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Bad White [126]
3 years ago
5

Science is the process of pursuing knowledge?

Physics
2 answers:
yuradex [85]3 years ago
5 0
Science is the process of pursuing knowledge because we would understand or know about weather processing and earth and are planets.
tatyana61 [14]3 years ago
4 0

yes science is the process of pursuing knowledge this is because without science we would not know about our brains and our brains help us peruse knowledge

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How does a heat pump resemble a refrigeration system?
REY [17]
A heat pump is a device that is capable of transferring heat energy from a source of heat to what is known as the heat sink. It also moves thermal energy in the opposite direction of a spontaneous heat transfer through heat absorption from a cold space and releasing it to a warmer space.

When a heat pump is being utilized for heating, it employs the same principle with that of the refrigeration cycle used by an air conditioner or a refrigerator, but in the opposite direction since it releases heat into a conditioned space rather than the surrounding environment. Moreover, heat pump resembles much as refrigeration since it has the same components with the latter except for the presence of a reverse valve.
3 0
3 years ago
A ball of radius r rolls on the inside of a track of radius R. If the ball starts from rest at the vertical edge of the track, f
meriva

Answer:

v=\sqrt{\dfrac{10g(R-r)}{7}}

Explanation:

Given that

Radius of track = R

Radius of ball = r

The ball can be treated as solid sphere, so

The moment of inertia of ball

I=\dfrac{2}{5}mr^2

When the ball reach at the lowest position then it will have both angular and linear speed.

Condition for  rolling without slipping       v= ωr

Form energy conservation

mgR=mgr+\dfrac{1}{2}mv^2+\dfrac{1}{2}I\omega^2

 v= ωr

I=\dfrac{2}{5}mr^2

mgR=mgr+\dfrac{1}{2}mv^2+\dfrac{1}{2}\times \dfrac{2}{5}mr^2\omega^2

mg(R-r)=\dfrac{1}{2}mv^2+\dfrac{1}{2}\times \dfrac{2}{5}mv^2

2mg(R-r)=mv^2+\dfrac{2}{5}mv^2

2g(R-r)=\dfrac{7}{5}v^2

v=\sqrt{\dfrac{10g(R-r)}{7}}

3 0
3 years ago
Which weathering process is mechanical
andrey2020 [161]

Mechanical weathering is the physical breakdown of rock by environmental factors. This process is always at work, and there are a number of different types of mechanical weathering. Thermal expansion is the tendency for minerals to expand and contract based on temperature.

6 0
3 years ago
Read 2 more answers
The speed of light is about 3.00 × 10 meters per second. What is the frequency of green light that has a wavelength about 500 na
RideAnS [48]

Answer:

The frequency of the green light is 6x10^{14}Hz

Explanation:

The visible region is part of the electromagnetic spectrum, any radiation of that electromagnetic spectrum has a speed of 3.00x10^{8}m/s in the vacuum.

Green light is part of the visible region. Therefore, the frequency can be determined by the following equation:

c = \lambda \cdot \nu  (1)

Where c is the speed of light, \lambda is the wavelength and \nu is the frequency.  

Notice that since it is electromagnetic radiation, equation 1 can be used. Remember that light propagates in the form of an electromagnetic wave (that is a magnetic field perpendicular to an electric field).

Then, \nu can be isolated from equation 1

\nu = \frac{c}{\lambda}  (2)

Notice that it is necessary to express the wavelength in units of meters.  

\lambda = 500nm . \frac{1m}{1x10^{9}nm} ⇒ 5x10^{-7}m

\nu = \frac{3.00x10^{8}m/s}{5x10^{-7}m}

\nu = 6x10^{14}s^{-1}  

\nu = 6x10^{14}Hz  

Hence, the frequency of the green light is 6x10^{14}Hz

4 0
3 years ago
A tennis ball is hit into the air with a racket. When is the ball’s kinetic energy the greatest? Ignore air resistance.
Lady bird [3.3K]

Answer B is the correct answer

We know that kinetic energy  E = \frac{1}{2} mv^2, where m is the mass of object and v is the velocity of object.

In this case only velocity is the variable, mass remains constant.

So point having higher velocity has higher kinetic energy.

When it leaves the racket, the ball will be having a certain height, but just before it reaches the ground it will not having any height. So maximum velocity of ball is at that time when  it reaches just above the ground.

So  option B is the correct answer.

4 0
3 years ago
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