3 years ago

How do electromagnetic and mechanical waves compare?

Physics

2 answers:

larisa [96]3 years ago

4 0

Transmit energy
Doesn’t transmit matter

creativ13 [48]3 years ago

3 0

Answer:

Transmit energy

Explanation:

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A car travels at a steady 40.0 m/s around a horizontal curve of radius 200 m. What is the minimumcoefficient of static friction

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Explanation:

Let the mass of car be 'm' and coefficient of static friction be 'μ'.

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Speed of the car (v) = 40.0 m/s

Radius of the curve (R) = 200 m

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Centripetal force is, $F_c=\frac{mv^2}{R}$

The frictional force is given as:

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$f=\mu N$

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$f=\mu mg$

Now, the centripetal force is provided by the frictional force. Therefore,

Frictional force = Centripetal force

$f=F_c\\\\\mu mg=\frac{mv^2}{R}\\\\\mu=\frac{v^2}{Rg}$

Plug in the given values and solve for 'μ'. This gives,

$\mu = \frac{(40\ m/s)^2}{200\ m\times 9.8\ m/s^2}\\\\\mu=\frac{1600\ m^2/s^2}{1960\ m^2/s^2}\\\\\mu=0.816$

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The solution is attached in the attachment section

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