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2 years ago

When I current is running through a coil of wire with an iron core what is created around the wire that is carrying the current?

2 answers:

4 0

B) A magnetic field is created around the wire.

This idea is one of the fundamental ideas of physics - an electric current has a magnetic field, whether it's moving through a wire or space.

lozanna [386]2 years ago

4 0

Answer:

B. A magnetic field

Explanation:

As per Oersted experimental study he observed that when a magnetic needle is placed around the wire then this magnetic needle will show the deflection

this deflection is due to magnetic force due to some external magnetic field

So when we place a current carrying wire near the magnetic needle then it will produce the magnetic field near the wire and hence it will show the deflection in it

so here we can say that current carrying wire will produce magnetic field in the region surrounding the wire

so correct answer will be

B. A magnetic field

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The helicopter in the drawing is moving horizontally to the right at a constant velocity. The weight of the helicopter is W=4250

Rom4ik [11]

Answer: A) 45503 N b) 16290 N

Explanation:

L = W / cos 21 = 42500 / cos 21 = 45503 N

R = L sin 21 = 45503 x sin 21 = 16290N

3 0

3 years ago

Help solve these two problems im having trouble trying to start these problems?

belka [17]

Answer:

25. Approximately 8.1 meters

26. North 1.31 km, and East 2.81 km

Explanation:

25.

Notice that the displacements: 6 meters east and 5.4 south create the legs of a right angle triangle. The hypotenuse of that triangle will be the distance (d) needed to cover in order to get the ball in the hole in one putt. That is:

$d=\sqrt{6^2+5.4^2} =\sqrt{65.16} \approx 8.072\,\,\,m$

which can be rounded to 8.1 m.

26.

Notice that the 3.1 km at an angle of 25 degrees north of east, is the hypotenuse of a right angle triangle that has for legs the east and north components of that distance.

We can find the leg corresponding to the east displacement using the cosine function (that relates adjacent side with hypotenuse):

$east\,\, comp=3.1 * cos(25^o)\approx 2.809\,\,km$

and we can calculate the north component using the sine function that relates the opposite side to the angle with the hypotenuse.

$north\,\,component = 3.1 * sin(25^o) \approx 1.31 \,\,km$

6 0

3 years ago

Difference between calorimeter and thermometer ?

Kaylis [27]

A calorimeter is can be used to measure the amount of heat released or involved in a chemical reaction. Whereas thermometer can only measures temperature or hotness of a substance. It cannot be used to measure the thermal rate or amount of heat energy of a reaction.

6 0

3 years ago

Read 2 more answers

A solid non-conducting sphere of radius R carries a charge Q distributed uniformly throughout its volume. At a radius r (r <

Svet_ta [14]

Answer:

Hence the answer is E inside $= KQr_{1} /R^{3}$ .