How quickly will I receive my key after purchase?

Most keys are delivered instantly by sellers after payment confirmation. You will receive the key by email or directly on the website.

Can I return or exchange a key if it doesn’t work?

Usually yes, key sellers provide a guarantee on all keys. In case of activation issues, contact the seller’s chat for assistance.

Are keys supported for different platforms — Steam, Xbox, PlayStation, and others?

Yes, on Irongamers you will find keys and accounts for most popular platforms, including Steam, EA Play, Uplay, Xbox, Twitch, and Epic Games.

Can I get discounts and bonuses for referrals?

Usually yes, sellers can give personal discounts on new games and keys.

What payment methods are available?

We support various payment methods: bank cards, e-wallets, SBP, and other convenient options.

How is security and confidentiality ensured when buying?

The purchasing process takes place on a special page that uses modern data protection methods, encryption, and guarantees full confidentiality of your payment and personal data.

Task 00039.

Content: 00039.png (24.61 KB )
Uploaded: 09.05.2020

Positive responses: 0
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Sold: 0
Refunds: 0

Seller: Юрий Физик

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Description

An electric train at a speed of 54 km / h consumes a power of 9000 kW. Efficiency of electric motors 80%. Determine the traction force developed by electric motors.

Additional information

Detailed solution with a brief record of the conditions, formulas and laws used in the decision, the conclusion of the calculation formula and the answer.
If you have any questions about the decision, write. I will try to help. File in image format.

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