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g100num [7]
3 years ago
11

7. If a hot spoon is placed in a glass of cold

Physics
1 answer:
pychu [463]3 years ago
5 0

Answer:

C

Explanation:

Spoon decrease, water increase

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7.
Usimov [2.4K]

Answer:

A

Explanation:

7 0
3 years ago
Read 2 more answers
I don’t understand I need help asap
hammer [34]
For the first question, you got them right, for the two you left blank, initial(beginning) velocity: 2 m/s the final velocity is: 12 m/s
3 0
3 years ago
an object is producing a sound that has a wavelength in air of 2.69m. If the speed of sound in air is 346m/s, what is the freque
Misha Larkins [42]

Answer:

129.74 Hz

Explanation:

Given:

Wave velocity ( v ) = 346 m / sec

wavelength ( λ ) = 2.69 m

We have to calculate Frequency ( f ) :

We know:

v = λ / t [ f = 1 / t ]

v = λ f

= > f = v / λ

Putting values here we get:

= > f = 346 / 2.69 Hz

= > f = 34600 / 269 Hz

= > f = 129.74 Hz

Hence, frequency of sound is 129.74 Hz.

5 0
3 years ago
Ceres is a dwarf planet located in the main asteroid belt.
Pie
Yes that is correct, it <span>lies between the orbits of Mars and Jupiter and is the largest in the belt.

</span>
5 0
3 years ago
Will xenon react with nitrogen and why
Andreyy89
<span>No, xenon wont react with nitrogen.

This is because xenon is a noble gas and noble gases on</span>ly react with other elements under very unusual circumstances.<span>

I hope this has helped you.</span>
3 0
3 years ago
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