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andrey2020 [161]
3 years ago
12

( WILL GIVE BRAINLIEST TO WHOEVER ANSWERS FIRST AND SHOWS WORK) A car weighs 15300 N. What is its mass?

Physics
1 answer:
mylen [45]3 years ago
7 0

Answer:

Mass, m = 1561.23kg

Explanation:

Given the following data;

Weight = 15300N

We know that acceleration due to gravity is equal to 9.8m/s²

To find mass;

Weight can be defined as the force acting on a body or an object as a result of gravity.

Mathematically, the weight of an object is given by the formula;

Weight, W = mg

Where;

  • m represents the mass of an object measured in kilograms.
  • g is the acceleration due to gravity measured in meters per seconds square.

Substituting into the equation, we have;

15300 = m*9.8

m = \frac {15300}{9.8}

<em>Mass, m = 1561.23 Kg</em>

<em>Therefore, the mass of the car is 1561.23 kilograms.</em>

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A wind turbine takes in energy from wind with the goal of converting it into electrical energy. Much of the wind energy is also
kondor19780726 [428]

The efficiency of the turbine is 50%.

The given parameters:

  • <em>Kinetic energy of the wind, E = 3000 J</em>
  • <em>Output electrical energy, E(out) = 750 J</em>
  • <em>Energy lost to heat, E(lost) = 750 J</em>
  • <em>Kinetic energy of the turbine, E(in) = ?</em>

The kinetic energy of the turbine which is the input energy is calculated as follows;

E(in) = 3000 - (750 + 750)

E(in) = 1500 J

The efficiency of the turbine is calculated as follows;

E_f_f = \frac{E_{(out)}}{E_{(in)}} \times 100\%\\\\E_f_f = \frac{750}{1500} \times 100\%\\\\E_f_f = 50  \%

Thus, the efficiency of the turbine is 50%.

Learn more about efficiency of turbine here: brainly.com/question/2009210

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3 years ago
Friction between solids can be most accurately defined as the force that
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Answer:

True

Explanation:

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opposes the sliding motion of two surfaces that are touching each other.

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Protein has 4 cals carbs have 4 too. Fat however has 9. 
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A series RLC circuit consists of a 52.0 Ω resistor, a 4.80 mH inductor, and a 330 nF capacitor. It is connected to an oscillator
Tju [1.3M]

Answer:

(G) 75.11 ohm

(H) 0.08 A

(I) 46.2 degree

Explanation:

R = 52 ohm

L = 4.8 m H = 4.8 x 106-3 H

C = 330 nF = 330 x 10^-9 F

Vo = 6 V

(G)

f = 5000 Hz

Let the impedance is Z.

X_{L}= 2 \pi fL = 2 \times 3.14\times 5000\times 4.8\times 10^{-3}=150.72 ohm

X_{c}= \frac{1}{2 \pi fC}=\frac{1}{2\times 3.14\times 5000\times 330\times 10^{-9}}=96.51 ohm

Z=\sqrt{R^{2}+\left ( X_{L}-X_{c} \right )^{2}}

Z=\sqrt{52^{2}+\left (150.72-96.51)^{2}}=75.11 ohm

(H) Let Io be the peak current

I_{0}=\frac{V_{0}}{Z}=\frac{6}{75.11}=0.0798 A = 0.08 A

(I) Let Ф be the phase angle

tan\phi = \frac{X_{L}-X_{C}}{R}

tan\phi =\frac{150.72-96.51}}{52}=1.0425

Ф = 46.2 degree

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3 years ago
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