Speed= (4.92-2.45) 2.47 m/s
Distance= ?
You didn't mention about the distance?
Venus has a surrounding that is approximately one hundred instances thicker than Earth's and has surface temperatures that are extraordinarily hot. Venus no longer has life or water oceans as Earth does.
Venus additionally rotates backward in comparison to Earth and the alternative planets. The geology of Earth is dominated by plate tectonics, Venus has "blob tectonics," wherein the growing of hot material from inside performs a dominant position in sculpting its surface. Venus is also one-of-a-kind from Earth in having miles decrease stage of erosion, because no precipitation and surface wind speeds are very low.
Venus is often called "Earth's dual" because they're similar in size and structure, but Venus has severe floor heat and a dense, poisonous environment. If the sun have been as tall as a typical front door, Earth and Venus could never be about the scale of a nickel.
Learn more about planets here:-brainly.com/question/1286910
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The correct answer is C. Universal Gravitation (it was written by Issac Newton)
Answer:
1. 1800 W
2. $ 17.3
Explanation:
From the question given above, the following data were obtained:
Current (I) = 15 A
Voltage (V) = 120 V
Time (t) = 20 h per day
Duration = 31 days
Cost = 15.5 cents per kWh
1. Determination of the power.
Current (I) = 15 A
Voltage (V) = 120 V
Power (P) =?
P = IV
P = 15 × 120
P = 1800 W
Thus, 1800 W of power is required.
2. Determination of the cost per month (31 days).
We'll begin by converting 1800 W to KW.
1000 W = 1 KW
Therefore,
1800 W = 1800 W × 1 KW / 1000 W
1800 W = 1.8 KW
Next, we shall determine the energy consumption for 31 days. This can be obtained as follow:
Power (P) = 1.8 KW
Time (t) = 2 h per day
Time (t) for 31 days = 2 × 31 = 62 h
Energy (E) =?
E = Pt
E = 1.8 × 62
E = 111.6 KWh
Finally, we shall determine the cost of consumption. This can be obtained as follow:
1 KWh = 15.5 cents
Therefore,
111.6 KWh = 111.6 KWh × 15.5 cents / 1 KWh
111.6 KWh = 1729.8 cents
Converting 1729.8 cents to dollar, we have:
100 cents = $ 1
Therefore,
1729.8 cents = 1729.8 cents × $ 1 / 100 cents
1729.8 cents = $ 17.3
Thus, it will cost $ 17.3 per month to run the electric heater.
Answer:
a) the propagation direction is x, b) E₀ = 125 N / C²
, c) B = 41.67 10⁻⁸ T
,
d) f = 4.95 10¹¹ Hz, e) λ = 4.42 10⁻³ m, f) the speed of light
,
Explanation:
The equation they give for the sine wave is
E = 125 cos (14.2 10² x - 311.2 10¹¹ t)
This expression must have the general shape of a traveling wave
E = Eo cos (kx - wt + Ф)
we can equal each term between the two equations
a) the propagation direction is x, since it is the term that accompanies the vector k
b) the amplitude is the coefficient before the cosine function
E₀ = 125 N / C²
c) to find the amplitude of the magnetic field we use that the two fields are in phase
C = E / B
B = E / c
B = 125/3 10⁸
B = 41.67 10⁻⁸ T
d) the angular velocity is
w = 311.2 10¹¹ rad / s
angular velocity and frequencies are related
w = 2π f
f = w / 2π
f = 311.2 10¹¹ / 2π
f = 4.95 10¹¹ Hz
e) the wavelength is obtained from the wave number
k = 2π /λ
k = 14.2 10² rad / m
λ = 2π / k
λ = 2π / 14.2 10²
λ = 4.42 10⁻³ m
f) the speed of an electromagnetic wave is the speed of light
g) what is a transverse wave
