Śmigłowiec o masie 11t w czasie 5s wzniósł się pionowo na wysokość 25m. Jeżeli leciał ruchem jednost.... Question from @zac56

October 2018 1 247 Report

Śmigłowiec o masie 11t w czasie 5s wzniósł się pionowo na wysokość 25m. Jeżeli leciał ruchem jednostajnie przyspieszonym, to jego silniki wykonały pracę ...?

Marco12

m = 11t = 11 000kg

t = 5s

h = 25m

s = at²/2

a = 2s/t²

a = 2 x 25m/(5s)² = 2m/s²

W = mgh + mga

W = mh(g+a)

W = 11 000kg x 10N/kg(10m/s² + 2m/s²) = 110 000N x 12m/s³ = 1320000J = 1,32MJ

----------------------------------------------------------------------------------------------------

Litterarum radices amarae sunt, fructus iucundiores

Pozdrawiam :)

2 votes Thanks 1

Pilne na jutro!!!Studiujesz za granicą. wieczorami przez kilka godzin pracujesz w recepcji hotelu. Jutro nie możesz udac się do pracy z ważnego powodu i prosisz koleżanką, która pracuje w tym samym hotelu jako pokojówka, żeby zastąpiła Cię w pracy. Poniżej podane sa 4 kwestie, które musisz omówic:- godziny pracy - obowiązki - możliwe problemy - rekompensata za pomoc

Answer

zac56 November 2018 | 0 Replies

Opowiedz po ang.:What was your last visit to the zoo like?

Answer

zac56 November 2018 | 0 Replies

odpowiedz po angielsku w kilku zdaniach: 1. What present would you like to get for your birthday?2. Do you like helping other people? Why/Why not?3. Is going to the circus a good idea or not? Why do you think so?4. What was the most unbelievable adventure you have ever had?

Answer

zac56 November 2018 | 0 Replies

Na dzisiaj!!! Odpowiedz po angielsku: w kilku zdaniach1. What can be done to reduce teenager's problems at school?2. How can choosing the right school affect your future?

Answer

zac56 November 2018 | 0 Replies

odpowiedz po angielsku na pytania:1. Which qualities do you admire and which one do you dislike in other people?2. What difficulties may come up when you share a flat with another person?

Answer

zac56 October 2018 | 0 Replies

Podaj negatywne skutki melioracji

Answer

zac56 October 2018 | 0 Replies

Odpowiedz po angielsku w kilku zdaniach:1. What kinds of gifts are sutable for teenagers? Why?2. Should parents buy their children very expensive gifts? Why?/Why not?3. What are pros and cons of buying gifts on the net?4. Is it a good idea to ask people what kind o presents they would like to get? Why?/why not?

Answer

zac56 October 2018 | 0 Replies

PILNE!! Na dzisiaj!1. When do you get angry with your parents?2. What was the worst argument you've ever had with your family or friend??odpowiedz w kilku zdaniach po angielsku

Answer

zac56 October 2018 | 0 Replies

wykaż że jeśli a² + b² + c² = ab + ac + bc , to a=b=c

Answer

zac56 October 2018 | 0 Replies

Odpowiedz po angielsku w kilku zdaniach1. What is a successful career in your opinion?2. What do you think should be taken into consideration when choosing a job?

Answer

Opowiedz po ang.:What was your last visit to the zoo like?

odpowiedz po angielsku w kilku zdaniach: 1. What present would you like to get for your birthday?2. Do you like helping other people? Why/Why not?3. Is going to the circus a good idea or not? Why do you think so?4. What was the most unbelievable adventure you have ever had?

Na dzisiaj!!! Odpowiedz po angielsku: w kilku zdaniach1. What can be done to reduce teenager's problems at school?2. How can choosing the right school affect your future?

odpowiedz po angielsku na pytania:1. Which qualities do you admire and which one do you dislike in other people?2. What difficulties may come up when you share a flat with another person?

Podaj negatywne skutki melioracji

PILNE!! Na dzisiaj!1. When do you get angry with your parents?2. What was the worst argument you've ever had with your family or friend??odpowiedz w kilku zdaniach po angielsku

wykaż że jeśli a² + b² + c² = ab + ac + bc , to a=b=c

Odpowiedz po angielsku w kilku zdaniach1. What is a successful career in your opinion?2. What do you think should be taken into consideration when choosing a job?

Recommend Questions

Life Enjoy

Get in touch

Social