The intensity of the electromagnetic wave which travels in an insulating magnetic material in a medium is 5.766×10⁻⁸ W/m².
The intensity of a wave is the total power delivered per unit area. It can be given as,
It can also be given as,
Here, () is relative permeability, () is physical constant, (k) is dielectric constant, (E) is the amplitude of electric field, and is the permittivity of free space.
Here, the electromagnetic wave with frequency 65.0hz travels in an insulating magnetic material that has dielectric constant 3.64 and relative permeability 5.18 at this frequency.
As the electric field has amplitude 7.20×10−3v/m. Thus, put the values in the above formula to find the intensity as,
Hence, the intensity of the electromagnetic wave which travels in an insulating magnetic material in a medium is 5.766×10⁻⁸ W/m².
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B. A pingpong ball rolling a 2 m/s
C. A bowling ball rolling at 1m/s
D. A car rolling at 5 m/s
Answer:
A. A tractor trailer rig moving at 2 m/s
Explanation:
Inertia can be defined as the tendency of an object or a body to continue in its state of motion or remain at rest unless acted upon by an external force.
In physics, Sir Isaac Newton's first law of motion is known as law of inertia and it states that, an object or a physical body in motion will continue in its state of motion at continuous velocity (the same speed and direction) or, if at rest, will remain at rest unless acted upon by an external force.
The inertia of an object such as a tractor trailer rig is greatly dependent or influenced by its mass; the higher quantity of matter in a tractor trailer rig, the greater will be its tendency to continuously remain at rest.
Hence, the object that has more inertia is a tractor trailer rig moving at 2 m/s because it has more mass than all the other objects in the category. Also, the mass of an object is directly proportional to its inertia.
a). The magnitude along with the direction of the electric field releasing westward force of × N would be:
× N/C is Eastward Direction
b). The magnitude along with the force of the direction that this field releases on proton would be:
× in Eastward Direction
a). Given that,
Force × N
As we know,
Force Charge × Electric Field
So,
∵ Electric Field
× ) ×
×
The direction of the field would be opposite i.e. Eastward direction due to the field carrying a -ve charge.
b). The magnitude carried by the force working on the proton would be the same with an opposite direction due to +ve charge.
∵ Force × N in Eastward direction.
Learn more about "Magnitude" here:
Explanation:
(a) E = F/q
E = 4.8×10^-17/1.6×10^-19
E = 300 N/C
(b) same magnitude of electric field is exerted on proton
Answer:
80×5×10=4000J
so therefore, work done on the body is 4000J
Answer:
Explanation:
For refraction through a curved surface , the formula is as follows
μ₂ / v - μ₁ / u = (μ₂ -μ₁ )/R , Here μ₂( air) = 1 , μ₁ ( water) = 4/3 , R = 1.95 m
u , object distance = - .465 m
1 / v + 1.333 / .465 = (1 -1.333 )/1.95
1 / v + 2.8667 = - .171
1 / v = - 2.8667 - .171 = - 3.0377
v = - .3292 m
= - 32.92 cm
image will be formed in water.
c ) magnification = μ₁v / μ₂u , μ₁ = 1.33 , μ₂ = 1 , u = 46.5 , v = 32.92 .
= (1.33 x 32.92) / (1 x 46.5)
= .94
size of image of teeth = .94 x 5
= 4.7 cm .
Answer:
Acceleration = 8.27 cm/s²
Explanation:
We are given;
initial velocity; v_i = 10.5 cm/s
Initial position; x_i = 2.72 cm
Time; t = 2.30 s
final position; x_f = 5.00 cm
To find the acceleration, we will make use of the formula;
x_f - x_i = (v_i * t) - (½at²)
Plugging in the relevant values, we have;
5 - 2.72 = (10.5 × 2.3) - (½ × a × 2.3²)
2.28 = 24.15 - 2.645a
24.15 - 2.28 = 2.645a
2.645a = 21.87
a = 21.87/2.645
a = 8.27 cm/s²
Using the kinematic equation, the acceleration of the object was calculated to be approximately8.27 cm/s² given its initial velocity, position, time, and final position.
We are given:
Initial velocity (vᵢ) = 10.5 cm/s
Initial position (xᵢ) = 2.72 cm
Time (t) = 2.30 seconds
Final position () = 5.00 cm
We want to find the acceleration (a) of the object using the kinematic equation:
x₋ᵢ - xᵢ = (vᵢ * t) - (1/2) * a * t²
Now, let's substitute the given values:
5.00 cm - 2.72 cm = (10.5 cm/s * 2.30 s) - (1/2) * a * (2.30 s)²
Simplify the equation:
2.28 cm = 24.15 cm - (1/2) * a * 5.29 s²
Now, isolate 'a' by rearranging the equation:
-1.09 cm = (-1/2) * a * 5.29 s²
To remove the negative sign, multiply both sides by -1:
1.09 cm = (1/2) * a * 5.29 s²
Next, solve for 'a' by multiplying both sides by (2 / 5.29):
a ≈ (1.09 cm) / (2 / 5.29) s²
a ≈ 8.27 cm/s²
So, the acceleration of the object is approximately 8.27 cm/s².
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