1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
AnnyKZ [126]
3 years ago
11

What is a force? A. A force is a form of energy. B. A force is equivalent to work. C. A force is a substance that reacts with ma

tter. D. A force is a push or a pull.
Physics
2 answers:
irinina [24]3 years ago
8 0
The answer is D: a force is a push or a pull
34kurt3 years ago
5 0
You’re answer would be D
You might be interested in
Can you see gas in a bottle
Galina-37 [17]
Depends on what type of gass
6 0
3 years ago
Read 2 more answers
Which statement is true? Hydroelectric power is generated from moving water. Oil, a renewable resource, is processed to make jet
Mrac [35]

Answer: hydroelectric power is generated from moving water

Explanation: hydroelectric power is generated from moving water

6 0
3 years ago
Read 2 more answers
A section of a parallel-plate air waveguide with a plate separation of 7.11 mm is constructed to be used at 15 GHz as an evanesc
adell [148]

Answer:

the required minimum length of the attenuator is 3.71 cm

Explanation:

Given the data in the question;

we know that;

f_{c_1 = c / 2a

where f is frequency, c is the speed of light in air and a is the plate separation distance.

we know that speed of light c = 3 × 10⁸ m/s = 3 × 10¹⁰ cm/s

plate separation distance a = 7.11 mm = 0.0711 cm

so we substitute

f_{c_1 = 3 × 10¹⁰ / 2( 0.0711  )

f_{c_1 = 3 × 10¹⁰ cm/s / 0.1422  cm

f_{c_1 =  21.1 GHz which is larger than 15 GHz { TEM mode is only propagated along the wavelength }

Now, we determine the minimum wavelength required

Each non propagating mode is attenuated by at least 100 dB at 15 GHz

so

Attenuation constant TE₁ and TM₁ expression is;

∝₁ = 2πf/c × √( (f_{c_1 / f)² - 1 )

so we substitute

∝₁ = ((2π × 15)/3 × 10⁸ m/s) × √( (21.1 / 15)² - 1 )

∝₁ = 3.1079 × 10⁻⁷

∝₁ = 310.79 np/m

Now, To find the minimum wavelength, lets consider the design constraint;

20log₁₀e^{-\alpha _1l_{min = -100dB

we substitute

20log₁₀e^{-(310.7np/m)l_{min = -100dB

l_{min = 3.71 cm

Therefore, the required minimum length of the attenuator is 3.71 cm

6 0
3 years ago
A recipe for a sweet tea calls for 3 cups of sugar when you place a sugar into the tea it doesn't dissolve. How could you use di
barxatty [35]

Answer: You could dissolve it by heating it back up, then just cooling it down again.

Hope that helps!

6 0
3 years ago
Read 2 more answers
Suppose that two point charges, each with a charge of +1.00 C, are separated by a distance of 1.0 m. If the distance between the
Aleksandr-060686 [28]

Given:

The magnitude of each charge is q1 = q2 = 1 C

The distance between them is r = 1 m

To find the force when distance is doubled.

Explanation:

The new distance is

\begin{gathered} r^{\prime}=\text{ 2r} \\ =2\times1 \\ =2\text{ }m \end{gathered}

The force can be calculated by the formula

F=k\frac{q1q2}{(r^{\prime})^2}

Here, k is the constant whose value is

k=9\times10^9\text{ N m}^2\text{ /C}^2

On substituting the values, the force will be

\begin{gathered} F=9\times10^9\times\frac{1\times1}{(2)^2} \\ =2.25\times10^9\text{ N} \end{gathered}

7 0
1 year ago
Other questions:
  • Who developed radiometric dating? What age did he assign to the oldest rocks?
    11·1 answer
  • How are the components of a homogeneous mixture distributed
    5·1 answer
  • Mike is conducting an experiment in which he places several different types of soil in a funnel and then pours one liter of wate
    15·2 answers
  • At 30 C, exactly 95 grams of this salt dissolved completely in 100 grams of water. According to the solubility chart, the salt i
    13·2 answers
  • A neuron that is activated when a mosquito lands on your arm
    5·1 answer
  • The motor in a refrigerator has a power output of 294 W. If the freezing compartment is at 271 K and the outside air is at 310 K
    7·2 answers
  • You matter .<br>Until you Multiply yerself by the speed of Light Squared. <br>Then you Energy.<br>​
    5·2 answers
  • An extraterrestrial creature is standing in front of plane mirror. The height of this creature is H and we know that this creatu
    13·1 answer
  • Join not for bâd purpose​
    8·2 answers
  • Gestalt Psychology emphasizes that humans perceive the world _________________.
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!