某同学用如图甲所示的装置测量滑块与水平桌面之间的动摩擦因数，实验过程如下：

计算：${\log }_2\sqrt{2}+2^0$=____ 

光滑曲面与竖直平面的交线是抛物线，如图所示，抛物线的方程y=x²，其下半部处在一个水平方向的匀强磁场中，磁场的上边界是y=a的直线（图中的虚线所示），一个小金属块从抛物线y=b（b＞a）处以速度v沿抛物线下滑，假设抛物线足够长，则金属块在曲面上滑动的过程中产生的焦耳热总量是（   ）

如图，公路MN与公路PQ在点P处交汇，且∠QPN=30°，点A处有一所中学，AP=160m．假设拖拉机行驶时，周围100m以内会受到噪音的影响，那么拖拉机在公路MN上沿PN方向行驶时，学校是否受到噪音影响？说明理由；如果受影响，且知拖拉机的速度为18km/h，那么学校受影响的时间是多少秒？

阅读短文，完成下列问题

     I'm Maliya. I am American. I study at Shanghai International School now. I usually get up at 6:30 in the morning and then I take a shower. I go to school at 7:30. We have the first class at 8:10 in the morning. At 12:00 I eat lunch at school. Hamburgers are my favorite food. We finish school at 3:30 in the afternoon. After school, I either go to the library or play tennis with my friends. I never watch TV on school days. I go to bed at 9:00 in the evening.

     Mike is my father. He gets up early every day, at about 5:30. And then he runs for half an hour. After a quick breakfast, he goes to work. He works on the computer at home. He usually works until (直到) about 12:00. He always has a big lunch. After lunch, he continues (继续) to work on the computer until about 6:00. In the evening, he always takes a walk after dinner.