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Serggg [28]
3 years ago
7

Why is gravitational force and gravity not the same thing?

Physics
2 answers:
Anettt [7]3 years ago
8 0
One is force other is quantity
vekshin13 years ago
3 0

Answer:

gravitational force is a force while gravity is a fundamental quantity

Explanation:

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Which kind of information is known about a person if that person’s DNA is in a database? A. how old the person is
shepuryov [24]
<span>the kind of information that we could know about a person if that person's DNA is in a database is : C. sme diseases the person might have Some diseases are proven to because by the passed DNA during reproduction process without any external factors. Example of these diseases are : sicle cell anemia and colorblindess</span>
5 0
3 years ago
Read 2 more answers
Using the result of the preceding problem, (a) calculate the distance between fringes for 633-nm light falling on double slits s
vekshin1

To solve this problem it is necessary to apply the concepts related to the concept of superposition and the fringe separation for double slit experiment.

The equation can be written as

\Delta y = \frac{x\lambda}{d}

Where

\Delta y = Distance between fringes

x = distance between slits and screen

d = Distance between slits

\lambda= Wavelength

Our values are given as

d= 0.08mm

x =3m

\lambda = 633nm

In this way replacing in the equation,

\Delta y = \frac{x\lambda}{d}

\Delta y = \frac{3m(633nm*(\frac{1*10^{-9}}{1nm}))}{0.08*(\frac{1*10^{-3}m}{1mm})}

\Delta y = 2.37*10^{-2}m

\Delta y = 2.37cm

Therefore the distance between the fringes is 2.37cm

PART B) For the case in which it is submerged in water it is necessary to apply the relationship of the fringes with the index of refraction therefore

\Delta Y_2 = \frac{\Delta Y_1}{n}

\Delta Y_2 = \frac{2.37}{1.33}

\Delta Y_2 = 1.78cm

3 0
4 years ago
A playground carousel is rotating counterclockwise about its center on frictionless bearings. A person standing still on the gro
Shtirlitz [24]

Answer:

1.94601 rad/s

Explanation:

I_1 = Moment of inertia of carousel = 124 kgm²

\omega_1 = Angular speed of carousel = 3.5 rad/s

\omega_2 = Angular speed of person

r = Radius of carousel = 1.53 m

m = Mass of person = 42.3 kg

Moment of inertia of person

I_2=mr^2\\\Rightarrow I_2=42.3\times 1.53^2\\\Rightarrow I_2=99.02007\ kgm^2

As the angular momentum is conserved in the system

I_1\omega_1=(I_1+I_2)\omega_2\\\Rightarrow \omega=\frac{I_1\omega_1}{(I_1+I_2)}\\\Rightarrow \omega_2=\frac{124\times 3.5}{(124+99.02007)}\\\Rightarrow \omega_2=1.94601\ rad/s

The angular speed of the carousel after the person climbs aboard is 1.94601 rad/s

5 0
3 years ago
A 5kg box rests on a table. a 3 kg box rests on top of the 5 kg box. what is the normal force from the table?
Murrr4er [49]

==>  The total mass resting on the table is (5 kg + 3 kg) = 8 kg.

==>  The total weight of that mass is (8 kg) x (9.8 m/s) = 78.4 newtons

==>  The boxes are stacked.  So the table doesn't know if the weight on it is coming from one box, 2 boxes, 3 boxes, or 100 boxes in a stack.  The table only knows that there is a downward force of 78.4 newtons on it.

==>  The table stands in a Physics classroom, and it soaks up everything it hears there.  It knows that every action produces an equal and opposite reaction, and that forces always occur in pairs.  

Ever since the day it was only a pile of lumber out behind the hardware store in the rain, the table has known that in order to maintain the good  reputation of tables all over the world, it must resist the weight of anything placed upon it with an identical upward force.  This is the normal thing for all good tables to do, up to the ultimate structural limit of their materials and construction, and it is known as the "normal force".

So the table in your question provides a normal force of 78.4 newtons. (d)

7 0
3 years ago
A microwave oven operates at 2.50 GHzGHz . What is the wavelength of the radiation produced by this appliance? Express the wavel
sattari [20]

Answer:

The wavelength is \lambda  =  1.2  * 10^8 nm

Explanation:

From the question we are told that

   The frequency of operation of the microwave is  f =  2.50 GHz  =  2.50 *10^{9} \ Hz

     Generally the wavelength is mathematically represented as

          \lambda  =  \frac{c}{f}

Here c is the speed of light with value c =  3.0 *10^{8} \  m/s

So  

         \lambda  =  \frac{3.0 *10^{8}}{  2.50 *10^{9}}

=>       \lambda  =  0.12 \  m

converting to nanometer

           \lambda  =  1.2  * 10^8 nm

6 0
4 years ago
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