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rosijanka [135]

3 years ago

11

The electromagnetic waves that have the lowest frequencies are called a. radio waves. c. ultraviolet waves. b. microwaves. d. x-

rays. Please select the best answer from the choices provided A B C D

1 answer:

IgorC [24]3 years ago

3 0

the answer to that would be radio waves which would be answer A

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Heat is distributed through the atmosphere by winds<br> True<br><br> False

amm1812

Answer:

True!

Explanation:

Hope this helps!

5 0

3 years ago

You're driving your pickup truck around a curve that has a radius of 17 m.

creativ13 [48]

Answer:

$v = 10.8 m/s^{2}$

Explanation:

The centripetal force experienced by the steel toolbox is provided by the friction between the toolbox and the bed of the truck.

Therefore,

$\frac{mv^{2} }{r} = f$ --------------------------------(1)

Here,

v - speed of truck

m - mass of toolbox

r - radius of curve around which the truck is turning

f - frictional force

$f \leq$ μmg

In order to obtain Vmax, frictional force must also be max

Thus,

f = μmg--------------------------------------------------(2)

Substitute (2) in (1)

$\frac{mv^{2} }{r} =$ μmg

$v^{2} =$ μgr

g - 9.8 m/ $s^{2}$

The standard value of coefficient of static friction between steel and steel is

μ ≈ 0.7

Therefore,

$v = 10.8 m/s^{2}$

7 0

3 years ago

Find the distance between two slits that produces the first minimum for 410-nm violet light at an angle of 45.0°

Tpy6a [65]

Answer:

Distance between slits, $d=2.89\times 10^{-7}\ m$

Explanation:

It is given that,

Wavelength, $\lambda=410\ nm=410\times 10^{-9}\ m$

Angle, $\theta=45$

We need to find the distance between two slits that produces first minimum. The equation for the destructive interference is given by :

$d\ sin\theta=(n+\dfrac{1}{2})\lambda$

For first minimum, n = 0

So, $d\ sin\theta=(\dfrac{1}{2})\lambda$

d is the distance between slits

So, $d=\dfrac{1/2\lambda}{sin\theta}$

$d=\dfrac{1/2\times 410\times 10^{-9}}{sin(45)}$

$d=2.89\times 10^{-7}\ m$

So, the distance between two slits is $2.89\times 10^{-7}\ m$ . Hence, this is the required solution.

6 0

3 years ago

Which of these statements describes what occurs in facilitated diffusion?-Facilitated diffusion requires energy from the cell to

Softa [21]

Answer:

Facilitated diffusion of solutes occurs through protein pores in the membrane.

Explanation:

Facilitated diffusion: It is known as a type a passive transport which diffuses the solutes through specific trans membrane integral proteins in the plasma membrane. Transport proteins helps in diffuse some ions, and molecules across the plasma membrane.

There are three types of transport proteins which are involved in this diffusion:

1) gated channel proteins.

2) carrier proteins.

3) channel proteins.

Some example of facilitated diffusion are: glucose transporter, ion channels, and aquaporins.

6 0

3 years ago

From part a, you know that surface temperature is a stellar property that we infer indirectly. What must we measure directly so

trasher [3.6K]

We need to directly measure the spectral type in order to determine the surface temperature of a star.

<h3>How do you find the properties of a star?</h3>

Astronomers can determine the temperature of a star by looking at its color and spectrum. The apparent brightness of a star describes how luminous it looks to us. The brightness of a star tells us how bright it really is. The luminance can be determined using both the perceived brightness and the distance.

A star's luminosity, or the total amount of energy it emits each second, is determined by two factors: The stellar photosphere's "Effective Temperature," T. the star's total surface area, which is influenced by its radius, R.

Because it controls how much fuel a star has and how quickly it burns it, a star's mass is its most fundamental characteristic. The majority of a star's life is spent burning hydrogen into helium in its core, which generates energy. The star needs to achieve a balance between gravity and outward pressure in order to continue to be "alive."

To know more about stellar property visit:

brainly.com/question/14950677

#SPJ4

4 0

1 year ago