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3 years ago

A mixture that appears to contain only one substance is a(n)

Physics

2 answers:

bekas [8.4K]3 years ago

8 0

Answer:

mixtures that appear to be the same throughout are homogenous mixtures

Goryan [66]3 years ago

4 0

Mixtures that seem to contain only one substance are homogeneous mixtures. You can figure this out because an element or compound aren’t mixtures. And the prefix “homo” means same while the prefix “hetero” means different. So homogeneous is a mixture that looks the same. Hope this helps, have a good day :)

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An object is 27.0 cm from a concave mirror of focal length 15.0 cm. find the image distance.

pantera1 [17]

The distance of the Image will be -33.75 cm

A concave mirror has an inward-curving reflecting surface that faces away from the light source. Unlike convex mirrors, a concave mirror's image forms a variety of images based on the object's proximity to the mirror.

Given that, an object placed 27 cm from a concave mirror having the focal length of 15 cm

We have to find distance of the Image

Using Mirror Formula:

1/f = 1/v + 1/u

Where,

f = focal length

v = Image distance from the mirror

u = object distance from the mirror (concave)

Substitute the known values in the above formula to find the value of 'v' i.e. from the mirror.

1/(-15) = 1/v + 1/(-27)

1/(-15) = 1/v - (1/27)

1/v = -0.029

v = -33.75 cm

Therefore the distance of the Image will be -33.75 cm

Learn more about concave mirror here:

brainly.com/question/9816370

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8 0

2 years ago

Due to an influx of wild animals, you need to enclose your garden. You have 500 feet of fencing and will enclose the garden on t

elena55 [62]

Answer:

so length of the fence is 250 feet

Explanation:

Given data

fencing (L) = 500 feet

enclose the garden = 3 sides

to find out

length of the fence

solution

we consider barn length x and width y

so we say x +2y = 500 ........1

we want to maximize length i.e xy = f

so we say

df/dx = ƛ × dL/dx

y = ƛ × 1

and

df/dy = ƛ × df/dy

x = ƛ × 2

from equation 1 we can say

2 ƛ + 2 ƛ = 500

so ƛ = 500/4 = 125

so that x = 2× 125 , y = 125

so x = 250 , y = 125

so length of the fence is 250 feet

3 0

4 years ago

A wheel has a constant angular acceleration of 1.8 rad/s2. During a certain 4.0 s interval, it turns through an angle of 45 rad.

tankabanditka [31]

Answer:

4.25 s

Explanation:

Given:

angular acceleration'α'= 1.8 rad/s²

angle 'θ'= 45 rad

time 't'= 4s

initial angular velocity ' $w_{o}$ '=0 $rad^{-1}$

as we know that,

θ= $w_{1}$ t + $\frac{1}{2} \alpha t^{2}$

45 = 4 $w_{1}$ + (0.5 x 1.8 x 16)

45- 14.4 = 4 $w_{1}$

30.6 = 4 $w_{1}$

$w_{1}$ = 7.65 $rad^{-1}$

Next is to find t by using the equation

$w_{1}$ = $w_{o}$ + $\alpha t_{1}$

7.65= 0 + (1.8) $t_{1}$

$t_{1}$ = 7.65/1.8

$t_{1}$ = 4.25 s

Therefore, At the start of 4s interval the motion is at 4.25 second

7 0

4 years ago

Select all of the answers that can serve as a meaning for sexuality. (more than one answer may be selected)

Aneli [31]

Gender and self esteem is the answer

5 0

3 years ago

PLEASE PLEASE HELP AND PUT A REAL ANSWER ;-;. ALSO WILL GIVE BRAINLEST!!

Xelga [282]

Answer:

Troposphere

High-pressure areas form due to downward motion through the troposphere, the atmospheric layer where weather occurs.

3 0

3 years ago