Answer:
A compass works by detecting the Earth's natural magnetic fields. ... This allows the needle to better react to nearby magnetic fields. Since opposites attract the southern pole of the needle is attracted to the Earth's natural magnetic north pole. This is how navigators are able to discern north.
The maximum possible value for d is <u>33.4 m</u>.
The bear chases the tourist with a speed v₁ and the tourist runs with a speed v₂. The distance between the tourist and the car is d and the distance between the tourist and the bear is 22 m. for the tourist to reach the car safely, he should cover the distance d in the same time as the bear, which covers a distance d+22 m.
Therefore,
Substitute 3.8m/s for v₂ and 6.3 m/s for v₁. Solve for d.
The maximum distance between the tourist and his car, for him to be safe from the chasing bear is <u>33.4 m.</u>
It's true
work measure by joule.
Energy = work/time
= joule/s .
and joule/s represents watt
When water boils in a pan on a hot burner, heat gets to the water mainly by conduction of heat through the pan.
The strength of electric field E is 17 N / C.
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<u>Explanation:</u>
Electric field strength is defined as the force per unit charge acting at a point in the given field. The equation for the strength of the electric field is given by
E = F / q
where E represents the electric field strength,
F represents the force in newton,
q represents the charge in coulomb.
Given the charge q = 0.30 coulombs
force F = 5.0 N
Electric field strength E = force / charge
= 5.0 / 0.30
E = 16.66 = 17 N / C.