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3 years ago

6

Acceleration question plz help

1 answer:

andrezito [222]3 years ago

3 0

For #5 It's helpful to draw a free body diagram so you know which way the forces are acting on the block.

the weight mg is acting downwards, and you need to find the vertical and horizontal components of mg using sin and cosine. so do 15x9.8xsin40 which is the force. Assuming no friction, this is the only force acting on the block, as the forces on the vertical plane cancel out i.e the normal force and weight of the block.

after, just do F=ma And since you know F and m, solve for a.

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<u>Answer</u>

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Part 3) rise

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Answer:

Explanation:

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Electrons revolve in a circular orbit when forced to travel in a magnetic field whose radius can be expressed as follows

r = mv / Bq

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here given magnetic field B = 90 mT

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Putting these values in the expression above

r = mv / Bq

= $\frac{9\times10^{-31}\times.8385\times10^6}{90\times10^{-3}\times1.6\times10^{-19}}$

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wolverine [178]

Answer:

$f_{beat} = 1.64\ Hz$

Explanation:

given,

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$f' = f(\dfrac{v}{v-v_s})$

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v is the speed of sound, v = 340 m/s

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3 years ago