3 years ago

What will make two bar magnets repel each other?

1 answer:

6 0

The arrows always start at the magnet's north pole and point towards its south pole. When two like-poles point together, the arrows from the two magnets point in OPPOSITE directions and the field lines cannot join up. So the magnets will push apart

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5 points

olga2289 [7]

Answer:

d. 5 ohms

Explanation:

For resistors in parallel, the equivalent resistance is found with:

1/Req = ∑(1/R)

1/R = 1/15 + 1/15 + 1/15

1/R = 3/15

R = 15/3

R = 5

8 0

3 years ago

Briefly describe the two different categories of mechanics:

Stells [14]

Answer:

Statics which is when dealing with forces acting out on body and the possible motives of the body system. Kinetics which explains the motion that can occur in any type of situation.

Explanation:

5 0

3 years ago

A block of wood has a mass of 120 g and a volume of 200cm what is the density of the word

Tanzania [10]

Density =mass/volume 120/200 =0.6 g/cm

8 0

3 years ago

Frank has a sample of steel that weighs 80 grams. If the density of his sample of steel is 8 g/cm3, what is the sample’s volume?

Naddik [55]

10 cm3 because the density equition is d = m/v

7 0

3 years ago

What is the minimum (non-zero) thickness ttt of the film that produces a strong reflection for green light with a wavelength of

scZoUnD [109]

Answer:

200 nm.

Explanation:

The minimum thickness can be found using the following equation:

$2t = \frac{m\lambda}{n}$

Where:

t: is the thickness =?

m: is the order of interference = 1 (since it is minimum)

n: is the refractive index = 1.25

λ: is the wavelength = 500 nm

$t = \frac{m\lambda}{2n} = \frac{500 nm}{2*1.25} = 200 nm$

Therefore, the minimum thickness is 200 nm.

I hope it helps you!

6 0

3 years ago