If an object moves for 0.098 seconds, how long did it move in milliseconds (ms)?

A stationary siren emits sound of frequency 1000 Hz and wavelength 0.343 m. An observer who is moving toward the siren will meas

Ainat [17]

Answer:

f>1000Hz and wavelength=0.343 m

Explanation:

We are given that

Frequency of stationary siren,f=1000 Hz

Wavelength of stationary sound, $\lambda=0.343 m$

When a observer is moving towards the siren then the frequency increases.

Therefore,an observer who is moving towards the siren measure a frequency >1000 Hz.

The wavelength depends upon the speed of source.

But we are given that siren is stationary.

Therefore, source is not moving and then the wavelength remains same.

f>1000Hz and wavelength=0.343 m

4 0

3 years ago

Which statement is true about the electromagnetic spectrum? The visible spectrum includes radio waves, light, and gamma rays. Th

frozen [14]

Answer: It has a range of visible and invisible forms of radiation.

Explanation:

Electromagnetic wave is defined as the wave which is associated with both electrical and magnetic component associated with them. They can travel in vacuum as well and travel with the speed of light i.e $2.998\times 10^8ms^{-1}$

The electromagnetic radiations consist of radio waves, microwaves, infrared ,Visible , ultraviolet, X rays and gamma rays arranged in order of increasing frequency and decreasing wavelengths.

Only visible light is visible to naked eyes.

The relationship between wavelength and frequency of the wave follows the equation:

$\nu=\frac{c}{\lambda}$

where,

$\nu$ = frequency of the wave

c = speed of light

$\lambda$ = wavelength of the wave

From the above relation, it is visible that wavelength and frequency follow inverse relation. For increase in wavelength, the value of frequency decreases and vice-versa.

7 0

3 years ago

How can the shapes of a boat and an airplane affect how water and wind forces act on the objects?

gulaghasi [49]

It would be Aerodinmic

5 0

4 years ago

Water leaks out of a 3,200-gallon storage tank (initially full) at the rate V '(t) = 80 -t, where t is measured in hours and V i

kvasek [131]

Answer:

water leak is 650 gallons

time required to full drain is 80 hrs

Explanation:

given data

volume V = 3200 gallon

rate = V(t) = 80 - t

to find out

how much water leak between 10 and 20 hour and drain complete

solution

we know here rate is 80 - t

so here rate will be

$\frac{dV(t)}{dt}$ = 80 - t

and for time 10 and 20 hour

take integrate between 10 and 20

so water leak = $\int\limits^ {20}_ {10} {(80-t)} \, dt$ .....................1

water leak = ( 80t - $\frac{t^{2} }{2} )^{20}_{10}$

water leak = 650

so water leak is 650 gallons

and

we know here for full tank drain condition

water leak full = 80 t - $\frac{t^{2} }{2}$

3200 = 80 t - $\frac{t^{2} }{2}$

6400 = t² - 160 t

t = 80

so time required to full drain is 80 hrs

6 0

4 years ago

A sarcomere stores calcium within the muscle cell.

professor190 [17]

Sarcomere<span>The Sarcomere is the smallest functional unit of a myofibril (and also of the entire muscle) and contain the contractual elements between each pair of Z-discs.</span>

7 0

4 years ago