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1.While smart cities offer enhanced convenience and efficiency, they also pose challenges related to privacy and social equity.

2.Firstly, smart cities provide enhanced convenience through interconnected technologies. For instance, smart traffic management systems can reduce congestion and travel times.

3.Furthermore, the digital divide can exacerbate social inequalities. Not all residents have equal access to technology and digital literacy, which can create disparities in employment, education, and access to essential services

4.To ensure the successful implementation of smart cities, it is crucial to address these challenges through robust regulations, public education, and inclusive policies

• Cơ năng truyền cho vật: $W=37.5$

• Độ cao: $h=3$

• Wd=23WtWd​=32​Wt​

• Gia tốc trọng trường: $g=10$
   

• WdWd​ là thế năng trọng trường:

  Wd=mghWd​=mgh

• WkWk​ là động năng:

  Wk=Wt−WdWk​=Wt​−Wd​

  Theo bài toán, ta có:

  Wd=23Wt

  Từ Wt=37.5Wt​=37.5 J, ta thay vào phương trình:

  Wd=23×37.5=25 JWd​=32​×37.5=25 J

  Mà Wd=mghWd​=mgh, nên:

  $$25=m\times 10\times 3$$m=2530=0.833 kg

  Ta có Wk=Wt−WdWk​=Wt​−Wd​:

  Wk=37.5−25=12.5 J

• Lực kéo: $F=200$

• Góc hợp với phương ngang: θ=60∘θ=60∘

• Quãng đường: $s=10$

• Thời gian: 

• $t=5$
  $$A=Fs\cos \theta$$A=200×10×cos⁡60∘ A=200×10×cos60∘A=200×10×0.5=1000 J

• tP=tA​P=10005=200 WP=51000

•