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Over [174]
3 years ago
5

A sprinter runs 500 meters west in a straight line and then turns around and runs in the same

Physics
1 answer:
Kipish [7]3 years ago
6 0

Answer:

200 meters

Explanation:

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Two long parallel wires are separated by forty centimeters and carry oppositely-directed currents of ten amperes. Find the magni
Softa [21]

Answer:

1.04μT

Explanation:

Due to both wires have opposite currents, the magnitude of the total magnetic field is given by

B_T=\frac{\mu_o I}{2 \pi r_1}-\frac{\mu_o I}{2 \pi r_2}

I: electric current = 10A

mu_o: magnetic permeability of vacuum = 4pi*10^{-7} N/A^2

r1: distance from wire 1 to the point in which B is measured.

r2: distance from wire 2.

The distance between wires is 40cm = 0.4m. Hence, r1=0.2m r2=0.6m

By replacing in the formula you obtain:

B_T=\frac{(4\pi *10^{-7}N/A^2)(10A)}{2\pi}(\frac{1}{0.4m}-\frac{1}{0.6m})=1.04*10^{-6}T =1.04\mu T

hence, the magnitude of the magnetic field is 1.04μT

4 0
3 years ago
Ow do quantum numbers relate to electrons?
strojnjashka [21]
They enable us to dig deeper into the electron configurations by making us focus on electrons' quantum nature
3 0
3 years ago
how is it that an electric bulb lights up as soon as we turn the switch on if the drift speed is 1mm /s^2
galben [10]
Two analogies: 
1. The wires are like hoses full of water. As soon as you turn on the water, water is pushed out the end of the hose. 
2. Although the electrons only move at 1mm/s, the electomagnetic pulse travels through the circuit at near speed of light (varies btw .1c to .9c). It is this pulse that provides the pressure to push the electrons out the end of the wire into the light
5 0
3 years ago
PLEASE HELP ASAP BEST ANSWER WILL BE MARKED BRAINLIEST!!!!!
umka2103 [35]

Answer:

i think its The movement of large pieces of ice from one place to another.

Explanation:

3 0
2 years ago
Which statement correctly describes variable stars?
Kryger [21]

Answer:

D)

Explanation:

The Period-Luminosity relationship tells us that luminosity increases with the period, and of course the more luminosity a star has the more far away they can be seen, so from this we know that:

A) False since lower luminosities can be observed when they are close.

B) False since longer periods means higher luminosities

C) False since lower luminosities can be observed when they are close.

D) True: Variable stars with shorter periods have lower luminosities, so they can only be observed when they are close.

5 0
3 years ago
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