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4 years ago

Which will be attracted to (or repelled by) a magnet

Physics

2 answers:

Tju [1.3M]4 years ago

3 0

Answer:

An Iron horseshoe , A copper wire carrying current, Another magnet

spayn [35]4 years ago

3 0

Answer:

depends on what your using

Explanation:

A copper wire carrying current, Another magnet, An iron horseshoe

A copper wire carrying current

Another magnet

An iron horseshoe

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Which of the following simple machines is designed primarily to redirect a force rather than reduce the effort required to move

lys-0071 [83]

Answer:

lever

Explanation:

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3 years ago

if two point charges are separated by 1.5 cm and have charge values of 2.0 and -4.0, respectively, what is the value of the mutu

RUDIKE [14]

Complete question:

if two point charges are separated by 1.5 cm and have charge values of +2.0 and -4.0 μC, respectively, what is the value of the mutual force between them.

Answer:

The mutual force between the two point charges is 319.64 N

Explanation:

Given;

distance between the two point charges, r = 1.5 cm = 1.5 x 10⁻² m

value of the charges, q₁ and q₂ = 2 μC and - μ4 C

Apply Coulomb's law;

$F = \frac{k|q_1||q_2|}{r^2}$

where;

F is the force of attraction between the two charges

|q₁| and |q₂| are the magnitude of the two charges

r is the distance between the two charges

k is Coulomb's constant = 8.99 x 10⁹ Nm²/C²

$F = \frac{k|q_1||q_2|}{r^2} \\\\F = \frac{8.99*10^9 *4*10^{-6}*2*10^{-6}}{(1.5*10^{-2})^2} \\\\F = 319.64 \ N$

Therefore, the mutual force between the two point charges is 319.64 N

4 0

3 years ago

Divide 0.0081 by 300 seconds and express the answer in scientific notation.

Colt1911 [192]

Answer:

4×10⁴ seconds

Explanation:

Assuming you have a calculator on hand, inputting 300 ÷ .0081 give should give you 37037.0370...

In scientific notation, that number would be 3.70370370...×10⁴ and when taking into account the rounding rules for significant figures, the answer is 4×10⁴ seconds.

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3 years ago

There is a tree standing in the desert; the sun is rising to the east.

aksik [14]

a. As sun peeks, it creates a straight line- sun to tree to shadow, angle=180°

b. During morning, the sun-tree-shadow changes from 180° to 90°, during noon, angle =90°.During sunset the angle changes from 90 to 0°.

c. Acute angles created in afternoon.

d. A right angle would be created at noon.

e. Obtuse angle would be created in morning.

f. Yes, a straight angle would be created at sunrise.

g. When sun is at mid-morning, the angle=45°+90°= 135°

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3 years ago

Which is not a step of the scientific method?

eduard

Taste your expirement

7 0

3 years ago

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Which will be attracted to (or repelled by) a magnet​

Which will be attracted to (or repelled by) a magnet