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3 years ago

Tony is now three years older than howard. five years ago the sum of their ages was 59. now, tony is

Mathematics

1 answer:

Natalka [10]3 years ago

8 0

Tony's age now is 36.

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A spinning giant star of initial radius R1 and angular speed ω1 suddenly collapses radially inward reaching a new radius R2 = 0.

tiny-mole [99]

Answer:

K1/K2=4

Step-by-step explanation:

The kinetic energy of a rotating sphere is given by:

$K=\frac{I*\omega^{2} }{2}$

The moment of inertia of a solid sphere is given by

$I=\frac{2MR^{2} }{5}$

The initial kinetic energy is therefore

$K_1=\frac{2MR^{2}*\omega^{2} }{10}$

$K_1=\frac{MR_1^{2}*\omega^{2} }{5}$

The final kinetic energy is given by

$K_2=\frac{MR_2^{2}*\omega^{2} }{5}$

Therefore the relation K1/K2 if R2 = 0.5R1

$\frac{K_1}{K_2} =\frac{5M(R_1)^{2}*\omega^{2} }{5*M(0.5R_1)^{2} \omega^{2}}$

The text says nothing about the final angular velocity just the collapse of the collapse of the radius

$\frac{K_1}{K_2} =\frac{1 }{(0.5)^{2} }=4$

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3 years ago

Lim x -4 sqrt x+20 - sqrt 12-x x^ 2 +3x-4 =

belka [17]

hey jay sorry for the phone number but i did not respond yet but i will text you back when you leave the office

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3 years ago

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Is 4m equal to 400dm

erica [24]

It is not.

400 decimeters = 4,000 cm

4,000 cm = 40 m

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3 years ago

ΔABC will undergo two transformations to give ΔA′B′C′. Which pair of transformations will give a different image of ΔABC if the

Marta_Voda [28]

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3 years ago

Write equations for the vertical and horizontal lines passing through the point (-4,-9).

Gnesinka [82]

Answer:

Below.

Step-by-step explanation:

These are perpendicular line which intersect at (-4, -9).

Vertical line is x = -4.

Horizontal lone is y = -9.

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3 years ago