Copyright law is US Code Title 17, and fair use is section 107 of it.
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Yes; fair use does not exclude any types of works.
The term 'fair use' is open to interpretation. A mobile phone company might give you '...unlimited texts - subject to our fair use policy...' This usually means your 'average' use might mean sending 100 texts a week, and would be covered under 'fair use'. If you suddenly upped your texts to 500 a week because of an 'unlimited' plan - that could be seen as unfair use - and the company would likely cap your usage.
No it is not. If the battery has just worn out because of regular use, it is not covered under warranty. If it is an odd circumstance, then it may be covered under warranty.
No. Legally, since it doesn't fall under the fair use exception, you would need to seek permission to use someone elses material.
While fair use allows for limited use of copyrighted material without permission under certain conditions, it is still recommended to cite sources when using them in your work. Citing sources helps give credit to the original creators and prevents plagiarism, even if your use may fall under fair use guidelines.
No, you cannot use your husband's Health Savings Account (HSA) if you are not covered under his insurance plan. HSAs are tied to specific high-deductible health insurance plans, and only the account holder and their dependents covered under that plan can use the funds in the HSA.
Under fair use, using copyrighted material for commercial purposes, reproducing the entire work, and causing financial harm to the copyright owner are prohibited.
Yes, you can use your Health Savings Account (HSA) to pay for qualified medical expenses for a child, even if they are not covered under your insurance plan.
All cited images in (or on) this (what ever you need it for) are used under the Fair Use Interpretation of Copywrite Laws. All others are used by permission.
In most cases yes, permission is required to use copyrighted material. There are exceptions however. The "fair use" exception allows for the use of a portion of a copyrighted work, without permission, for news reporting, review, criticism, or scholastic purposes. Additionally the "right of first sale" allows you sell or otherwise distribute works you have legally obtained.
Album art on the English wikipedia is under the fair-use licence, meaning that it is not free. If the country you plan to use the artwork in supports fair use than you can use it. If not you can't.