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V125BC [204]
3 years ago
13

A huge cloud of dust and gas called the _____ collapsed to form our solar system.

Physics
2 answers:
GREYUIT [131]3 years ago
5 0
Ohhh THAT huge cloud of dust and gas !
That's the one we call the 'solar nebula'.
natima [27]3 years ago
4 0
The answer is solar nebula.
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Are defined as subatomic particles that have more mass than neutrinos but do not interact with light.
stepladder [879]
Electrons are the right subatomic particle
4 0
3 years ago
*<br> What is 72 km/hr in m/s?<br> Your<br> answer<br> This is a required question
disa [49]

Answer:

20 meters per second

Explanation:

3 0
3 years ago
Una mujer de masa m está parada en el borde de una mesa giratoria horizontal de momento de inercia I y radio R. La mesa al princ
Dovator [93]

r

- \frac{mR^2 }{I  } \ vAnswer:

a)      w = - \frac{m r }{I} v  ,  b)   W = - ½ m_woman R² (1 + m_woman R / I²) v²

Explanation:

a) To solve this exercise, let's use the conservation of angular momentum.

We define a system formed by the table and the woman, therefore the torques are internal and the moment is conserved

initial instant. Before starting to move the woman

         L₀ = 0

final instant. After starting to move

         L_f = I w + m v r

the moment is preserved

        L₀ = L_f

         0 = Iw + m v r

         w = - \frac{m r }{I} v                    (1)

the direction of the angular velocity is opposite to the direction of the linear velocity, that is, counterclockwise

b) for this part we use the relationship between work and kinetic energy

        W = ΔK

in this case the initial speed is zero and the final speed of the table, using the relationship between linear and angular variables

         v = w r

we substitute

          W = 0 - ½ I_total w²

          I_total = I + m_{woman} R²

          W = - ½ (I + m_woman R²)  ( \frac{m_{woman} R}{I} \ v) ²

          W = - ½ (m_woman² R² + m_woman³ R³ / I²) v²

          W = - ½ m_woman R² (1 + m_woman R / I²) v²

3 0
3 years ago
All atoms of the element potassium have 19 protons. One of the most stable types of potassium atoms has the mass number 39. How
ozzi
The formular for determinatio of mass number is this:
Mass number = number of proton + number of neutron
From the question, we are told that:
Mass number = 39
Proton number = 19
Number of proton = ?
Number of neutron = mass number -  number of proton
Number of neutron= 39 - 19 = 20
Therefore, number of neurtron = 20. 
3 0
3 years ago
Read 2 more answers
A machine does 1000 J of work in 3.5 minutes (210 seconds). What is
irina [24]

Answer: 4.76 watts

Explanation:

Work = 1000 J

Time = 3.5 minutes (210 seconds)

Since the SI unit of time is seconds, 210 seconds will be used in calculation.

Power output of the machine = ?

Recall that power is the rate of doing work. Thus, power is Workdone divided by time taken.

i.e Power = (work/time)

Power = 1000J/210seconds

Power = 4.76 watts

Thus, the power output of the machine is 4.76 watts

4 0
2 years ago
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