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Montano1993 [528]
3 years ago
12

Is this correct?? or wrong?​

Physics
1 answer:
prisoha [69]3 years ago
6 0
No isnt it decreasing to the right in a negative acceleration
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A ball is thrown straight up with a velocity of 16 m/s; what will be its velocity 2.0s after being released?
harkovskaia [24]
The answer for the question is 8m/s
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A rod of 2.0-m length and a square (2.0 mm × 2.0 mm) cross section is made of a material with a resistivity of 6.0 × 10–8 Ω ⋅ m.
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Answer:

= 8.33 Watt

Explanation:

R = \frac{pl}{A}

where,

p = resistivity

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Given that ,

p = resistivity = 6.0 × 10–8 Ω

l = 2m

A = cross section area = 2.0 mm × 2.0 mm = 4 x 10^-6 m^2

A = 2 x 2 mm^2 = 4 x 10^-6 m^2

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V = 0.5 V

Let R be the resistance of the rod

R = p\frac{l}{A} \\\\R = 6.0 \times 10^-^8 (\frac{2}{4 \times 10^-^6} )\\\\R = 3 \times 10^-^2

R = 3 × 10⁻²Ω

Heat generated  = V^2 / R

= (0.5)^2 / (3 x 10^-2)

 = 8.33 Watt

5 0
3 years ago
A Ping-Pong ball has a mass of 2.3 g and a terminal speed of 9.4 m/s. The drag force is of the form bv^2 What is the value of b?
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b = mg/v^2 = (0.0023×9.81)/(9.4^2)

b = 0.000255


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Technician A says that it is normal to find a little brake fluid behind the dust boot when you pull the dust boot from the wheel
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Technician B

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