4 years ago

The diagram represents Earth's orbit around the Sun. Where is the Sun located in this ellipse?

Physics

1 answer:

padilas [110]4 years ago

8 0

D) at one of the two focus of that ellipse.

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NikAS [45]

D, Metamorphism
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3 years ago

A 0.42 kg shuffleboard disk is initially at rest when a player uses a cue to increase its speed to 4.2 m/s at constant accelerat

MariettaO [177]

Answer

given,

mass of the shuffleboard disk = 0.42 kg

speed of the cue is increased to = 4.2 m/s

acceleration takes over 2 m then acceleration is zero.

the disk additionally slide to 12 m

final speed of disk = 0 m/s

a) increase in thermal energy

$\Delta E_t = \dfrac{1}{2}m(v_1^2-v_2^2)$

$\Delta E_t = \dfrac{1}{2}\times 0.42 \times (4.2^2-v_2^2)$

$\Delta E_t = 3.704\ J$

b) $\Delta E_t = F_f.d$

F_f is the frictional force

$3.704= 12.F$

$F_f = 0.308\ N$

increase in thermal energy for entire movement of 14 m

$\Delta E_t = 0.308\times 14$

$\Delta E_t =4.312 \ J$

c) Work done on the disk by the cue

$W = \Delta KE + \Delta E_{t}$

$W = \dfrac{1}{2}\times 0.42 \times (4.2^2-0^2)+ F_f \times d$

$W = 3.704+ 0.308 \times 2$

W = 3.704 + 0.616

W = 4.32 J

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4 years ago

Please I need help in this now

Anna71 [15]

Answer:

Explanation:

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3 years ago

Sphere A has an excess of 10 ^ 15 electrons and sphere B has an excess of 10 ^ 13 protons. They are separated by 2.0 m. What is

klasskru [66]

The answer is B
I used these equations then i putted it together.
Charge = number of ( electron or proton ) x charge of ( electron or proton )
Force = k x (q1 q2)/r²

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3 years ago

How to find final kinetic energy given height, mass, distance, and velocity.

Orlov [11]

Answer:

KE = 1/2(m)(v^2)

Explanation:

You only need mass and velocity to find kinetic energy

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3 years ago