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andrezito [222]
1 year ago
13

A lighting strike heats the air to about ______ degrees Celsius

Physics
1 answer:
den301095 [7]1 year ago
4 0

Answer:

20,000, though, I'm not completely sure.

Explanation:

"Sound is generated along the length of the lightning channel as the atmosphere is heated by the electrical discharge to the order of 20,000 degrees C (3 times the temperature of the surface of the sun)."

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In a proton accelerator used in elementary particle physics experiments, the trajectories of protons are controlled by bending m
nevsk [136]

To solve this problem it is necessary to apply the concepts related to the energy density in the magnetic fields. Mathematically the expression that determines the relationship between the magnetic field, the permeability constant and the energy density is given by

u = \frac{B^2}{2\mu_0}

Where,

B = Magnetic Field

u = Energy density in magnetic field

\mu_0= Permeability constant

At the same time the energy of a given volume of space is given as

E = uV

Where

E = Magnetic field energy

V = Volume

Our values are given as

\mu_0 = 4\pi*10^{-7}Tm/A

B = 4.8T

V = 10cm^3 = 10*10^{-6}m^3

Replacing in the first equation we can find the energy density

u = \frac{B^2}{2\mu_0}

u = \frac{4.8^2}{2(4\pi*10^{-7})}

u = 9.167*10^{6}J/m^3

Now the net energy would be given by

E = uV

E = (9.167*10^{6})(10*10^{-6})

E = 91.67J

Therefore the Magnetic Field energy is 91.67J

3 0
1 year ago
A fire woman dropped a person onto the safety net. Right
dolphi86 [110]

Answer:

m = 28.7[kg]

Explanation:

To solve this problem we must use the definition of kinetic energy, which can be calculated by means of the following equation.

E_{k}=\frac{1}{2}*m*v^{2}\\

where:

Ek = kinetic energy = 1800 [J]

m = mass [kg]

v = 11.2 [m/s]

1800=\frac{1}{2}*m*(11.2)^{2}\\m = 28.7[kg]

7 0
1 year ago
What causes "changing" motion?
crimeas [40]

Answer:listen to class

Explanation:

-1

8 0
1 year ago
Read 2 more answers
#2 A car accelerates from rest at 4 m/s^2. What is the velocity of the car after 4 second?
solmaris [256]
You use the equation Velocity = Acceleration X Time. 4x4=16m/s.


The car travels 18m in 3 seconds.
3 0
1 year ago
Three vectors , , and , each have a magnitude of 52.0 m and lie in an xy plane. Their directions relative to the positive direct
natka813 [3]

Answer:

a)   A´= A  

b)   θ₁´ = 29º,  θ₂´ = - 169º ,  θ₃´ = -49º

Explanation:

In this exercise you are asked to give the magnitudes and angles of the vectors from another system of

reference

a) The magnitudes

The magnitude of a vector, the size of which is a scalar, this does not depend on the reference system, since it is obtained by subtracting the coordinates of the end point minus the coordinate of the origin of the vector

          A = x_{f}- x₀

if the vectors are measured in another reference frame

         x_{f}´ = xx_{f}- U

         x₀´ = x₀ -U

where U is the distance between the two reference frames

         A´ = x_{f}´ - x₀´

we substitute

         A´ = (x_{f} - U) - (x₀-U) = x_{f} - x₀

         A´ = A

 it does not change

b) Angles

The given angles are measured from the positive part of the x axis in a counterclockwise direction, it is asked to give these angles from the x axis

     θ₁ = 29º

     does not change

     θ₁´ = 29º

    θ₂ = 191º

   we measure clockwise

     θ₂´ = θ₂ - 360

     θ₂´ = 191 - 360

     θ₂´ = - 169º

     θ₃ =311º

    we measure clockwise

     θ₃´ = 311 -360

     θ₃´ = -49º

6 0
1 year ago
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