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Damm [24]
4 years ago
15

You would like to know whether silicon will float in mercury and you know that can determine this based on their densities. Unfo

rtunately, you have the density of mercury in units of kilogram-meter^3 and the density of silicon in other units: 2.33 gram-centimeter^3. You decide to convert the density of silicon into units of kilogram-meter^3 to perform the comparison.
By which combination of conversion factors will you multiply 2.33 gram-centimeter^3 to perform the unit conversion?
Physics
1 answer:
dolphi86 [110]4 years ago
3 0

Answer:

Explanation:

To convert gram / centimeter³ to kg / m³

gram / centimeter³

= 10⁻³ kg / centimeter³

= 10⁻³  / (10⁻²)³ kg / m³

= 10⁻³ / 10⁻⁶ kg / m³

= 10⁻³⁺⁶ kg / m³

= 10³ kg / m³

So we shall have to multiply be 10³ with amount in gm / cm³ to convert it into kg/m³

2.33 gram / cm³

= 2.33 x 10³ kg / m³ .

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A sports car has an average acceleration of 5.81 m/s2. How long does it take for the car to reach 60.0 mi/h, if it starts from r
Aleks04 [339]

Answer:

  4.617 s

Explanation:

The speed of 60 mi/h can be converted to m/s:

  (60 mi/h) × (1609.344 m/mi) × (1 h)/(3600 s) = 26.8244 m/s

The relationship between speed and acceleration is ...

  v = at

  t = v/a = (26.8244 m/s)/(5.81 m/s²) ≈ 4.617 s

It will take the car 4.617 seconds to reach 60 mi/h starting from rest.

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Answer:

The correct answer is a. Subsonic

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Which best describes accuracy?
Ierofanga [76]
The dependence of a measured value on a controlled value should be the correct answer. 
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If you have a projectile and you double its mass, how would this affect its horizontal velocity?
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In recent years, astronomers have found planets orbiting nearby stars that are quite different from planets in our solar system.
BartSMP [9]

Answer:

The value of g in Kepler-12b is 3.85 m/s^{2}

Explanation:

To determine the value of g at Kepler-12b it is necessary to combine the equation of the weight and the equation for the Universal law of gravity:

W = m.g  (1)

Where m is the mass and g is the value of the gravity

F = G \frac{M.m}{R^{2}}  (2)

Equation (1) and equation (2) will be equal, since the weight is a force acting on the object as a consequence of gravity:

m.g = G \frac{M.m}{R^{2}}  (3)

Then g will be isolated from equation 3:

g = G \frac{M.m}{m.R^{2}}

g = \frac{G.M}{R^{2}}  (4)

The radius of Jupiter has a value of 69911000 meters, so its diameter can be determined by:

d = 2R (5)

Where d and R are the diameter and radius of Jupiter

d_{jupiter} = 2(69911000 m)

d_{jupiter} = 139822000 m

Procedure for finding the radius of Kepler-12b:

For the case of Kepler-12b it has a diameter that is 1.7 times that of Jupiter

d_{Kepler-12b} = 1.7(d_{jupiter})

d_{Kepler-12b} = 1.7(139822000 m)

d_{Kepler-12b} = 237697400 m

By means of equation 5 the radius of Kepler-12b can be known:

R_{Kepler-12b} = \frac{d}{2}

R_{Kepler-12b} = \frac{237697400 m}{2}

R_{Kepler-12b} = 118848700 m

Procedure for finding the mass of Kepler-12b:

The mass of Jupiter has a value of 1.898x10^{27} kilograms

For the case of Kepler-12b it has a mass that is 0.43 times that of jupiter

m_{Kepler-12b} = 0.43(m_{jupiter})

m_{Kepler-12b} = 0.43(1.898x10^{27} Kg)

m_{Kepler-12b} = 8.161x10^{26} Kg

The value of g in Kepler-12b can be found by replacing its radius and mass in equation 4:

g = \frac{(6.67x10^{-11} N.m^{2}/Kg^{2})(8.161x10^{26} Kg)}{(118848700 m)^{2}}

g = 3.85 m/s^{2}

Hence, in Kepler-12b the gravity has a value of 3.85 m/s^{2}

8 0
3 years ago
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