Answer:
16 years.
Explanation:
Using Kepler's third Law.
P2=D^3
P=√d^3
Where P is the orbital period and d is the distance from the sun.
From the question the semi major axis of the asteroid is 4 AU= distance. The distance is always express in astronomical units.
P=?
P= √4^3
P= √256
P= 16 years.
Orbital period is 16 years.
Answer:
42.4m/s
Explanation:
To develop the problem it is necessary to apply the concepts related to thermodynamic work and Bernoulli's principle in which the behavior is described of a liquid moving along a stream.
The work of an incomprehensible liquid is given by the equation,
![\dot{W} = \dot{m}w = -\dot{m}\upsilon (P_e-P_i)](https://tex.z-dn.net/?f=%5Cdot%7BW%7D%20%3D%20%5Cdot%7Bm%7Dw%20%3D%20-%5Cdot%7Bm%7D%5Cupsilon%20%28P_e-P_i%29)
Where,
= Mass flow
= Specific Volumen
P = Pressure
Our values are given by,
= 2kW
![P_i = 150kPa\\P_f = 1000kPa\\P_e = 100kPa](https://tex.z-dn.net/?f=P_i%20%3D%20150kPa%5C%5CP_f%20%3D%201000kPa%5C%5CP_e%20%3D%20100kPa)
Table 1 for saturated water in 10°C
We need to find the mass flow, then re-arrange for ![\dot{m}](https://tex.z-dn.net/?f=%5Cdot%7Bm%7D)
![\dot{m} = \frac{\dot{W}}{-\upsilon(P_f-P_i)}](https://tex.z-dn.net/?f=%5Cdot%7Bm%7D%20%3D%20%5Cfrac%7B%5Cdot%7BW%7D%7D%7B-%5Cupsilon%28P_f-P_i%29%7D)
![\dot{m} = \frac{-2}{-0.001000(1000-150)}](https://tex.z-dn.net/?f=%5Cdot%7Bm%7D%20%3D%20%5Cfrac%7B-2%7D%7B-0.001000%281000-150%29%7D)
![\dot{m} = 2.356kg/s](https://tex.z-dn.net/?f=%5Cdot%7Bm%7D%20%3D%202.356kg%2Fs)
To find the Spray velocity, we apply Bernoulli equation, because at the Nozzle there is not Work or Heat transfer related. Then,
![\frac{1}{2}V^2 = \upsilon \Delta P](https://tex.z-dn.net/?f=%5Cfrac%7B1%7D%7B2%7DV%5E2%20%3D%20%5Cupsilon%20%5CDelta%20P)
![V = \sqrt{2*\upsilon(P_e-P_i)}](https://tex.z-dn.net/?f=V%20%3D%20%5Csqrt%7B2%2A%5Cupsilon%28P_e-P_i%29%7D)
![V = \sqrt{2*0.001003(1000-100)}](https://tex.z-dn.net/?f=V%20%3D%20%5Csqrt%7B2%2A0.001003%281000-100%29%7D)
![V = 42.4m/s](https://tex.z-dn.net/?f=V%20%3D%2042.4m%2Fs)
Therefore the spray velocity is 42.4m/s
Answer: gravity is the top one hope this helps
Explanation:
Answer:
Explanation:
As the elevator starts moving up with an acceleration, so the weight becomes
W - mg = ma
W = m (g + a)
Thus, the weight of the body is greater than the normal weight at rest.