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nasty-shy [4]
3 years ago
12

Can You Explain?

Physics
1 answer:
alina1380 [7]3 years ago
3 0

Answer:

Explanation:

The radial velocity method involves watching the spectral lines of a star as a planet orbits the star. Because of the planets gravitational pull on the star, the star will wobble. This causes Doppler shifts in the spectral lines, allowing astronomers to infer the presence of the planets.

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The masses are m1 = m, with initial velocity 2v0, and m2 = 7.4m, with initial velocity v0. Due to the collision, they stick toge
lesya [120]

Answer:

Loss, \Delta E=-10.63\ J

Explanation:

Given that,

Mass of particle 1, m_1=m =0.66\ kg

Mass of particle 2, m_2=7.4m =4.884\ kg

Speed of particle 1, v_1=2v_o=2\times 6=12\ m/s

Speed of particle 2, v_2=v_o=6\ m/s

To find,

The magnitude of the loss in kinetic energy after the collision.

Solve,

Two particles stick together in case of inelastic collision. Due to this, some of the kinetic energy gets lost.

Applying the conservation of momentum to find the speed of two particles after the collision.

m_1v_1+m_2v_2=(m_1+m_2)V

V=\dfrac{m_1v_1+m_2v_2}{(m_1+m_2)}

V=\dfrac{0.66\times 12+4.884\times 6}{(0.66+4.884)}

V = 6.71 m/s

Initial kinetic energy before the collision,

K_i=\dfrac{1}{2}(m_1v_1^2+m_2v_2^2)

K_i=\dfrac{1}{2}(0.66\times 12^2+4.884\times 6^2)

K_i=135.43\ J

Final kinetic energy after the collision,

K_f=\dfrac{1}{2}(m_1+m_2)V^2

K_f=\dfrac{1}{2}(0.66+4.884)\times 6.71^2

K_f=124.80\ J

Lost in kinetic energy,

\Delta K=K_f-K_i

\Delta K=124.80-135.43

\Delta E=-10.63\ J

Therefore, the magnitude of the loss in kinetic energy after the collision is 10.63 Joules.

7 0
3 years ago
Kiley went 5.7 km/h north and went 5.8km/h west. From start to finish,she went 8.1 km/h northwest which best describes her numbe
ladessa [460]
These values are all vectors since they all possess both magnitude and direction.
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The picture shows three sets of balloons, all with a particular charge. Which of the picture(s) is true? Please explain.
devlian [24]
<span>Letter C has the correct illustration. Two objects with the same charge (in this case, both are positively charged) will repel each other. </span>  

Letter A is incorrect because a positive charged object will attract a negatively charged object.  

Letter B is incorrect because both of them are negatively charged, which means they should be repelling each other.
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3 years ago
HELPHELPHELPHELPHELPPLZZZZZ What is the name for the type of graph shown in the image below? A graph that shows quantities of it
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Answer:a graph

Explanation:because it graphs

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3 years ago
Which forces include attractive and repulsive interactions? A. electric and magnetic forces B. static friction and air resistanc
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The answer is : A



i hoped this helped and have a wonderful day!!


:)
3 0
3 years ago
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