您所在的当前位置：高中物理试题 >

近地卫星和同步卫星

> 图中的圆a、b、c，其圆心均在地球的自转轴线上，对环绕地球作匀速圆周运动而言以不正确的是（　　） A．卫星的轨道可能为a B．卫星的轨道可能为b C．卫星的轨道可能为c D．同步卫星的轨道只可能为b

问题：

发布时间：2024-09-09

图中的圆a、b、c，其圆心均在地球的自转轴线上，对环绕地球作匀速圆周运动而言以不正确的是（　　）

A．卫星的轨道可能为a

B．卫星的轨道可能为b

C．卫星的轨道可能为c

D．同步卫星的轨道只可能为b

参考答案：

提问用户：jv***9es

可能感兴趣的题目：

1 (8分)含有弱酸HA和其钠盐NaA的混合溶液，在化学上用作缓冲溶液。向其中加入少量酸或碱时，溶液的酸碱性变化不大。（1）向该溶液中加入少量盐酸时，发生反应的离子方程式是向其中加入少量KOH溶液时，发生反应的离子方程是（2）现将0.04 mol·L -1HA溶液和0.02 mol·L -1NaOH 溶液等体积混合，得到缓冲溶液。 ①若HA为HCN，该溶液显碱性，则溶液中c(Na +) c(CN −)(填“<”“＝”“>”) ②若HA为CH 3COOH ,该溶液显酸性。溶液中所有的离子按浓度由大到小排列的顺序是。
2 从20世纪80年代起，香港制造业开始不断迁往内地，到目前为止，已有85%以上迁到内地．港商在珠江三角洲开设的工厂有2万多家，雇用劳动力达300万人，几乎相当于香港制造业工人人数的5倍．据此回答问题．根据上述资料可知，近年来港澳地区许多企业在内地建厂的主要原因是 A.祖国内地拥有众多的廉价劳动力、土地和能源 B.祖国内地有各种丰富的资源，为工业生产提供原材料 C.港澳企业家愿意多为祖国建设作贡献 D.内地拥有丰富的资金、技术、人才和管理经验
3 下列描述物体做匀速直线运动的图象是（　　） A． B． C． D．
4 （22分）阅读图文材料，回答下列各题。 20世纪80年代末，随着经济全球化的发展，很多跨国公司为了降低成本、提高效率，将软件设计等信息技术服务业务，外包给其他专业团队来完成。从发展中国家来看，近十几年承接来自美国、欧洲和日本等世界发达国家的服务外包的发展中国家数量激增，已成为全球服务外包市场上重要承接方。其中图7所示国家（软件外包产业中心的形成年代与分布）每年承接的软件外包业务约占全球软件外包市场的2/3。该国被形象地称为“世界办公室”。（1）据图简述所示国家软件外包产业中心发展变化的总体趋向。（6分）（2）简析该国国际信息技术服务外包产业发展迅速的优势条件。（8分）（3）简要说明服务外包产业的发展给该国产业经济带来的有利影响。（8分）
5 两球 A、B在光滑水平面上沿同一直线，同一方向运动， m A="1" kg， m B="2" kg， v A="6" m/s， v B="2" m/s。当 A追上 B并发生碰撞后，两球 A、B速度的可能值是（） A． v A′="5" m/s， v B′="2.5" m/s B． v A′="2" m/s， v B′="4" m/s C． v A′=－4 m/s， v B′="7" m/s D． v A′="7" m/s， v B ′="1.5" m/s
6 (2013·高考安徽卷)It’s said that the power plant is now ________ large as what it was. A．twice as B．as twice C．twice much D．much twice
7 阅读理解。 WASHINGTON - President Obama and his wife, Michelle, handed out Halloween treats to area children and military families at the White House Sunday evening. Local students between 6 and 14 years old, along with children from military families, were invited to celebrate Halloween on the North Lawn. The president and first lady, along with Mrs.Obama"s mother, Marian Robinson, spent about 30 minutes passing out goodie bags.Obama wished each child a happy Halloween as he distributed the treats, pausing occasionally for hugs or to comment on costumes. Later, the military families continued the celebration inside the White House. The first couple joked to assembled reporters about children walking the long driveway in order to work off (消化掉) the snacks."This is the Let"s Move method of trick-or-treating (不给糖就捣蛋)," Obama said, referring to Mrs.Obama"s campaign to combat childhood obesity (肥胖). The goodie bags contained a box of White House M&Ms, a cookie made by pastry chef (点心师) Bill Yosses, and dried fruit. As they made their way across the lawn, the children meet a vast range of costumed characters ranging from a spooky Frankenstein (科学怪人,小说《弗兰肯斯坦》的主角) to the Scarecrow from "The Wizard of Oz ." Music from a jazz band dressed in pirate gear rang out across the White House grounds. Multicolored pumpkins and gourds lined the driveway - individually, in gravity-defying stacks and as part of a large mound over 5 feet tall.Pumpkin-headed scarecrows (稻草人) made of cornstalks loomed over the path with menacingly raised arms.Under the White House portico, a mobile resembling bats flying through clouds fluttered around a lantern. Some of the local trick-or-treaters were students at Bancroft Elementary, which helps tend the first lady"s White House garden, and Tubman Elementary, which has a relationship with the White House chefs. After trick-or-treating ended, the Obamas stood near the front door, welcoming the military families inside, helping children climb the short flight of steps and thanking parents for their service. 1.What is the news report mainly about? A. President Obama and first lady celebrated Halloween with children. B. President Obama and his wife Michelle handed out Halloween treats to children. C. Children from military families were invited to celebrate Halloween at the White House. D. Trick-or-treaters met a vast range of costumed characters from Frankenstein to the Scarecrow. 2. From the passage, we know that ______ do not necessarily appear when people celebrate Halloween. A. Goodie bags B. Pumpkins and Gourds C. White House M&Ms D. Costumed characters 3.When celebrating Halloween at the White House, the Obamas did the following EXCEPT______. A. Wishing each child a happy Halloween B. Thanking reporters for their covering the event C. Helping children climb the short flight of steps D. Hugging children and commenting on their costumes 4.The passage is mainly developed by ______. A. analyzing causes B. making comparisons C. examining differences D. following the time order
8 --- The couple _______ after 10 years’ marriage. --- What a pity. Their child may suffer a lot from this. A．broke out B．broke down C．broke up D．broke into
9 一个物体在三个力的作用下处于静止状态．现在使其中的一个力的大小在一段时间内均匀减小到零，然后又在相同的时间内从零均匀增大到原来的大小（此力的方向始终未变），在此过程中其余各力均不变．下列各图中，能正确描述此过程中物体加速度和速度变化情况的是（　　） A． B． C． D．
10 Mr.Smith, there"s a man at the front door who says he has news for you ________ vital importance. A．of B．with C．in D．from

图中的圆a、b、c，其圆心均在地球的自转轴线上，对环绕地球作匀速圆周运动而言以不正确的是（ ） A．卫星的轨道可能为a B．卫星的轨道可能为b C．卫星的轨道可能为c D．同步卫星的轨道只可能为b

可能感兴趣的题目：

图中的圆a、b、c，其圆心均在地球的自转轴线上，对环绕地球作匀速圆周运动而言以不正确的是（　　）

A．卫星的轨道可能为a

B．卫星的轨道可能为b

C．卫星的轨道可能为c

D．同步卫星的轨道只可能为b