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vlabodo [156]
3 years ago
8

I'll give brainlest

Physics
1 answer:
musickatia [10]3 years ago
6 0

Answer:

The mouse exerts a force on the ground and the ground exerts an equal and opposite reaction force on the mouse.

At point B, Alberto's distance covered increases with time, equal distance is covered in equal time interval. The speed increases uniformly. At the point C to D, the distance covered with time remains the same. At the point D, equal distance is no longer covered in equal time intervals.

According to the law of inertia, an object will remain at rest or in a state of uniform motion unless it is acted upon by an unbalanced force. This means that smokey mouse will continue moving uniformly unless a force acts on it.

From Newton's second law; F = ma and a = F/m. F = force , m= mass, a = acceleration. This implies that smokey mouse can increase its speed by;

Increasing the force acting on the mouse

Decreasing the mass of the mouse

Action and reaction is encountered as the mouse is walking. The mouse exerts a force on the ground and the ground exerts an equal and opposite reaction force on the mouse.

Explanation:

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Friction = 0.25 * m * g = 10.8
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8 0
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It is interesting to speculate on the properties of a universe with different values for the fundamental constants.
qwelly [4]

Answer:

Part a)

\lambda = 0.345 m

Part b)

\Delta x = 0.274 m

Part c)

r = 2.8 \times 10^{11} m

Explanation:

Part a)

De broglie wavelength is given as

\lambda = \frac{h}{mv}

\lambda = \frac{1}{(0.145)(20)}

\lambda = 0.345 m

Part b)

By principle of uncertainty we know that

\Delta x \times \Delta P = \frac{h}{4\pi}

\Delta x \times (0.145)(21 - 19) = \frac{1}{4\pi}

\Delta x = 0.274 m

Part c)

As we know that

\frac{kq_1q_2}{r^2} = \frac{mv^2}{r}

also we know

mvr = \frac{nh}{2\pi}

v = \frac{h}{2\pi mr}

now we have

\frac{ke^2}{r} = \frac{mh^2}{4\pi^2m^2 r^2}

r = \frac{h^2}{4\pi^2mke^2}

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3 years ago
A body travels a distance of 20m in the 7th second and 24m in the 9th second. How much distance shall it travel in the 15th seco
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Answer:

<u>36 m</u>

Explanation:

We can consider this to be an AP.

Then,

  • a₇ = 20
  • a₉ = 24

<u>Subtract a₇ from a₉.</u>

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  • d = 2

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  • a = 8

<u>Finding a₁₅</u>

  • a₁₅ = a + 14d
  • a₁₅ = 8 + 14(2)
  • a₁₅ = 8 + 28
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