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Alex787 [66]
2 years ago
5

In order for an object to accelerate (blank) must be applied.

Physics
2 answers:
LiRa [457]2 years ago
8 0

Answer:

A force must be applied.

With out force there is no movement that causes friction. Gravity is a force but doesn't affect all movement.

yaroslaw [1]2 years ago
4 0

Answer:

a force

Explanation:

a force causes a certain object to move and make a displacement.

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A vessel with an unknown volume is filled with 10 kg of water at 90oC. Inspection of the vessel at equilibrium shows that 8 kg o
damaskus [11]

Hey there!

In this case, it is possible to solve this problem by using the widely-known steam tables which show that at 90 °C, the pressure that produces a vapor-liquid mixture at equilibrium is about 70.183 kPa (Cengel, Thermodynamics 5th edition).

Moreover, for the calculation of the volume, it is necessary to calculate the volume of the vapor-liquid mixture, given the quality (x) it has:

x=\frac{m_{steam}}{m_{total}}

Thus, since 8 kg correspond to liquid water, 2 kg must correspond to steam, so that the quality turns out:

x=\frac{2kg}{10kg} =0.20

Now, at this temperature and pressure, the volume of a saturated vapor is  2.3593 m³/kg whereas that of the saturated liquid is 0.001036 m³/kg and therefore, the volume of the mixture is:

v=0.001036m^3/kg+0.2(2.3593-0.001036 )m^3/kg=0.4727m^3/kg

This means that the volume of the container will be:

V=10kg*0.4727m^3/kg\\\\V=4.73m^3

Regards!

8 0
2 years ago
In the macroscopic world, you know that you can hear but cannot see around corners. Under what conditions does light bend around
omeli [17]

Answer:

a much larger slit, the phenomenon of Sound diffraction that slits for light.

this is a series of equally spaced lines giving a diffraction envelope

Explanation:

The diffraction phenomenon is described by the expression

    d sin θ = m λ

Where d is the distance of the slit, m the order of diffraction that is an integer and λ the wavelength.

 

For train the diffraction phenomenon, the d / Lam ratio is decisive if this relation of the gap separation in much greater than the wavelength does not reduce the diffraction phenomenon but the phenomena of geometric optics.

The wavelength range for visible light is 4 10⁻⁷ m to 7 10⁻⁷ m. The wavelength range for sound is 17 m to 1.7 10⁻² m. Therefore, with a much larger slit, the phenomenon of Sound diffraction that slits for light.

When we add a second slit we have the diffraction of each one separated by the distance between them, when the integrals are made we arrive at the result of the interference phenomenon, a this is a series of equally spaced lines giving a diffraction envelope

When I separate the distance between the two slits a lot, the time comes when we see two individual diffraction patterns

6 0
3 years ago
Find the volume of a box that is 122 cm long, 51 cm wide and 13 cm high.<br> V= ________cm³
DochEvi [55]

Answer:

80,886 cm^3

Explanation:

v= lwh (also known as length × width × height)

v = 122cm × 51cm × 13cm

v = 80,886 cm^3

6 0
3 years ago
Brain surgery. Surgeons can remove brain tumors by using a cavitron ultrasonic surgical aspirator, which produces sound waves of
dmitriy555 [2]

Answer:\lambda =1.304\times 10^4\ m

Explanation:

Given

frequency of wave \nu =23\ kHz

We know velocity is given by

v=\nu \times \lambda

where \lambda=wavelength

\lambda =\frac{velocity}{\nu }

\lambda =\frac{3\times 10^8}{23\times 10^3}

\lambda =1.304\times 10^4\ m

7 0
3 years ago
For human beings, what object is
LenKa [72]
I’m just answering questions
7 0
3 years ago
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