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Dmitry_Shevchenko [17]
3 years ago
15

Suppose you are conducting an experiment concerning gravity's effects on falling objects, and you want to minimize air resistanc

e.
Which of these would be the MOST useful and practical way to do this?
A)
Use larger objects.
B)
Use extremely dense objects.
O
Conduct the experiment in a vacuum.
D)
Conduct the experiment at various altitudes.
Physics
1 answer:
Vladimir79 [104]3 years ago
7 0
Answer: C) Conduct the experiment in a vacuum.
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In which position are the earth, moon, and sun during a full moon?
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The answer is B, although technically that is an eclipse.

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Question 3
zalisa [80]

Answer:

V2 = 37.5 L

Explanation:

Given the following data;

Initial volume, V1 = 25 L

Initial temperature, T1 = 20°C

Final temperature,T2 = 30°C

To find the final volume V2, we would use Charles' law;

Charles states that when the pressure of an ideal gas is kept constant, the volume of the gas is directly proportional to the absolute temperature of the gas.

Mathematically, Charles is given by;

\frac {V}{T} = K

\frac{V_{1}}{T_{1}}  = \frac{V_{2}}{T_{2}}

Making V2 as the subject formula, we have;

V_{2}= \frac{V_{1}}{T_{1}} * T_{2}

V_{2}= \frac{25}{20} * 30

V_{2}= 1.25 * 30

V2 = 37.5 L

3 0
2 years ago
A 1 mg ball carrying a charge of 2 x 10-8 C hangs from a
Colt1911 [192]

Answer:

σ = 0.255*10^-3 C/m²

Explanation:

The Electric field Intensity act due to plate = σ/ε₀, where σ is surface charge density of plate.

At equilibrium ,

Upward force = downward force

Tcosθ = mg ----(1)

Assuming that the Forward force = backward force, then

Tsinθ = σq/ε₀

[ ∵ F = qE , ∴ F = qσ/ε₀ ] -----(2)

Dividing equation (2) by (1)

Tsinθ/Tcosθ = qσ/ε₀mg

⇒Tanθ = qσ/ε₀mg

σ = ε₀mg tanθ/q

Now substituting the values of

σ = (8.85*10^-12 * 1 * tan 30) / 2*10^-8

σ = (8.85*10^-12 * 0.5774) / 2*10^-8

σ = 5.11*10^-12 / 2*10^-8

σ = 0.255*10^-3 C/m²

8 0
3 years ago
Mitzy has a temperature of 109 degrees celsius. How much more is this from her normal body temperature? ​
nasty-shy [4]
The average human body temperature is around 37 degrees Celsius.
So, this is 72 degrees away from the normal body temp.
4 0
2 years ago
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