dfrac{v^2-u^2}{2a}\\\\s=\dfrac{0^2-2^2}{2\times( -0.2)}\\\\s=10\ m

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