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barxatty [35]
2 years ago
6

The mass of a baseball is 100 grams and the volume is 25 cm cubed. What is the density?

Physics
2 answers:
Talja [164]2 years ago
4 0

Answer:20 g/cm.

Explanation:

love history [14]2 years ago
4 0

Answer:4g/cm3.

Explanation: The Density of a substance or object  is the mass of the substance per unit  volume of the object.

M is mass, =100g

V is volume = 25cm3

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A disk-shaped merry-go-round of radius 2.13 m and mass 175 kg rotates freely with an angular speed of 0.651 rev/s. A 55.4 kg per
GREYUIT [131]

Answer:

Explanation:

To find out the angular velocity of merry-go-round after person jumps on it , we shall apply law of conservation of ANGULAR momentum

I₁ ω₁ + I₂ ω₂ = ( I₁  + I₂ ) ω

I₁ is moment of inertia of disk , I₂ moment of inertia of running person , I is the moment of inertia of disk -man system , ω₁ and ω₂ are angular velocity of disc and man .

I₁ = 1/2 mr²

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= 396.97 kgm²

I₂ = m r²

= 55.4 x 2.13²

= 251.34 mgm²

ω₁ = .651 rev /s

= .651 x 2π rad /s

ω₂ = tangential velocity of man / radius of disc

= 3.51 / 2.13

= 1.65 rad/s

I₁ ω₁ + I₂ ω₂ = ( I₁  + I₂ ) ω

396.97 x  .651 x 2π + 251.34 x 1.65 = ( 396.97 + 251.34 ) ω

ω = 3.14 rad /s

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What scientisists stated that animals, as well as plants, are made of cells.?
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Answer:

D. the masses of the objects and the distance between them

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f = \frac{Gm_{1}m_{2} }{d^{2} }

Where :

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Answer:

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