Ask question

Ask question

All categories

3 years ago

7

a student preformed a trick using a bar magnet and a paper clip. The paper clip was attached to a piece of string that was taped

to the table. The clip appears to float just below the magnet. Explain how the floating paper clip trick works.

1 answer:

shtirl [24]3 years ago

7 0

It works because the paper clip is heavier and more magnetic to the magnet

You might be interested in

The Starship Enterprise is caught in a time warp and Spock is forced to use the primitive techniques of the 20th century to dete

Goryan [66]

Answer:c=0.213 J/g/K

Explanation:

Given

sample mass $(m_s)=120 gm$

initial temperature of mineral $(T_{im})=92.6$

mass of water $(m_w)=82.9$

Water initial temperature $(T_{iw})=20$

Heat capacity of calorimeter =15.3 J/k

Final Temperature is 24.8

let c be the specific heat of mineral

Heat released by mineral sample=heat absorbed by calorimeter and water

$120\times c\times (92.6-24.8)=82.9\times 4.184\times (24.8-20)+15.3\times (24.8-20)$

$c\times 67.8=14.486$

$c=0.213 J/g/K$

3 0

3 years ago

Please help. Having a hard time figuring out

Goryan [66]

Yeah that’s is correct

5 0

3 years ago

65. A length of wire is bent into a closed loop and a magnet is plunged into it, inducing a voltage and, consequently, a current

natulia [17]

Answer:

Resistance of the second wire is twice the first wire.

Explanation:

Let us first see the formula of resistance;

R = pxL/A

Here L is the lenght of the wire, A the area and p is the resistivity of wire.

As we are given that the length of second wire is double than that of the first wire, hence the resistance of second wire would be double.

Since we have two loop in second case, inducing double voltage but as resistance is doubled so the current would remain same according to ohms law

I = V/R

6 0

3 years ago

Read 2 more answers

you are asked to calculate an object's velocity, in order to do so you must know the object's direction and speed. distance and

Anna11 [10]

You are asked to calculate an object's velocity.

In order to do so, you must know the object's speed and the direction

in which it's moving, or you must have other information that makes it

possible for you to calculate its speed and direction.

6 0

3 years ago

Read 2 more answers

An nfl linebacker can go from 0 m/s to 2.5 m/s in 2.5s. What is his acceleration?

dybincka [34]

Answer:

a= 1 m/s^2

Explanation:

a= (Vf-Vi)/t

a=(2.5m/s - 0m/s)/2.5 s

a=2.5 m/s / 2.5 s

a= 1 m/s^2

5 0

3 years ago