Answer:
Explanation:
Given
length of ladder L=15 feet
velocity with which top is falling is 6 m/min
when bottom of ladder is at a distance of 12 ft away from wall then top of ladder from bottom is given by
From diagram
differentiating
<u>Complete Question:</u>
Which words or phrases describe the outer planets? Check all that apply.
1. rocky
2. gaseous
3. few moons
4. low density
5. slow rotation
<u>Answer:</u>
The outer planets of our Solar System are primarily composed of gases, dust, being bigger in size but have lower density as compared to the inner planets.
<u>Explanation:</u>
According to the observation and data received by the the astronomical entities worldwide, it's concluded that the outer planets of our Solar System; Jupitor, Satern, Uranus and Neptune.
These planets are also termed as Jovian planets or Gas Giants as they are primarily made of gases and dust. However, their inner core is made of solid heavy metals. Jupitor is the largest among all of them, having 63 so far identified moons. Its atmosphere is stormy.
Talking about the density, since these planets are made of dust particles and gases, they are of lower density. Uranus has the smallest mass inspite of being the bigger planets of the Solar System. This is because these planets have nothing or nearly nothing solid.
Answer:
a) La aceleración angular es:
b) El engranaje gira 125 radianes.
c) El engranaje hara aproximadamente 20 revoluciones.
Explanation:
a)
La aceleración angular se define como:
Donde:
- Δω es la diferencia de velocidad angular (en otras palabras ω(final)-ω(inicial))
- Δt es el tiempo en el que occure el cambio de velocidad angular
b)
El desplazamiento angular puede ser calculado usando la siguiente ecuación:
Aqui el angulo inicial es 0, por lo tanto.
El engranaje gira 125 radianes.
c)
Lo que debemos hacer aquí es convertir radianes a revoluciones.
Recordemos que 2π rad = 1 rev
Entonces:
Por lo tanto el engranaje hara aproximadamente 20 revoluciones.
Espero te haya sido de ayuda!