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Liula [17]
3 years ago
12

How long does it take for a bicycle traveling 7.0 m/s to come to a stop if the

Physics
2 answers:
Olin [163]3 years ago
7 0
B: 10.5s pc.3.5sbdnshd habsbdjebs
marishachu [46]3 years ago
4 0
  • initial velocity=u=7m/s
  • Final velocity=v=0m/s
  • Acceleration=a=-3.5m/s^2

\\ \rm\Rrightarrow v=u+at

\\ \rm\Rrightarrow t=\dfrac{v-u}{a}

\\ \rm\Rrightarrow t=\dfrac{0-7}{-3.5}

\\ \rm\Rrightarrow t=\dfrac{-7}{-3.5}

\\ \rm\Rrightarrow t=2s

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What is the force between two proton’s that are 0.005m apart?
Jet001 [13]

Answer:

Force, F=9.21\times 10^{-24}\ N

Explanation:

Distance between proton is 0.005 m

It is required to find the force between two protons. Protons have of positive charge of 1.6\times 10^{-19}\ C. Two protons will have a force of repulsion between them. The force is given by :

F=\dfrac{kq^2}{r^2}\\\\F=\dfrac{9\times 10^9\times (1.6\times 10^{-19})^2}{(0.005)^2}\\\\F=9.21\times 10^{-24}\ N

So, the force between two protons is 9.21\times 10^{-24}\ N.

7 0
4 years ago
Which is not poor conductor?
lawyer [7]

Answer:

Metal vase

Explanation:

Pure water is not a good conductor, and neither is plastic or cotton. Metal is the only one of the four that actually is a good conductor. For example, lighting hitting metal, this happens because the lightning connects to anything that has some kind of conductant.

4 0
3 years ago
A truck is driving north at 35 miles per hour and passes a car going south at 40 miles per hour. What is the speed of the car fr
inna [77]

Answer:

70

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7 0
3 years ago
Read 2 more answers
In a water park, people walk a distance of 20 meters up an inclined ramp before getting on a water slide. If the spot from where
Elenna [48]
Thank you for posting your Physics question here. I hope the answer helps.  Upon calculating the ramp with the horizontal the answer is 20.49 Deg. Below is the solution:

Y = 7 m. 
<span>r = 20 m. </span>

<span>sinA = Y/r = 7/20 = 0.35. </span>
<span>A = 20.49 Deg.</span>
8 0
3 years ago
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A particle executes simple harmonic motion with an amplitude of 1.69 cm. At what positive displacement from the midpoint of its
m_a_m_a [10]

Answer: 0.0146m

Explanation: The formula that defines the velocity of a simple harmonic motion is given as

v = ω√A² - x²

Where v = linear velocity, A = amplitude = 1.69cm = 0.0169m, x = displacement.

The maximum speed of a simple harmonic motion is derived when x = A, hence v = ωA

One half of maximum speed = speed of motion

3ωA/2 = ω√A² - x²

ω cancels out on both sides of the equation, hence we have that

A/2 = √A² - x²

(0.0169)/2 = √(0.0169² - x²)

0.00845 = √(0.0169² - x²)

By squaring both sides, we have that

0.00845² = 0.0169² - x²

x² = 0.0169² - 0.00845²

x² = 0.0002142

x = √0.0002142

x = 0.0146m

5 0
4 years ago
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