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rjkz [21]
3 years ago
9

The rotational inertia of a collapsing spinning star changes to 1/5 its initial value. What is the ratio of the new rotational k

inetic energy to the initial rotational kinetic energy
Physics
1 answer:
Elden [556K]3 years ago
7 0

Answer:

5

Explanation:

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A manufacturer of chocolate chips would like to know whether its bag filling machine works correctly at the 420 gram setting. It
natta225 [31]

Answer:

P-value of the test statistic is 2.499

Explanation:

given data:

size sample is 24

sample mean is 414 gm

standard deviation is 15

Null hypotheis is

H_0: \mu = 420 gm

H_1 \mu< 420

level of significance is 0.01

from test statics

t = \frac{\hat x - \mu}{\frac{s}{\sqrt{n}}}

degree od freedom is  =  n -1

df = 24 -1 = 13

t = \frac{414 - 420}{\frac{15}{\sqrt{24}}}

t = -1.959

from t table critical value of t at 0.1 significane level and 23 degree of freedom  is 2.499

8 0
3 years ago
An ice block measuring 5cm by 5cm by 5cm has a desity of 5g/cm3. What is the mass of the ice block?
Svetradugi [14.3K]


Density = (mass) / (volume)

Volume of your block = (5cm x 5cm x 5cm) = 125 cm³

5 gm/cm³ = (mass) / (125 cm³)

Multiply each side by (125 cm³):  Mass = 625 gm

Note: 
I don't know what kind of frozen substance you're working with,
but maybe you ought to be careful handling it ... I know that's
not water ice you have there.  The density of water ice is not
5 gm/cm³.  In fact, it's a little less than 1 gm/cm³.  That's why
the ice floats in your soda.

4 0
3 years ago
Read 2 more answers
State the relation between acceleration and momentum
vredina [299]

Answer:

Acceleration is the rate of change of velocity. Momentum is the mass times the velocity. So if you multiply the mass times the acceleration, you get the rate of change of momentum

5 0
3 years ago
What is the effect of putting a ferromagnetic material inside the coil of a solenoid?
evablogger [386]
It strengthens the magnetic field.
3 0
3 years ago
Read 2 more answers
The diagram below shows how sunlight is radiated back into the Earth's atmosphere as heat (infrared radiation).
Juliette [100K]

The diagram that shows how sunlight is radiated back into the Earth’s atmosphere as heat(infrared radiation) is of the Greenhouse effect.

The greenhouse effect is a natural phenomenon that occurs on Earth and heats up our atmosphere.

The name of this effect is derived from a greenhouse, which is used to grow crops in a special environment.

A greenhouse is basically a house that is made up of glass. The glass allows heat to enter the house but it does not allow the heat to escape to the outside thus keeping the greenhouse warm.

Some gases that are responsible for this effect are known as greenhouse gases. These gases are carbon dioxide, methane, chloro- fluoro carbons, etc.

These gases trap the heat of the sun and raise the temperature of Earth thus causing global warming.

Thus, the diagram that shows how sunlight is radiated back into the Earth’s atmosphere as heat(infrared radiation) is of the Greenhouse effect.

Read more about Greenhouse effect:

brainly.com/question/13390232

#SPJ1

6 0
1 year ago
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