


Tính toán tỷ số truyền cần thiết để kim phút quay đúng tốc độ.
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$34.99
$29.99
Shipping and Returns Policy
- Deliver to United States » Shipping Policy «
- - Shipping Cost: $5.99
- - Handling time: 2-3 business days
- - Transit time: 7-10 business days
- Eligible for » Returns & Refund Policy « within 30 days from the date of delivery
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tốc độ góc của kim phút là
- So sánh tốc độ góc tự quay của các hành tinh.
- Hình dạng của kim đồng hồ có ảnh hưởng đến tốc độ góc không?
- Khó 147
- Trung bình 26
- Ví dụ về một hệ thống như vậy (ví dụ bánh xe lăn không trượt).
- So sánh tỷ lệ tốc độ góc của kim giờ, kim phút và kim giây.
- Trung bình 166
- Trung bình 309
- Trung bình 184
- Khó 100
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Next Day Delivery by USPS
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Order by 9pm (excludes Public holidays)
$11.99
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Express Delivery - 48 Hours
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Order by 9pm (excludes Public holidays)
$9.99
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Standard Delivery $6.99 Find out more
Delivered within 3 - 7 days (excludes Public holidays).
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Store Delivery $6.99 Find out more
Delivered to your chosen store within 3-7 days
Spend over $400 (excluding delivery charge) to get a $20 voucher to spend in-store -
International Delivery Find out more
International Delivery is available for this product. The cost and delivery time depend on the country.
You can now return your online order in a few easy steps. Select your preferred tracked returns service. We have print at home, paperless and collection options available.
You have 28 days to return your order from the date it’s delivered. Exclusions apply.
View our full Returns and Exchanges information.
Our extended Christmas returns policy runs from 28th October until 5th January 2025, all items purchased online during this time can be returned for a full refund.
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