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3 years ago

WILL MARK BRAINLIEST

Physics

1 answer:

rodikova [14]3 years ago

8 0

Answer:

152,155 J

Explanation:

115,333 + 36,822 = 152,155J

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Why are energy pyramids usually no more than 4 trophic levels?

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An emf source with emf of 200 V, a resistor with R =50.0 Ω, and a capacitor with C = 4.0 mF are connected in series. As the capa

Gemiola [76]

Answer:

0.6 C

Explanation:

From the question,

Since the Resistor and the capacitor are connected in series.

The voltage across the resistor + Voltage across the capacitor = Total voltage.

Vt = Vr+Vc............... Equation 1

Where Vt = Total voltage, Vr = Voltage across the resistor, Vc = Voltage across the capacitor

make Vc the subject of the equation

Vc = Vt-Vr.............. Equation 2

From ohm's law,

Vr = IR................... equation 3

Where I = current, R = Resistance.

Given: I = 1 A, R = 50 Ω

Substitute into equation 3

Vr = 1(50)

Vr = 50 V

Also given: Vt = 200 V

Substitute into equation 2

Vc = 200-50

Vc = 150 V.

Applying,

Q = CVc..................... Equation 4

Where Q = charge on each plate of the capacitor, C = Capacitance of the capacitor

Given: C = 4.0 mF = 4.0×10⁻³ F, Vc = 150 V

Substitute into equation 4

Q = 4.0×10⁻³(150)

Q = 0.6 C

5 0

3 years ago

Calculate the point of no return for an airport runway of 1.60 mi in length if a jet plane can accelerate at 10.1 ft/s2 and dece

Vilka [71]

Answer:

t = 26.39 s

Explanation:

given,

Length of runway = 1.60 mi = 8448 ft

acceleration of the jet = 10.1 ft/s²

deceleration of the jet = 7.21 ft/s²

Let x be the distance of no return

using equation of motion

v² = u² + 2 a s

v² = 0 + 2 × 10.1 × x

v = √(20.2 x)

now, after reaching that Point the deceleration of the plane start

using equation of motion

final velocity of the first case will be the initial velocity of the second case

v² = u² + 2 a s

0 = 20.2 x - 2 x 7.21 x(8448-x)

34.62 x = 121820.16

x = 3518.78 ft

time taken to reach no return point

$x = ut+\dfrac{1}{2}at^2$

$3518.78 =\dfrac{1}{2}\times 10.1\times t^2$

t² = 696.788

t = 26.39 s

time taken to reach the no return point is equal to 26.39 s.

8 0

3 years ago