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Gnesinka [82]
2 years ago
8

If the displacement of a horizontal mass-spring system was doubled, the elastic potential energy in the system would change by a

factor of
Physics
1 answer:
bixtya [17]2 years ago
3 0

Answer:

K'=4K

Explanation:

The electric potential energy is given by :

E=\dfrac{1}{2}kx^2

Where

k is spring constant

x is compression or extension in the spring

If the displacement of a horizontal mass-spring system is doubled, x'= 2x

New elastic potential energy :

E'=\dfrac{1}{2}kx'^2\\\\E'=\dfrac{1}{2}k(2x)^2\\\\=\dfrac{1}{2}k\times 4x^2\\\\K'=4\times \dfrac{1}{2}kx^2\\\\K'=4K

So, new elastic potential energy 4 times the initial elastic potential energy.

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The current theory of the structure of the
Elza [17]

Answer:  91.4 J

Explanation:

Kinetic energy is the energy possessed by a body due to virtue of its motion.

K.E. = 0.5 m v²

Mass of the continent is given, m = 1.819 × 10²¹ kg

Side of the block of continent, s = 4150 km = 4150000 m

Depth of the block of continent, d = 38 km = 38000 m

(Mass = density × volume

m = 2780 kg/m³× (4150 × 10³ m)²× 38 × 10³ m = 1.819 × 10²¹ kg)

The continent is moving at the rate of, v = 1 cm /year = 0.01 m / 31556926 s = 3.17 × 10⁻¹⁰ m/s

⇒ K.E. = 0.5 × 1.819 × 10²¹ kg × (3.17 × 10⁻¹⁰ m/s)²= 91.4 J

Hence, mass of the continent has 91.4 J of kinetic energy.

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3 years ago
The energy due to Earth pulling down on an object is called ___.
Slav-nsk [51]

Gravity is the energy due to Earth pulling down on an object.

6 0
3 years ago
Value of x<br>Guys plz answer <br>and get marked as brainliest :)​
lakkis [162]

Answer:

80⁰

Explanation:

triangle AOB = 180

So, a = 50

triangle CAB = a+a+x=180

CAB = 50+50+X=180

CAB = X = 180-100

X=80

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3 0
3 years ago
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5. What's the temperature -10°C in kelvins? ​
konstantin123 [22]

Answer:

263.15

. . . . . . . . . ..  ... . . . . . .. . . . . . . . ... .

7 0
2 years ago
A particle is projected at an angle 60 degrees to the horizontal with a speed of 20m/s. (i) calculate total time of flight of th
Kisachek [45]

Answer:

Time of flight=3.5 seconds

Speed at maximum height is 0

Explanation:

Φ=60°

initial velocity=u=20m/s

Acceleration due to gravity=g=9.8 m/s^2

Total time of flight=T

Final speed=v

question 1:

T=(2 x u x sinΦ)/g

T=(2 x 20 x sin60)/9.8

T=(2 x 20 x 0.8660)/9.8

T=34.64/9.8

T=3.5 seconds

Question 2

Speed at maximum height is 0

8 0
3 years ago
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