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Ronch [10]
3 years ago
9

What happens to the motion of an object when the forces acting on it are balanced? A. The motion changes. B. The motion does not

change. C. The motion speeds up. D. The motion slows down.
Physics
2 answers:
dexar [7]3 years ago
8 0

D. The motion slows down. Because If they are two forces putting force on the opposite sides, then the object would start to balance out and slow down

S_A_V [24]3 years ago
4 0

Question: What happens to the motion of an object when the forces acting on it are balanced?

Choices:

A. The motion changes.

B. The motion does not change.

C. The motion speeds up.

D. The motion slows down.

Answer: <u>D) The motion slows down when a motion of an object forces acting on the balance</u>.

<em>Hope this helps!.</em>

<em>~~~~~~~~~~~</em>

<em>~A.W~ZoomZoom44</em>

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A projectile is fired from ground level with an initial speed of 55.6 m/s at an angle of 41.2° above the horizontal. (a) Determi
sattari [20]

Answer:

(a) t = 3.74 s

(b) H = 136.86 m

(c) Vₓ = 41.83 m/s,  Vy = 0 m/s

(d) ax = 0 m/s²,  ay = 9.8 m/s²

Explanation:

(a)

Time to reach maximum height by the projectile is given as:

t = V₀ Sinθ/g

where,

V₀ = Launching Speed = 55.6 m/s

Angle with Horizontal = θ = 41.2°

g = 9.8 m/s²

Therefore,

t = (55.6 m/s)(Sin 41.2°)/(9.8 m/s²)

<u>t = 3.74 s</u>

<u></u>

(b)

Maximum height reached by projectile is:

H = V₀² Sin²θ/g

H = (55.6 m/s)² (Sin²41.2°)/(9.8 m/s²)

<u>H = 136.86 m</u>

<u></u>

(c)

Neglecting the air resistance, the horizontal component of velocity remains constant. This component can be evaluated by the formula:

Vₓ = V₀ₓ = V₀ Cos θ

Vₓ = (55.6 m/s)(Cos 41.2°)

<u>Vₓ = 41.83 m/s</u>

Since, the projectile stops momentarily in vertical direction at the highest point. Therefore, the vertical component of velocity will be zero at the highest point.

<u>Vy = 0 m/s</u>

<u></u>

(d)

Since, the horizontal component of velocity is uniform. Thus there is no acceleration in horizontal direction.

<u>ax = 0 m/s²</u>

The vertical component of acceleration is always equal to the acceleration due to gravity during projectile motion:

<u>ay = 9.8 m/s²</u>

3 0
3 years ago
A wire is 1.1 m long and 0.91 mm in cross-sectional area. It carries a current of 4.4 A when a 1.8 V potential difference is app
Vlad [161]

Answer:

The conductivity of the material from which the conductor is made is 2.95 x10⁶  [S. m⁻¹]  .

Explanation:

L= 1.1m

S= 0.91 mm²= 9.1 x10⁻⁷ m²

I= 4.4 A

V= 1.8V

\frac{V}{I} =R\\\\\frac{1.8V}{4.4A} =R= 9/22 ohms

R=9/22Ω

R=\frac{L}{σ . S} \\\\Conductivity=sigma=\frac{L}{R.S} \\\\Conductivity= \frac{1.1m}{9/22 ohms . 9.1 E10 (-7) square meters}

Conductivity=2.95 x10⁶  [S. m⁻¹]

3 0
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Ivanshal [37]

Answer:

The frequency what Steve will hear is option a) f'≅ 11kHz

Explanation:

f= 10 kHz

v= 340 m/s

vf= 30 m/s

vo= 0

f'= f * (v/ v- vf)

f'=10.96 kHz ≅ 11 kHz

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What is the economic application of change of state
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It is based on their state like population, literacy and poverty it varies from state to state, country to country
7 0
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How is light refracted inside a crystal ball ?
Bingel [31]
The light refects ofthe sides 
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