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chubhunter [2.5K]
3 years ago
8

In Robin’s linguistics class, the teacher and students are discussing how the word “nice” once meant “foolish” and how “awful” u

sed to mean “full of awe.” They are most likely discussing ______
A.
morphemes
B.
semantics
C.
phonemes
D.
syntax
Physics
2 answers:
igomit [66]3 years ago
6 0
The answer should be B 
aleksklad [387]3 years ago
4 0
The answer would be B.

Semantics means the study of words and their meanings.

Hope this helped!
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You are a geologist studying the electrical field on a given region. You find that the electric field is vertical and perpendicu
Xelga [282]

Answer:

charge      Qint = 7.17 10⁻⁴ C

Explanation:

For this problem we must use Gauss's law

       F = ∫ E. dA = Qint / εₙ

let's form a Gaussian surface that is parallel to the surface, for example, a Cube. As the field is vertical and perpendicular to the surface, the field lines and the area vector are parallel whereby the scalar product is reduced to an ordinary product.

    Φ = E A = Qint / ε₀

   

    A = 1 km² (1000 m / 1km)² = 1 10⁶ m²

We can calculate the charge

    Qint = E A ε₀

    Qint = 81 1 10⁶ 8.85 10⁻¹²

    Qint = 7.17 10⁻⁴ C

5 0
3 years ago
I want to make a Twinkie splat when I throw it off a building. Because Twinkies are notoriously hard to crush, I want it to hit
Monica [59]

Answer:

s=253.6524712 \approx 253.7

Explanation:

From the question we are told that

Initial speedv=8ft/s

Final speed v=128ft/s

Generally the Newtons  equation of motion is mathematically represented by

V_f^2-V_0^2=2as

with

Therefore

a=g=>9.81m/s^2\\a=32.17ft/s^2

Therefore

128^2-8^2=2*(32.17)*s

16320=2*(32.17)*s

s=\frac{16320}{2*(32.17)}

s=253.6524712 \approx 253.7

3 0
3 years ago
What is the frequency of a wave with speed 3m/s and wavelength 6m?
Korolek [52]

The frequency of the radio wave is

1

×

10

8

H

z

Explanation:

Let's use the this formula:

C

=

λ

×

v

C represents the speed of light, which has a value of approximately

3.00

×

10

8

m

s

λ

represents the wavelength and the units should be in meters.

v represents the frequency, which should have units of

H

z

or

s

−

1

. Hz is hertz or reciprocal seconds.

Now let's rearrange the equation to solve for v:

C

λ

=

v

v

=

3.00

×

10

8

m

s

/

(

3

m

)

=

1

×

10

8

s

−

1The frequency of the radio wave is

1

×

10

8

H

z

Explanation:

Let's use the this formula:

C

=

λ

×

v

C represents the speed of light, which has a value of approximately

3.00

×

10

8

m

s

λ

represents the wavelength and the units should be in meters.

v represents the frequency, which should have units of

H

z

or

s

−

1

. Hz is hertz or reciprocal seconds.

Now let's rearrange the equation to solve for v:

C

λ

=

v

v

=

3.00

×

10

8

m

s

/

(

3

m

)

=

1

×

10

8

s

−

1The frequency of the radio wave is

1

×

10

8

H

z

Explanation:

Let's use the this formula:

C

=

λ

×

v

C represents the speed of light, which has a value of approximately

3.00

×

10

8

m

s

λ

represents the wavelength and the units should be in meters.

v represents the frequency, which should have units of

H

z

or

s

−

1

. Hz is hertz or reciprocal seconds.

Now let's rearrange the equation to solve for v:

C

λ

=

v

v

=

3.00

×

10

8

m

s

/

(

3

m

)

=

1

×

10

8

s

−

1The frequency of the radio wave is

1

×

10

8

H

z

Explanation:

Let's use the this formula:

C

=

λ

×

v

C represents the speed of light, which has a value of approximately

3.00

×

10

8

m

s

λ

represents the wavelength and the units should be in meters.

v represents the frequency, which should have units of

H

z

or

s

−

1

. Hz is hertz or reciprocal seconds.

Now let's rearrange the equation to solve for v:

C

λ

=

v

v

=

3.00

×

10

8

m

s

/

(

3

m

)

=

1

×

10

8

s

−

1

3 0
2 years ago
How do physicists define velocity?
Natalija [7]

Answer:

Velocity, quantity that designates how fast and in what direction a point is moving.

Explanation:

7 0
3 years ago
Read 2 more answers
A projectile is fired from a very powerful cannon vertically upward from Earth's surface at an initial speed of 5.5 km/s . Assum
spayn [35]

Answer:

Maximum altitude above the ground surface is 2053 km.

Explanation:

See written workings in attached picture.

6 0
4 years ago
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