A mechanical wave must have a while an electromagnetic wave does not have to require a __

Physics

1 answer:

Helga [31]4 years ago

4 0

Medium (material stuff to travel through)

medium (material stuff to travel through)

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10. Which of the following is an acceleration?<br> a. 12 m/s2 down<br> b. 5 m/s up<br> c. 8N West

nadya68 [22]

Answer:

a. 12 m/s² down

Explanation:

Acceleration has units of length per time squared. Acceleration is a vector, so it also has a direction.

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3 years ago

The position of a 55 g oscillating mass is given by x(t)=(2.0cm)cos(10t), where t is in seconds. determine the velocity at t=0.4

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The position of the mass is given by (in cm):
$x(t)=2 \cos (10 t)$
The velocity is the derivative of the position:
$v(t) = \frac{dx(t)}{dt} =-10\cdot 2 \sin (10t)=-20 \sin (10t)$
Substituting t=0.40 s, we can find the velocity at this time:
$v(0.40 s)= -20 \sin (10 \cdot 0.4)=15 cm/s=15 \cdot 10^{-2}m/s$

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3 years ago

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Red laser light passes through a single slit to form a diffraction pattern. If the width of the slit is increased by a factor of

SCORPION-xisa [38]

If the width of the slit is increased by a factor of two , then the central maxima will get decreased by half.

since , width of the central maxima is inversely proportional to the width of the slit . Which implies if width of the slit get increased then width of the central maxima will get decreased and vice versa.

central maxima = (2 * wavelength * D) / width of the slit

= (2 * lambda * D) / d

if initially width of the slit = d

then, after increasing it by a factor of two it become = 2d

central maxima = (2 * lambda * D) / 2d

= (lambda * D) / d

If the width of the slit is increased by a factor of two , then the central maxima will get decreased by half.

Learn more about central maxima :

brainly.com/question/14279157?referrer=searchResults

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2 years ago