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katrin [286]
3 years ago
8

a busis moving with the initial velocity 10m/s . after 4 seconds, the velocity becomes 30m/s . find the acceleration produce by

bus,......please I need help​
Physics
1 answer:
Oksana_A [137]3 years ago
7 0

Answer:

5 m/s²

Explanation:

Use the acceleration formula: a=\frac{v_f-v_i}{t}

  • a = acceleration (m/s²)
  • vf = final velocity (m/s)
  • vi = initial velocity (m/s)
  • t = time (s)

Based on the information given to us by the prompt, we know:

  • vi = 10 m/s
  • vf = 30 m/s
  • t = 4 s

Substitute these values for the variables to calculate the acceleration:

a=\frac{30-10}{4}\\\\a=\frac{20}{4}\\\\a=5

Therefore, the acceleration of the bus is 5 m/s².

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<span>x = sqrt(20^2 - 3^2) </span>
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4 0
3 years ago
8. A crate of bananas weighing 3000 N is shipped from South America to New York, where it
LiRa [457]

Answer:

Mechanical advantage = 15

Explanation:

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6 0
3 years ago
An RL circuit contains a resistor with R = 6800 Ω and an inductor with L = 2300 µH. If the impedance of this circuit is 160,000
Rainbow [258]

| Impedance | = √ [R² +(ωL)²]

R² = 6800² = 4.624 x 10⁷
 
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          = 2.0884 x 10⁻⁴  f²

| Z | =  √[ (4.624 x 10⁷) + (2.0884 x 10⁻⁴ f²) ]  =  1.6 x 10⁵

     (1.6 x 10⁵)²  =  (4.624 x 10⁷) + (2.0884 x 10⁻⁴ f²)

     (2.56 x 10¹⁰) - (4.624 x 10⁷)  =  2.0884 x 10⁻⁴ f²


Frequency² =   (2.56 x 10¹⁰ - 4.624 x 10⁷)  /  2.0884 x 10⁻⁴

                    =       2.555 x 10¹⁰ / 2.0884 x 10⁻⁴

                    =          1.224 x 10¹⁴ 

                    =          122,400 GHz          <== my calculation

                                      11.1 MHz           <== online impedance calculator

Obviously, I must have picked up some rounding errors
in the course of my calculation. 
  











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8 0
3 years ago
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