# Electromagnetism Physics Problems: Get Expert Help with Plainmath

Recent questions in Electromagnetism
merodavandOU 2022-11-27

## Which part of the bar magnet exerts the strongest force? Only north poleBoth the polesMiddle part Only south pole

Keira Morgan 2022-11-26

## What is electrostatic force?

cdcamandokwd 2022-11-26

## Dear PlainMath, pls help me to find answerEmission of light from an atom occurs when the electron:

vegetatzz8s 2022-11-26

## The magnetic field around a magnet is the strongest at which points? At the centre At the poles At the sides Same throughout

agrarismoN07 2022-11-26

## The strength of an electromagnet cannot be increased by increasing current in the coil. increasing the number of turns in the coil. reversing polarity of the battery. using core of larger cross-section.

NormmodulxEE 2022-11-25

## Which one of the following statements is/are correct?br>Abr>Formula can be written by balancing the valencies of the different atoms.br>Bbr>Formula can be written by reducing the valencies of different atoms.br>Cbr>Formula are not affected by the presence of valencies.br>Dbr>Formula can be written by adding the valencies of different atoms.

vegetatzz8s 2022-11-25

## The magnitude of the kinetic energy of a body is ‘k’. If its speed doubles, what is its kinetic energy?

Jamir Summers 2022-11-25

## What is magnitude of force?

unecewelpGGi 2022-11-25

## How to calculate the number of electrons?

neimanjaLrq 2022-11-24

## Solve the recurrence relation by taking the logarithm of both sides and making the substitution ${b}_{n}=\mathrm{lg}{a}_{n}$Solve this recurrence relation:${a}_{n}={\left(\frac{{a}_{n-2}}{{a}_{n-1}}\right)}^{\frac{1}{2}}$by taking the logarithm of both sides and making the substitution${b}_{n}=\mathrm{lg}{a}_{n}$A couple years ago I took precalc and a couple years before that I took College Algebra to brush up since before then I'd been out of school for a couple of years already. So I'm extremely rusty and this first step, getting the logarithm of both sides, has me confused enough... Like how would I even get the logarithm of the left side?? and then what exactly is that "substitution" supposed to be substituting?So log'ing both sides I get$\mathrm{ln}\left({a}_{n}\right)=\frac{1}{2}\mathrm{ln}\left({a}_{n-2}\right)-\frac{1}{2}\mathrm{ln}\left({a}_{n-1}\right)$

Brandon White 2022-11-24

## The magnetic field inside a long straight solenoid-carrying current is zero decreases as we move towards its end increases as we move towards its end is the same at all points

LahdiliOsJ 2022-11-24

## "At the junkyard, an electromagnet holds a 1 ton car freely in the air (no acceleration exc. gravity). Assuming 100% power efficiency, how many Watt electrical power are needed?" - I know that the magnet produces 10,000 N, but in order to get the 𝑊, I'd need some velocity (W = Nm/s), and I don't see any m/s?

smekkinnZuG 2022-11-24

## What are the similarities and differences between gravitational, electromagnetic and magnetic force?

lascieflYr 2022-11-23

## What coil position in the magnetic field creates the highest emf?

intrigahQNn 2022-11-23

## What is an electron? State its relative mass and charge.

hEorpaigh3tR 2022-11-23