4 years ago

An element that is unable to create a ion and therefore always has a charge of 0 is most likely a member of a family called

Physics

1 answer:

Allisa [31]4 years ago

7 0

Explanation:

'noble gases' which are also known as group VIII

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A metal smith pours 3.00 kg of lead shot at 99oc into 1.00 kg of water at 25oc in an isolated container. what is the final tempe

cluponka [151]

The answer is in attachment.

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4 years ago

The angle between the incident ray and the surface of a plane mirror is 20'. What is the total angle rotated by the incident ray

Dahasolnce [82]

Angle made by the light ray with the surface of mirror is given as

$\theta_i = 90 - 20 = 70$ degree

now as we know as per law of reflection that

angle of incidence = angle of reflection

So here we can say that

$\theta_i = \theta_r$

$\theta_r = 70 degree$

now the total angle that reflected ray will rotate with respect to incident ray is known as angle of deviation

$\delta =180 - \theta_i - \theta_r$

$\delta = 180 - 70 - 70 = 40 degree$

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4 years ago

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To do that, we would need to know what is "described above".

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3 years ago

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MrMuchimi

Above information helps you bro.

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3 years ago

A quantity of 14.1 cm^3 of water at 8.4°C is placed in a freezer compartment and allowed to freeze to solid ice at -7.2°C. How m

serious [3.7K]

Answer:920.31 J

Explanation:

Given

Volume of water (V) $=14.1 cm^3$

mass(m) $=\rho \times V=1000\times 14.1\times 10^{-6}=14.1 gm$

Temperature $=8.4^{\circ} C$

Final Temperature $=-7.2 ^{\circ}C$

specific heat of water(c) $=4.184 J/g-^{\circ}C$

Therefore heat required to removed is

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$Q=920.31 J$

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4 years ago