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Cerrena [4.2K]
2 years ago
12

Earth's gravity acts upon objects with a steady force of __________. A. 8. 9 meters per second B. 9. 8 meters per minute C. 8. 9

meters per minute squared D. 9. 8 meters per second squared Please select the best answer from the choices provided. A B C D.
Physics
1 answer:
Mila [183]2 years ago
8 0

Answer:

9.8 meters per second squared

Explanation:

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Gauss’s law of magnetism states that the net magnetic flux through any closed surface is zero.
vesna_86 [32]

Answer:

True

Explanation:

Gauss's law:

It is one of the Maxwell's equations which are the foundation of Electrodynamics. According to this law magnetic field has zero divergence and magnetic monopole can't exist. Inside a closed surface, the magnetic flux inward at the south pole will be exactly equal to the outward magnetic flux at the north pole of the magnetic dipole. Thus, the net magnetic flux will be zero.

5 0
3 years ago
People cannot see certain types of light waves because:
enot [183]

Answer:

Light comes in different colors like radio, ultra violet, gamma-ray, etc, and they are invisible to the bare eye

Explanation:

5 0
2 years ago
M
Katena32 [7]

The net force needed to accelerate a 200 kg piano is 50N

According to Newton's law of motion, the formula for the net force is calculated as:

∑F = ma

Given the following parameters

Mass = 200kg

acceleration = 0.25m/s²

Substitute the given parameters into the formula

∑F = 200 * 0.25

∑F = 50N

Hence the net force needed to accelerate a 200 kg piano is 50N

Learn more here: brainly.com/question/19030143

7 0
3 years ago
A horizontal metal bar oriented east-west drops straight down in a location where the earth's magnetic field is due north. as a
amid [387]

Metal bar is aligned along East- West direction and it is dropped vertically down

So its velocity is along -Z direction,

Now the Earth's magnetic field is towards north so its towards +Y direction

now we have formula for force on a moving charge

F = q(v X B)

v = - z direction

B = + y direction

now by the above formula

F = q(v(-k) X B(j))

F = qvB (i)

So force is towards East

so all positive charge is towards East end


5 0
3 years ago
An RLC circuit is used in a radio to tune into the radio lagos fm Station broadcasting at 93.5Hz. The resistance is 15ohms and t
bazaltina [42]

The characteristics of the RLC circuit allow to find the result for the capacitance at a resonance of 93.5 Hz is:

  • Capacitance is C = 1.8 10⁻⁶ F

A series RLC circuit reaches the maximum signal for a specific frequency, called the resonance frequency, this value depends on the impedance of the circuit.

            Z^2 = R^2 + ( wL - \frac{1}{wC} )^2  

Where Z is the impedance of the circuit, R the resistance, L the inductance, C the capacitance and w the angular velocity. The negative sign is due to the fact that the current in the capacitor and the inductor are out of phase.

In the case of resonance, the impedance term completes the circuit as a resistive system.

           wL - \frac{1}{wC} = 0  \\w^2 = \frac{1}{LC}  

           

Indicate that the inductance L = 1.6 H and the frequency f = 93.5 Hz.

Angular velocity and frequency are related.

         

         w = 2π f

           

Let's  substitute.

          C = \frac{1}{L ( 2 \pi f)^2 }  

 

Let's calculate.

         C = \frac{1}{1.6 \ ( 2\pi \ 93.5)^2}  

         C = 1.8 10⁻⁶ F

In conclusion with the characteristics of the RLC circuits we can find the result for the capacitance at a 93.5 Hz resonance is:

  • Capacitance is C = 1.8 10⁻⁶ F

Learn more about serial RLC circuits here: brainly.com/question/15595203

4 0
2 years ago
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