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3 years ago

HELP When the forces are applied in the same direction, how do you determine net force?

Physics

1 answer:

aleksklad [387]3 years ago

5 0

Answer:

Explanation:

If two forces act on an object in the same direction, the net force is equal to the sum of the two forces.

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Four satellites are in orbit around the Earth. The heights of their four orbits

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The gravitational pull of Earth is stronger in satellite A

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3 years ago

A constant net force acts on an object. which of the following best describes the object's motion?

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The object is moving with a decreasing acceleration. The object is moving with a constant velocity.

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4 years ago

A system of ideal gas at 22°C undergoes an ischoric process with an internal energy decrease of 4.30 × 10 3 4.30×103 J to a fina

Komok [63]

Answer:

The approximate change in entropy is -14.72 J/K.

Explanation:

Given that,

Temperature = 22°C

Internal energy $U=4.30\times10^{3}\ J$

Final temperature = 16°C

We need to calculate the approximate change in entropy

Using formula of the entropy

$\Delta S=\dfrac{\Delta U}{T}$

Where, $\Delta U$ = internal energy

T = average temperature

Put the value in to the formula

$\Delta S=\dfrac{-4.30\times10^{3}}{\dfrac{22+273+16+273}{2}}$

$\Delta S=-14.72\ J/K$

Hence, The approximate change in entropy is -14.72 J/K.

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4 years ago

An ac generator with Em = 223 V and operating at 399 Hz causes oscillations in a series RLC circuit having R = 222 Ω, L = 147 mH

Doss [256]

Answer:

Xc= 17.267 Ω, Z= 415.5 Ω, I= 0.537 A

Explanation:

Em = 223 V

f= 300 Hz, R = 222 Ω, L = 147 mH, C = 23.1 μF

Capacitive reactance = Xc=?

Xc= $\frac{1}{2\pi fC}$

Xc=1/2pi *399*23.1*10^-6

Xc= 17.267 Ω

b).

Z= $\sqrt{ R^2 + (Xl - Xc)^2}$

Xl= 2π * f * L

Xl= 2π * 399 * 147 * $10^{-3}$

Xl= 368.5 Ω

Z= $\sqrt{ R^2 + (Xl - Xc)^2}$ = $\sqrt{222^2 + (368.5 - 17.267)^2}$

Z= 415.5 Ω

c).

Current:

I= V / Z= Em / Z

I= 223/415.5

I= 0.537 A

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4 years ago

5. Which answer correctly summarizes the essential elements of a scientific theory?. A. descriptions of the natural world; based

Sedaia [141]

"Never become laws; based on strong scientific support; may change based on evidence" is the one answer among the following choices given in the question that correctly summarizes the essential elements of a scientific theory. he correct option among all the options that are given in the question is the third option or option "C".

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4 years ago

Read 2 more answers