求詳解，感恩

OW dyainst factories that cause pollution. 閱讀測驗3 But the universal of our climate message of crisis wareness hing a fever pitch across the with increasing urgency, a pparent every day. For the Vandana Shiva will never forget a lesson she learned at the age of 13. Her parents insisted that she should wear clothing made only of homespun cotton. One day, Vandana, having returned from a boarding school to her home, demanded a nylon dress, the fashion followed by her rich friends. Her mother agreed. “If that is what you want, of course you shall have it,” she said. “But remember, your nylon dress will help a rich man buy a bigger car. And the cotton that you wear will buy a poor family at least one meal.” Did she buy the nylon dress? Of course not! Maybe this experience led to her resolution to fight for social justice in her later years. Now 60, ever visiting Taiwan in 2010, Vandana's main concern these days is how to preserve Indian traditional crops. This is severely attacked by many global companies. They encourage farmers to grow so-called high-yielding crops; many farmers, therefore, turn to high-tech methods and depend on bioengineered seeds, chemical fertilizers and pesticides. As a result, hundreds of traditional crops are disappearing. Contrary to expectation, high-tech agriculture can not rescue Indians from starvation. Bioengineered seeds are expensive and cannot adapt to local conditions. Hundreds of Indian farmers have committed suicide during the past five he world ironment. ns in 1970. years because of failed harvests. But there is hope. Many farmers are returning to traditional methods promoted by Navdanya, an organization based in New Delhi that Vandana helped found 20 years ago. Navdanya encourages farmers to produce native varieties of crops that can be grown with natural fertilizer and no artificial chemicals. It also helps local farmers form their own self-supporting organization and seed bank. nean? +明一 生能但奇 63

麻煩幫我看 1和2題的答案對不對❓

The Tenth Anniversary of iPhone This year, the iPhone reached its tenth anniversary after Apple introduced it to the world in 2007. Since then, the iPhone has become more and more popular. It is also one of the leading brands in the cellphonie DOHA However, around the time the iPhone came out, some people hadn't expected it to be this big. Sorne had even thought it would never come out. market now "Everyone's always asking me when Apple will come out with a cellphone. My answer is,'Probably never'." David Pogue, Sep. 27, 2006, The New York Times “There's no chance that the iPhone is going to get any significant market share.” Steve Ballmer, Apr. 30, 2007, USA Today “Phone set to struggle" Jemima Kiss, Jun. 29, 2007, The Guardian Ten years have passed, but people have not lost the interest in the iPhone. Instead, they expect more from it. This makes the above comments funny to read now. The iPhone, along with the other smartphones, has made the world a smaller place. Everything about 改艺 smartphones has become so much faster, and people's lives have improved in so many ways. This kind of 建立 年 DHE convenience has created a strong bond between people and their smartphones. Don't think so? Let's play a game then! Ask your friends not to touch their smartphones and see how long it takes before they do. Don't be surprised by how quick that is. After all, based on the information collected by a screen lock app, most people check their phones up to 110 times a day. Just when you think smartphones can't get any better, smartphone companies keep coming out with new models. Keeping people interested is important to them, so this trick never gets old. Apple just showed the world their best and most expensive model ever to celebrate their tenth anniversary. Although some people feel the new iPhone costs an arm and a leg, many of them are still interested in it. Even so, it's exciting to imagine where smartphones will take us in the next ten years. Vocabulary anniversary週年纪念日 brand 品牌 significant 有意報的;顯著的 struggle 掙扎 instead 反而 bond 聯結 Screen lock app 屏幕鎖應用程式

麻煩幫我翻譯A選項的意思

1. Which of the following articles is likely to be in the first Lonely Planet book? (A) Incredible Ruins in Asia You Have Never Heard of. (B) Top 10 Best Value Destinations in Greece. (C) Top Tips to Make your African Safari More Affordable. (D) The 10 Most Luxurious Bars and Clubs in Bali. 3865

請問一下 這18題英文時態是這樣填嗎？ 謝謝～😀

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大一普物 請問第10題要怎麼寫？ 尤其是(b)的角度表示我不太會

V 1 Vy A basketba]l player is 15 f horizontally from the center Of the basket, which is 10 了 of ffhe ground. At whatcangle should the player aim the ball from a height of 8.2 ft with a speed of 26 ft/s2 A diver leaves a 3-m board on atrajectory that takes her 2.5 m above the board and then into the wafter ~.8m horizontally from the end ofthe board. At whatspeedl and angle did she leave the board? (3) Show that the position of a particle on a circele_of radius AR With_its center at the origin 1s 品 (eos 你+sin 97 。Where @ is theangle the position vector makes with thex-axis. (b) Ifthe particle is 同 自 全 Inoves-with-constant' Speed y Starting on the x-axis at / 三0, find an expression for 9 interms oftime7 and the period 7/to complete a full circle. (c) Find the magnitude and direction of the acceleration. 訂上若

大一普物 請問第9題要怎麼寫

區9. 10. 一 六 余 條 監工 選hor A basketbal] player is 15 了 horizontally from the center Qf the basket, which is 10 ft off the ground. At whatangb should the player aim the ball from aheight of8.2 ft with a Speed of 26人/s? A diyer leaves a 3-m board on a trajectory that takes her 2.5 m above the board and then into the water 2.8m horizontally from the end ofthe board. At whatspeeil and angle did she leave the board? 半生 (3) Show 也at 了e position of a particle on a circle_ of radius AR With its center at the Orlgin 1S 7三[cos +sin9史, where 幻 is the angle the position vector makes with thex-axis. (b) IFthe partlcle Inoves With constant speed y Starting on 了he x-aXis at /三0, find an expression for 9 interms oftime / and the period 7to complete a full circle. (c) Find the magnitude and direction ofthe aeeeleration.

求解 謝謝

了 」 1-10. A particle moves in aplane elliptical orbit described by the positlon vector f 三 22sin 0 十 2cos 0可 (a) Find y, a, and the particle speed. (b) What is the angle between vand aattime 三 也/20?

1.7 不懂為什麼不是description statistics 是因為後面的change 有經過計算嗎

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18題，感謝

10. [2D and 3D motion] Show that the potential energy U(r) ofFa particle of nass jat aa distance r(> 員 from a planet of Inass 4 and radins 戶話 11. [The cross product] Caleulate the cross product A x B, assuming that A and B both lie in the x-y plane and have the respective nonzero components 4,, 4, and 妖,, 且, 12. [Angular momentum] Show that 主r, the instantaneous position ofa particle of mass mu with respect to a certain origin O, is parallel to its acceleration dv/吧, then the time Tate of change of the angular Inoimentum L with respect to the given origin vanishes 13. [Theorem 了 Show that the torque-angular momentum formnla _箇 7二 is also valid for a two-particle system 放 the origin lies at the center of mass 14. [Theorem IIH] Two particles of respective Inass ml and 2 are connected to the ends of amassless rod and Inove in the uniform gravitational field g ofthe earth. (a) What is the acceleration of their center of nass Telative to a Newtonian origin O? (b) Show that the angular Inomentum of the two particles about their center of nass 生 aconstant of the motion. 15. [Moments of inertia] Calculate the moment of inertia ofathin, uniform rod of mass m and length / about an axis perpendicular to the rod and at a distance q from one end. 16. [Rotation about a fixed axis] Consider the rotating cylinder in Figure, and suppose that A7 sg, Fo 三 0.6 Nt, and @ 二 0.2m, Calculate (a) The torque 7 acting on the cylinder (b) Ti ngular aceeleration q of the cylinder 17. [Work and kinet: instant Totat eenergy] A 40-kg homogeneous sphere of radius 10 cm is at acertain about ashaft through its center at 600 rpm. Assuining that a constant fric itude ets so that the sphere comes to rest in 10 seconds, Calculate th tional torque ofthis torque. 18. [The physical pendl end and allowed to oscillate freely in a horizontal plane (see Figure) m] A uniform Tod of Inass ru and length / is suspended at one (a) What is the period of this physic lpendulum for small amplitudes? (b) Ithe velocity u0 of the mass ce Hulum is initially released at rest in a horizontal position。what is the er at a subsequent instant when the Tod is vertical? (ec) Calculate the vertical and the horizontal components of the force on the rod at the point of suspensic 19 and rotations] Analyze the motion of a homogeneous sphere of mass 和7 and Tadius dq, which rolls without slipping down a fixed inclined plane of angle # 20. of angular momentum] A Inan has ainoment of inertia 五 about the = axis. He is originally at Test and standing on asinall platform which can turn freely. Ifhe is handed a wheel which is rotating at and has anoinent of inertia 了about its spinning axis, determine his angular velocity 放 (a) he holds the wheel upright, (b) turns the wheel out 9 二 90?, and (c) turns the wheel downward, 9 二 180?. Neglect the effect of holding the wheel a distance d away from the z axis