2 years ago

Newton's 3rd law is also known as the law of

Physics

1 answer:

Molodets [167]2 years ago

7 0

Explanation:

<h3>Newton's 3rd law is also known as</h3>

<h3> • The law of action and reaction</h3>

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The radius of curvature of a spherical mirror is 20cm.What is its focal length?

hichkok12 [17]

Answer:

$\boxed{\sf Focal \ length = 10 \ cm}$

Given:

Radius of curvature (R) of a spherical mirror = 20

To Find:

Focal length (f)

Explanation:

Formula:

$\boxed{ \bold{\sf Focal \ length \ (f) = \frac{Radius \ of \ curvature \ (R)}{2}}}$

Substituting value of R in the equation:

$\sf \implies f = \frac{20}{2}$

$\sf \implies f = \frac{ \cancel{2} \times 10}{ \cancel{2}}$

$\sf \implies f = 10 \: cm$

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State the meaning of specific heat capacity of copper is 380 J/kg°C.

Arisa [49]

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Specific heat capacity means that in order to raise copper by 1C per kg, it needs 380J of heat energy.

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2 years ago

A technician attaches one lead of a digital voltmeter to the ground terminal of the TP sensor and the other meter lead to the ne

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Answer:

Neither A or B

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sensor ground circuit does not has excessive resistance.

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3 years ago

Which of the following are known to exist on the moon? select all that apply.

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B. ice and d basalt............

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14. A rocket is shot up into the air and then comes back down and hits the ground 9.2 second later.

sineoko [7]

Answer:

105.8 m

46 m/s

Explanation:

From the time the rocket is launched to the time it reaches its maximum height:

v = 0 m/s

a = -10 m/s²

t = 9.2 s / 2 = 4.6 s

Find: Δy and v₀

Δy = vt − ½ at²

Δy = (0 m/s) (4.6 s) − ½ (-10 m/s²) (4.6 s)²

Δy = 105.8 m

v = at + v₀

0 m/s = (-10 m/s²) (4.6 s) + v₀

v₀ = 46 m/s

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