如图，被称为“世界最快的水陆两栖车”的“美洲豹”已经在海外正式上市。该车车身质量约1300千克，长度4.6米，可乘坐4人，水上速度可达到72千米/时，陆上速度最高达130千米/时．“美洲豹”车轮可通过液压方式进入底盘，使用一个喷气驱动控制杆从汽车切换成快艇，只需要短短15秒。

（1）“美洲豹”在陆地上以最高速度行驶0.5小时，通过的路程是多少千米？

（2）“美洲豹”停在平直公路上时，轮眙与地面的总接触面积大约为0.1米²，此时对地面的压强约多少帕？

（3）“美洲豹”以最高速度在水上行驶时，受到的阻力约是车重的0.3倍，此时发动机的功率约多少瓦？

阅读短文，根据其内容回答问题。
These days, many Chinese people are happy about a piece of news. What is it? China may become the second largest economy (经济体) in the world. It’s only behind the US.
But is China the second richest country, too?
No. The economy is like a cake. The US, Japan and China each makes one. China makes the second biggest cake. But lots of people have to eat it. Why? There are 1.3 billion people in China. And there are only 300 million people in the US and 127 million in Japan. So, in China, each person only gets a very, very small piece of cake. But people in the US and Japan have bigger pieces.
China is not as rich as the US and Japan. For example, in the US, in every 100 people, 75 can surf the Internet; in Japan it is 74 in 100. But in China, only 26 people in 100 use the Internet.
China’s large economy brings good things. People in China have more jobs and money. We also have more influence (影响) in the world.

某同学探究同周期元素性质的递变规律，并讨论影响化学反应速率的因素，选用的试剂如下，镁条、铝条、铝粉、钠、新制的Na₂S溶液，新制的氯水，0.5mol/L的盐酸，3mol/L的盐酸，酚酞试液，其设计的实验方案及部分实验现象如下表：

请回答下列问题：