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yarga [219]
4 years ago
14

Which statement is true? A) Batteries supply alternating current. B) Electromagnetic induction supples direct current. C) In the

US, the main source of electricity is from direct current. D) In the US, the supply of AC mainly relies upon our natural resources.
Physics
2 answers:
fenix001 [56]4 years ago
5 0
The correct statement is in the US the supply of AC mainly relies upon our natural resources.<span>

</span>
Ratling [72]4 years ago
3 0

The correct choice is

D) In the US, the supply of AC mainly relies upon our natural resources.

natural resources like gas , petroleum , coal and water are mainly used to generate electricity. gas petroleum and coal are used in thermal plants to generate the electricity. while natural resources like water and wind are used to rotate the large turbines to generate the electricity. In nuclear plants, nuclear materials are used.

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What is the magnetic force on a proton that is moving at 5.2 x 107 m/s to the
alisha [4.7K]

Answer:

1.1648×10⁻¹¹ N

Explanation:

Using

F = qvBsinФ..................... Equation 1

Where F = Force on the proton, q = charge, v = velocity, B = magnetic Field, Ф = angle between the magnetic Field and the velocity.

Note: The angle between v and B = 90°

Given: v = 5.2×10⁷ m/s, B = 1.4 T, q = 1.6×10⁻¹⁹ C, Ф = 90°

Substitute into equation 1

F = 1.6×10⁻¹⁹(5.2×10⁷)(1.4)sin90°

F = 11.648×10⁻¹²

F = 1.1648×10⁻¹¹ N.

6 0
3 years ago
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What happens when calcium reacts with chlorine?
larisa86 [58]

Answer:

Calcium chloride in an ionic compound. The calcium atom loses two electrons, and each chlorine atom gains one electron, to form a full outer shell of electrons.

5 0
3 years ago
(a) An elevator of mass m moving upward has two forces acting on it: the upward force of tension in the cable and the downward f
Katen [24]

Answer: T is greater

Explanation:

Since the elevator is moving against gravity more work will be done on the rope

T= m(g+a)

8 0
3 years ago
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As part of a safety investigation, two 1900 kg cars traveling at 20 m/s are crashed into different barriers. Part A Find the ave
DedPeter [7]

Answer:

-29.2\times 10^{3} N

Explanation:

We are given that

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Initial speed of car=u=20 m/s

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F_{avg}=\frac{mv-mu}{1.3}

F_{avg}=\frac{1900(0)-1900(20)}{1.3}

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Hence, the average force exerted on the car that hits a line of water barrels=-29.2\times 10^{3} N

8 0
4 years ago
How can a moving coil galvanometer can be made into a dc ammeter?
Dennis_Churaev [7]
I am absolutely sure that the way how can a moving coil galvanometer can be made into a dc ammeter is of course by connecting a. low resistance across the meter. You should remember that you must connect <span>a shunt resistor straight across the galvanometer. Do hope this answer will help you! Regards.</span>
7 0
4 years ago
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