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Maksim231197 [3]
3 years ago
11

Which happens to the magnetic field of a wire when you change the direction of the current in the wire? It becomes stronger. It

becomes weaker. It changes direction too. It stays the same.
Physics
1 answer:
scZoUnD [109]3 years ago
7 0
Answer C. The magnetic field changes direction too.
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A variable (often denoted by x ) whose variation does not depend on that of another.

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In a tank full of water, the pressure on a surface 2 meters below the water level is 1.5 kPA. What's the pressure on a surface 6
Lina20 [59]

Answer:

P = 40.7kPa

Explanation:

To find the pressure on a surface 6 meter below you use the following formula, which takes into account the heights in which pressures are measured and also the density of the fluid and the gravitational acceleration:

P_2-P_1=-\rho g(y_2-y_1)             (1)

P2: pressure for a height of -6 m = ?

P1: pressure for a height of -2 m = 1.5kPa = 1500 Pa

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g: gravitational acceleration = 9.8 ms^2

y2: -6m

y1: -2m

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You solve the equation (1) for P1:

P_1=P_2-\rho g(y_2-y_1)         (2)

Next, you replace the values of all variables in equation (2):

P_2=1500Pa-(1000kg/m^3)(9.8m/s^2)(-6-(-2))m=40700Pa\\\\P_2=40.7kPa

hence, the pressure on a surface 6 m below the water level is 40.7kPa

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3 years ago
Which describes the wavelength of a wave?
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Mass and energy are alternate aspects of a single entity called mass-energy. The relationship between these two physical quantit
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ΔE = Δm × c^2

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= 3 × 10^8 m/s

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2H2 + O2 --> 2H2O

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= 1.727 × 10^-11 kg

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