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3 years ago

Which force causes a north pole and a south pole to attract each other?

Physics

2 answers:

RideAnS [48]3 years ago

5 0

Hello :)

Your answer is Magnetic

Hope this helps and have a wonderful day

elena55 [62]3 years ago

4 0

Answer:

C. Magnetic force

Explanation:

Electrical force acts only between charges

Gravity acts between two masses but it is very week so its effect can be ignored

Magnetic force is the force that acts between opposite magnetic polarity

Compression is the mechanical force

The other forces, except magnetic force, are independent of the magnetic polarity. hence the correct answer is C. magnetic force

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A manufacturer provides a warranty against failure of a carbon steel product within the first 30 days after sale. Out of 1000 so

hodyreva [135]

Answer:A) Risk(R)= $1000

B) There is justification for spending an additional cost of $100 to prevent a corrosion whose consequence in monetary terms is $1000

Explanation:R= Risk,

P=Probability of failure

C= Consequence of failure

Mathematically, R=P ×C

10 out of 1000 carbon-steal products failed

Probability of failure= 10/1000 =0.01

The consequence of failure by corrosion given in monetary term =$100,000

Risk of failure = 0.01 × $100,000

R=$1000

4 0

2 years ago

How much work is needed to push a 117- kg packing crate a distance of 2.75 m up an inclined plane that makes an angle of 28 o wi

Nataly_w [17]

Answer:

$W_{tot,min} = 1481.372\,J$

Explanation:

The minimum total work is the work needed to counteract the work associated with the weight:

$W_{tot, min} = W_{F}$

$W_{tot,min} = m\cdot g\cdot \sin \theta \cdot \Delta s$

$W_{tot,min} = (117\,kg)\cdot (9.807\,\frac{m}{s^{2}} )\cdot (\sin 28^{\textdegree}) \cdot (2.75\,m)$

$W_{tot,min} = 1481.372\,J$

6 0

3 years ago

Read 2 more answers

What is the magnitude of the velocity when the elastic potential energy is equal to the kinetic energy? (Assume that U=0 at equi

zhannawk [14.2K]

Answer:

Explanation:

General Equation of SHM is given by

$x=A\cos \omega t$

$v=-A\omega \sin \omega t$

where x=position of particle

A=maximum Amplitude

$\omega =$ angular frequency

t=time

At any time Total Energy is the sum of kinetic Energy and Elastic potential Energy i.e. $\frac{1}{2}kA^2$

where k=spring constant

Potential Energy is given by $U=\frac{1}{2}kx^2$

also it is given that Potential Energy(U) is equal to Kinetic Energy(K)

Total Energy $=K+U$

Total $=2U=2\times \frac{1}{2}kx^2$

$\frac{1}{2}kA^2=2\times \frac{1}{2}kx^2$

$x=\pm \frac{A}{\sqrt{2}}$

at $x=\frac{A}{\sqrt{2}}$

velocity is $v=\frac{A\omega}{\sqrt{2}}$

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3 years ago

John walks four kilometers east, two kilometers north as shown in the diagram below. What is John’s displacement

VashaNatasha [74]

Not 100% positive, but i believe 7 km east?

4 0

2 years ago

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How do electric and magnetic fields interact in an electromagnetic wave?

kotegsom [21]

Answer:

Electric and magnetic field waves are oriented at 90 degree angles relative to each other.

Explanation:

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3 years ago