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dalvyx [7]
3 years ago
14

A person riding a bike has an initial velocity of 2.5 m/s and accelerates at a rate of 1.5 m/s2 for

Physics
1 answer:
Dovator [93]3 years ago
6 0

Answer:

11.5m/s

Explanation:

v=2.5

a=1.5

t=6s

vf=vi+at

vf=2.5+(1.5)(6)

vf=11.5

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Is my answer correct plz explain i don't understand it.
lora16 [44]

Answer:

yes that is correct

Explanation:

4 0
3 years ago
A coil is connected in series with a 19.0 kΩ resistor. An ideal 50.0 V battery is applied across the two devices, and the curren
Gre4nikov [31]

Answer:

inductance of the coil 29.3767  H

Explanation:

given data

resistor R =  19.0 kΩ = 19 × 10³ Ω

potential applied V  = 50.0 V

current I = 2.20 mA  =  2.20 × 10^{-3} A

time t = 2.80 ms = 2.80 × 10^{-3} s

solution

we know for maximum current in circuit that is

current = V ÷ R   .........1

current =  \frac{50}{19\times 10^3}

current = 2.63 × 10^{-3} A

so at time t = 0

t = -\frac{L}{R} ln(1-\frac{I_f}{I_{max}})  

2.80 \times 10^{-3} = -\frac{L}{19\times 10^3} ln(1-\frac{2.20\times 10^{-3}}{2.63\times 10^{-3}}})  

L = 29.3767

3 0
3 years ago
A car accelerates from rest to 100 m/s in 20 s. What is its acceleration?
Dmitriy789 [7]
  • initial velocity=0m/s=u
  • Final velocity=v=100m/s
  • Time=t=20s

\\ \sf\longmapsto Acceleration=\dfrac{v-u}{t}

\\ \sf\longmapsto Acceleration=\dfrac{100-0}{20}

\\ \sf\longmapsto Acceleration=\dfrac{100}{20}

\\ \sf\longmapsto Acceleration=5m/s^2

7 0
3 years ago
How is the number 860,000 written in scientific notation?
Arlecino [84]
The number 860,000 written in scientific notation is ANSWER: 8.6 x 105
4 0
3 years ago
The cutoff between visible and infrared light is usually said to be somewhere between 700 and 800nm. Why is silicon transparent
Misha Larkins [42]

Answer:

The  infrared  photon  does  not  have  greater  energy as  compare  to   visible  rays  so  infrared  rays  pass  through  but  due  to  greater  energy  than  the  gap  visible  rays  could  not  hence  silicon  is  transparent      to infrared  rays  but  silicon  is   opaque  to   visible  rays .

6 0
3 years ago
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