英語ですみません🙇‍♂️この問題からcとdってどうやって求めたらいいんですか？説明お願いします🙇‍♂️ c) 3.81x10^3 d) 43.6%

Science 10AP 2020 Use the following information to answer the next question. 18. A student exerts a force of 130 N on a wagon that has a mass of 20.0 kg to moveitata constant speed up a hil. The wagon travels 43.0 m along the slope before arriving at the top of the hill. The net vertical gain in height of the wagon is 15.0 m, as shown in the diagram below. 45.0 m 15.0 m SN 150 N= Force Y 196 N (20.0 kg) a. What is the work input by the student? b. What is the change in energy in gravitational energy of the wagon? c. What is the useful work done by the studen(? d. What js the efficiency of this energy transfer?

量子力学モデル(quantum mechanical model) とは何か簡単に概要だけでも教えてもらえませんか？ 高校何年生でやるのかだけでも構わないので教えてください🙇‍♂️

The Bohring World of Niels Bohr In 1913WBohr proposed that electrons are arranged in concentric circular paths or orbits around the nucleus. Bohr answered in a novel way why electrons which are attracted to protons, never crash into the nucleus. He proposed that electrons in a particular path have a fixed energy. Thus they do not lose energy and crash into the nucleus. 7カje energy /eve/ of g/) e/ecro7 5 太e 7eg/O7 g7Ounの のe 70C7eus Were た5がeルfo pe. These energy levels are like rungs on a ladder, lower levels have less energy and work. The opposite is also true if an electron loses energy it falls to a lower level. Also an electron can only be found rungs of a ladder. The amount of energy gained or lost by every electron is not always the same. Unlike the rungs of a ladder, the energy levels are not evenly spaced. 4 gug/fg77 O7 ene79y 75 妨e 977Ou7た Oげ ener9y ee0eg ro 77oVe 7 e/ecfron廊O77 745 prese7t _ene/rgy 7eve/ 7O je exf jgカer oe or to make a quantum leap- The Quantum Mechanical Model Like the Bohr model, the ggg74777 776c7g77Co/ 777Oe/ leads to gugn67ze9 energy levels for an electron. However the Quantum Mechanical model does not define the exact path an electron takes around the nucleus. It is concerned with the likelihood of finding an electron in a certain position. This probability can be portrayed as a (oto sale) o @ ら oプ @ Figure 3A Classical Alomic Schematic of Carbon 党 Figure 3B New Atomic Schematic of Carbon 1 nucleus while Gtrostatc equivalents keep Envelopes separale Figure 3C New Atomic Schematic of Oxygen (Electron Envelope above page not shown) blurry cloud of negative charge (electron cloud). The cloud is most dense where the electron is likely to 人M be. ーーーーーー" 午

走っている電車の中から逆向きに走る電車を見るとそちらの方が速く走っているように見えるそうですが 何故でしょう

誰かこの問題お願いします！🙇‍♀️

. Answer the following questions. How many days old will you be on your 16* birthday? (ignore leap years)。 56 の 2】 How many heartbeats are there in the lifetime ofan average person? (The average person's heartbeat is 70 per minute and average lifespan is 70 years). The molar mass of water is 18 gmo!. How many molecules of water are there in a glass of water (mass of water 300 g)? (1 mole = 6.022 x 1073 molecules) What is the volume in cubic meters ofa cube of side 2.8 cm? How long does it take for light to travel across the diameter of the solar system? (Diameter of the solar system is 287.46 billion km).

(3)が分かりません

芝| カ学的エネルギー保存則 ばね定数 を[N/m] のばねの上端を固定し, 下端に 質量 放[kg) のおもりを取りつけると, ばねは伸びて おもりは静止した。この点を A とする。この後, ば ねが自然の長さになる所までおもりを持ち上げ, 静 かにはなした。 重力加速度の大きさを 9【m/s條とし, . -キ ばねは鉛直方向にのみ運動するとする。 G) 衣Aでのばちの特び[m)を求めよ。 (止3。 てい29 (②) おもりが点 Aを通過するときの速さ ヵ[m/s] を 娘, の, をで表せ。 (⑬) おもりが最下点に達するときのばねの伸び *[m]をので表せ。

線を引いたところは右向きに、左向きにとはどうゆうことでしょうか?誰か教えてください

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この英文のどこの部分が間違っているのか教えてください。

上団 次の文の誤りを訂正して. 全文を書きなさい。 (1) When have you finished your report? (2) How long have you been belonging to the tenni (3) Tf you don't hurry the concert has started before you reach. the hall.

How

(3 car is being driven at 20m/s when the driver sees a child run into the road. The drivers usual reaction time is 0.70s, but this is doubled because the driver is tired. Once the driver applies the brakesthe car is brought uniformly to rest in a further 3.3s. What is the total distance travelled by the car between when the driver first sees the child to when th car StopS?. A 33m B 40m 40 mnら 039く *して うりの

Explain please

⑯) Te Hagrmm shows the oniy four forees actng on a model airraf ormass 2.0kg whili fying. lfomwings 25N air resistance force from ーートーでコーウー ょeeen weight 20N Which line in the table states the horizontal and vertical accelerations of the aircraft at this Verdca/ accelera(o0 2.5m/supwards 10m/s?downmwards 10m/s?downwards

物理の楽しさについて教えてください！！心に響くような！