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MA_775_DIABLO [31]
3 years ago
11

Two objects move toward each other because of gravitational attraction. As the objects get closer and closer, the force between

them _____. A. remains constant B. decreases C. increases
Physics
2 answers:
bearhunter [10]3 years ago
5 0
<span>Two objects move toward each other because of gravitational attraction. As the objects get closer and closer, the force between them increases. </span>
never [62]3 years ago
5 0

Answer:

C. increases

Explanation:

Law of Universal Gravitation

This law establishes that bodies, by simply having mass, experience a force of attraction to other bodies with mass, called gravitational force or gravitational force.

The gravitational force between two bodies is directly proportional to the product of their masses and inversely proportional to the square of the distance that separates them.

F_{g} =G(\frac{M*m}{r^{2} } ) Formula (1)

where:

G is the universal gravitation constant, G = 6.67 · 10-11 N · m² / kg²

M and m are the masses of the bodies that interact  (kg)

r is the distance that separates them. (m)

Problem development

As objects get closer and closer the distance (r) that separates them decreases and because M, m and G remain constant, in formula (1):

F_{g} =G(\frac{M*m}{r^{2} } )

, if r decreases then Fg increases.

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STatiana [176]

Answer:

\alpha =-38.22\ rad/s^2

Explanation:

given,

ω(t) = 2.00 rad/s- 2.1.00 rad/s³ t²

angular acceleration of the blade  at t= 9.10 s

\alpha =\dfrac{d\omega}{dt}

\alpha =\dfrac{d}{dt}(2 - 2.1 t^2)

\alpha =-2 \times 2.1 t

\alpha =-4.2 t

angular acceleration of blade at t = 9.10

\alpha =-4.2\times 9.10

\alpha =-38.22\ rad/s^2

4 0
3 years ago
Which types of energy is thermal energy a form of
saw5 [17]
Renewable energy or a energy that can be used again
8 0
3 years ago
Read 2 more answers
If you walk 1.4 km north and then 4.8 km east, what are the magnitude and direction of your resultant displacement?
olchik [2.2K]

A


North and east are perpendicular directions hence we can use them as the basis of our coordinate system. The coordinates of this point can then simply be represented as

P = 1.4 N + 4.8 E (km)

The magnitude can be given by the right triangle formula :

P = \sqrt{N^2 + E^2}

= 5 km

Direction  = atan(N/E) = 16.3  deg north of east = 73.7 deg east of north


8 0
3 years ago
The system consists of a 20-lb disk A, 4-lb slender rod BC, and a 1-lb smooth collar C. If the disk rolls without slipping, dete
dlinn [17]

Answer:

The velocity of the collar will be 3.076 ft/s

Explanation:

Given data

weight of the disk, Wa = 20lb

weight of rod BC, Wbc = 4lb

weight of collar, Wc = 1lb

Considering the equation of equilibrium

Vb = 1.5Wbc

Wa = 1.875 Wbc

to calculate the velocity of the collar using energy conservation equation

T1 + V1 = T2 + V2

0+4(1.5 \sin 45)+2(3 \sin 45)=\frac{1}{2}\left(\frac{1}{2}\left(\frac{20}{32.2}\right)(0.8)\right)              

=>(1.875 W b c)+\frac{1}{2}\left(\frac{20}{32.2}\right)(1.5 W b c)+\frac{1}{2}\left(\frac{20}{32.2}\right)

=>(1.5 W b c) \frac{1}{2}\left\{\frac{1}{12}\left(\frac{4}{32.2}\right)(3)\right\}+\frac{1}{2}\left(\frac{1}{32.2}\right)

=>(2.598 W b c)+4(1.5 \sin 0)+2(3 \sin 0)

Wbc = 1.18rad/sec

i.e.                                    

V _c=2.598 \times 1.18

= 3.076 ft/ s

5 0
3 years ago
The acceleration of gravity on earth is approximately 10 m/s2 (more precisely, 9.8 m/s2. if you drop a rock from a tall building
VLD [36.1K]
From the equation;
a= -1÷2gT2
a= -5×3(3)
a= -45m/s
it will drop about -45m/s2.
8 0
3 years ago
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