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2 years ago

Identify the word being referred to choose your answer from the words below

Physics

1 answer:

SSSSS [86.1K]2 years ago

7 0

Answer:

1:Rotation

2:Axis

3:Aphelion

4:orbit

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The temperature of 2.0 g of helium is increased at constant volume by ΔT. What mass of oxygen can have its temperature increased

gavmur [86]

Answer:

m = 9.6 g

Explanation:

Thermal energy given to helium gas at constant volume is given as

$Q = nC_v \Delta T$

so here we have

$C_v = \frac{3}{2}R$

$n = moles$

$n = \frac{2}{4} = 0.5$

so we have

$Q = \frac{3}{2}R(0.5)\Delta T$

now we know that

for oxygen gas we have

$C_v = \frac{5}{2}R$

for same amount of heat we have

$Q = nC_v \Delta T'$

$\frac{3}{2}R(0.5)\Delta T = \frac{m}{32} (\frac{5R}{2}) \Delta T$

$m = \frac{0.75 \times 32}{2.5}$

$m = 9.6 g$

8 0

2 years ago

The energy of a photon is proportional to its a) amplitude. d) wave number, k-2m/A c) velocity. b) frequency

Scilla [17]

Answer:

Frequency

Explanation:

Photons are the packet of energy. They are massless and chargeless particles. They travel in the vacuum with the speed of light. The energy of photon is given by :

$E=h\nu$

Where

h = Planck's constant

$\nu$ = frequency of photon

Or $E=\dfrac{hc}{\lambda}$

c = speed of light

$\lambda$ = wavelength of photon

From the above equation, it is clear that the energy of photon is directly proportional to its frequency.

5 0

3 years ago

What’s the answer?hhhu

allsm [11]

Which one if you want independent variable meaning that means variable (often denoted by x ) whose variation does not depend on that of another.

7 0

2 years ago

to measure the static friction coefficient between a block and a vertical wall, a spring is attached to the block, is pushed on

Stolb23 [73]

Answer:

μ = mg/kx

Explanation:

Since the bock does not slip, the frictional force equals the weight of the block. So, F = mg. Now, the frictional force, F = μN where μ = coefficient of static friction and N = Normal force.

Now, the normal force equals the spring force F' = kx where k = spring constant and x = compression of spring.

N = F' = kx

So, F = μN = μkx

μkx = mg

So, μ = mg/kx

8 0

2 years ago

Which of the following measurements changes based on the strength of gravity? A.Mass B.Size C.Length D.Weight

kaheart [24]

Weight. As a scientific term Weight is referred to as the force that Earth and objects have with each other. Your weight can be different on other planets.

7 0

3 years ago

Read 2 more answers

Identify the word being referred to choose your answer from the words below​

Identify the word being referred to choose your answer from the words below