một mạch điện gồm 2 loại bóng đèn có gi 6v-3w và 3v-1w mắc thành 5 dãy song song rồi nối tiếp với điện trở r là một cuộn dây gồm 125 vòng quấn thành một lớp trên lõi hình trụ có đường kính 2cm, dây có đường lì 1mm, có p=3.10^ trừ 7 tính số đèn mỗi loại

Thomas his older brothers, who own a junk yard, on the weekends to earn extra money. he likes to them push broken-down cars to the back of the junk yard because it makes him feel strong. last saturday, they pushed three cars with different weights, and he noticed he used different amounts of force for each one. the cars were the following weights: white car: 2,700 kg red car: 1,500 kg blue car: 2,100 kg think about how much force is needed to move each car. which correctly lists the cars in order from the most to least amount of force needed to move them? a) white, blue, red b) blue, red, white c) red, white, blue d) white, red, blue

Explain the comparisons between nature and packingtown that appears on pages 81 and 82 answer

The ability to make things happen is also called a. heat b. force c. matter d. energy