3 years ago

The diagram below shows a section of a roller coaster track. Five points on the track are labeled. Between which

Physics

1 answer:

arlik [135]3 years ago

7 0

Answer: u and v. Trust me I took the test and i was right

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What is the sound intensity level in a car when the sound intensity is 0.525 μW/m2 ? Use I0 = 1.00×10−12 W/m2 for the reference

never [62]

Answer:

The sound intensity level in the car is 57.2 dB.

Explanation:

Sound intensity level in decibels, β = 10 log (I/I₀); where I = 0.525 × 10⁻⁶ W/m², I₀ = 1.0 × 10⁻¹² W/m²

β (dB) = 10 log ((0.525 × 10⁻⁶)/(1.0 × 10⁻¹²)) = 10 × 5.72 = 57.2 dB

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3 years ago

The potential difference across a variable resistor is 11V and the current flowing through it is 0.4A.

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The resistance is 27.5 ohms

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3 years ago

When point charges q = +8.4 uC and q2 = +5.6 uC are brought near each other, each experiences a repulsive force of magnitude 0.6

Stella [2.4K]

Answer:

it is separated by 80 cm distance

Explanation:

As per Coulombs law we know that force between two point charges is given by

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$F = 0.66 N$

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