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Ivan
3 years ago
5

What is the electrostatic force between and electron and a proton separated by 0.1 mm? 2.3 × 10^-20N, attractive.

Physics
1 answer:
Ad libitum [116K]3 years ago
6 0

Answer:

2.3 × 10⁻²⁰ N, attractive

Explanation:

An electron has a negative charge and a proton has a positive charge. Opposite charges attract each other. We can calculate the magnitude of this attractive force (F) using Coulomb's law.

F=k.\frac{q_{1}\times q_{2}}{r^{2} }

where,

k: Coulomb's constant

q: charges

r: distance

F=k.\frac{q_{1}\times q_{2}}{r^{2} }=8.99 \times 10^{9}N.m^{2}.C^{-2} \frac{(1.6 \times 10^{9}C)^{2} }{(0.1 \times 10^{-3}m)^{2} } =2.3 \times 10^{-20}N

The modulus of the force is 2.3 × 10⁻²⁰ N.

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8 0
3 years ago
The current world-record motorcycle jump is 77.0 m, set by Jason Renie. Assume that he left the take-off ramp at 13.0° to the ho
kotegsom [21]

Answer:

The take-off speed is 41.48 \frac{m}{s}

Explanation:

Given :

Range R = 77 m

Projectile angle \alpha  = 13°

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  R = \frac{v_{o} ^{2}   }{g} \sin 2\alpha

Find the velocity from above equation,

  v_{o} = \sqrt{\frac{gR}{\sin 2 \alpha } }

  v_{o} = \sqrt{\frac{9.8 \times 77}{\sin 26} }                              ( ∵ g = 9.8 \frac{m}{s^{2} } )

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7 0
3 years ago
A rope of total mass m hnd length L is suspended vertically with an object of mass M suspended from the lower end. Find an expre
pantera1 [17]

Answer:

Part a)

v = \sqrt{xg + \frac{MLg}{m}}

Part b)

t = 12 s

Explanation:

Part a)

Tension in the rope at a distance x from the lower end is given as

T = \frac{m}{L}xg + Mg

so the speed of the wave at that position is given as

v = \sqrt{\frac{T}{\mu}}

here we know that

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now we have

v = \sqrt{\frac{ \frac{m}{L}xg + Mg}{m/L}

v = \sqrt{xg + \frac{MLg}{m}}

Part b)

time taken by the wave to reach the top is given as

t = \int \frac{dx}{\sqrt{xg + \frac{MLg}{m}}}

t = \frac{1}{g}(2\sqrt{xg + \frac{MLg}{m}})

t = \frac{2}{9.8}(\sqrt{(39.2\times 9.8) + \frac{8(39.2)(9.8)}{1}})

t = 12 s

4 0
3 years ago
A solid Cute hug sides 0.50m
irina [24]

Answer:

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Explanation:

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ohaa [14]

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8 0
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