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3 years ago

A wave with a frequency of 196 Hz

Physics

1 answer:

Marysya12 [62]3 years ago

3 0

Answer:

1372

Explanation:

use the speed formula

Speed=wavelength x frequency

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Salmon often jump waterfalls to reach their breeding grounds. One salmon starts 2m from a waterfall that is 0.55m tall and jumps

mamaluj [8]

The salmon can travel at a speed of 2894673763462m/s and slide into my microwave! PS- Don't judge the salmon, JUST BECAUSE IT ISN'T ATHLETIC!!!! Worst regards, Vivian Carolina Gartea Chiz Demetreo Perez Sanfrasio Smith

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3 years ago

Determine the farthest away a car can be at night so that your eyes can resolve the two headlights. Assume that the the diameter

Zigmanuir [339]

Answer:

The farthest distance is $L_{max}=11.48 km$

Explanation:

The angular resolution is mathematically represented as

$\theta = \frac{Z}{L} = \frac{1.22 \lambda}{d}$

Where Z is the distance between the car head lamp with a value Z = 1.4 m

L is the distance between the eye and the car

$\lambda$ is the wavelength with a value 500 nm = $= 500 *10^{-9}m$

d is the diameter of the eye with a value d = 0.50 cm = $= \frac{0.50}{100} = 0.005m$

The maximum distance $L_{max}$ is given as

$L_{max} = \frac{(1.4) *0.005}{1.22 * (500 *10^{-9})}$

$= 11.48*10^{3}m$

$=11.48 km$

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4 years ago

[OU.04]What type of galaxy is described as having a circular shape with most of the objects concentrated around its center? spir

GalinKa [24]

Answer:

spiral

Explanation:

A galaxy may be defined as the huge collection of celestial bodies like the stars, planets, dark matters, dust and gases and the solar systems. It is derived from the Greek work, 'Galaxias' , which means "milky". There are many types of galaxies. They are : Spiral galaxy, Elliptical galaxy, Irregular galaxy and Barred spiral galaxy.

A spiral galaxy is one which contains a sphere shaped bulge which consists of old stars and it is devoid of dust and gas. Its circular shape composes a disk. It is of circular shape having most of the objects concentrated in its center.

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3 years ago

Read 2 more answers

On Ramesh’s13th birthday, his father invited all his friends and their relatives. It was a big party with lots of food and DJs.

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I go inside and take a nap normally that will help maybe play music

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3 years ago

A ball is thrown nearly vertically upward from a point near the cornice of a tall building. It just misses the cornice on the wa

vovangra [49]

Answer:

a) 48.5 ft/s

b) 36.5 ft

c) -80.3 ft/s

Explanation:

The equation of motion of the ball is :

y(t) = -16.1 ft/s^2 * t^2 + Vo*t

Where Vo is the initial velocity

If y(5s) = - 160 ft:

-160 ft = -16.1 ft/s^2 * (5 s)^2 + Vo*(5s)

Solving for Vo

Vo = (16.1*25- 160) ft / 5s = 48.5 ft/s

To answer this question we must first know when the velocity became zero, at this time is when the ball was at its highest point.

v(t) = -32.2 ft/s^2 * t + Vo

t = Vo/32.2ft/s^2 = 1.5 s

And now, the highest point which the ball reached is given by:

y(1.5s) = -16.1 ft/s^2 * (1.5)^2 + Vo*(1.5s)

y(1.5s) = 36.52 ft

We now need the time at which y(t') = -64 ft

-64 = -16.1*t'^2 + 48.5*t'

By means of the quadratic formula, we find that

t' = 4.00498 s ≈ 4 s

And the velocity at t = 4s is:

v(4s) = -32.2 ft/s^2 * 4s +48.5 ft/s = -80.3 ft/s

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4 years ago