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VMariaS [17]
2 years ago
5

An object is moving in a straight line with a constant acceleration. Its position is measured at three different times, as shown

in the table below.
Time (s) 1 Position, (m)
37.70 9.600
39.30 18.048
40.90 33.792
Calculate the magnitude of the acceleration at t=39.30
Physics
1 answer:
stiv31 [10]2 years ago
4 0

The constant acceleration of the object is 0.414\ m/s^2.

<h3>Acceleration of the object</h3>

The acceleration of the object is constant, and the values at the three different positions is the same.

<h3> For the first position and time</h3>

s = v_0 t + \frac{1}{2} at^2\\\\37.7 = v_o(9.6) +\frac{1}{2} a(9.6)^2\\\\ 37.7 = 9.6v_0 + 46.08a

<h3>For the second position and time</h3>

39.3 = v_o(18.048) +\frac{1}{2} a(18.048)^2\\\\ 39.3 = 18.048v_0 + 162.87a

<h3>Solve the first and second equation together</h3>

37.7 = 9.6v_0 + 46.08a\\\\39.3 = 18.048v_0 + 162.87a\\\\18.048: \ \  680.41 = 173.261v_0 + 831.651a\\\\9.6: \ \ \ \  -(377.28 = 173.261 v_0+ 1563.552a)\\------------------\\303.13 = -731.901a\\\\-a = \frac{303.13}{731.901} \\\\-a = 0.414 \ m/s^2\\\\|a| = 0.414 \ m/s^2

Thus, the constant acceleration of the object is 0.414\ m/s^2.

Learn more about acceleration here: brainly.com/question/14344386

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weqwewe [10]

When the gun is fired horizontally :

m = mass of each bullet = 4.20 g = 0.0042 kg

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V' = velocity of the combination of bullet , gun and hunter before fire = 0 m/s

Using conservation of momentum

m v + M V = (m + M) V'

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V = - 0.056 m/s

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When the gun is fired at angle 56.0⁰ above the horizontal :

m = mass of each bullet = 4.20 g = 0.0042 kg

v = velocity of the bullet after fire = 965 Cos56 = 539.62 m/s

M = mass of the hunter including gun  = 72.5 kg

V = velocity of hunter including gun after fire = ?

V' = velocity of the combination of bullet , gun and hunter before fire = 0 m/s

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V = - 0.031 m/s

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3 0
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In a double-slit experiment, light from two monochromatic light sources passes through the same double slit. The light from the
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Answer:

533.33 nm

Explanation:

Since dsinθ = mλ  for each slit, where m = order of slit and λ = wavelength of light. Let m' = 10 th order fringe of the first slit of wavelength of light, λ = 640 nm and m"= 12 th order fringe of the second slight of wavelength of light, λ'.

Since the fringes coincide,

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Explanation:

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v_1 is the final velocity of the alpha particle

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Solving for v_1, we  find the final velocity of the alpha particle:

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