4 years ago

Electromagnetic induction means that moving a magnet through a loop of wire creates an electric current.

Physics

2 answers:

Stels [109]4 years ago

7 0

Answer:

false

Explanation:

MAVERICK [17]4 years ago

4 0

False. An Electromagnetic induction is the production of an electromotive force across an electrical conductor in a changing magnetic field.

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a concrete slab 20 m long and weighing 400,000 N is supported by one pillar. A 19,600 N car is parked 8 meters from one end, whe

Elden [556K]

let the distance of pillar is "r" from one end of the slab

So here net torque must be balance with respect to pillar to be in balanced state

So here we will have

$Mg(r - L/2) = mg(L/2 - 8)$

here we know that

mg = 19600 N

Mg = 400,000 N

L = 20 m

from above equation we have

$400,000(r - 10) = 19,600 (10 - 8)$

$r - 10 = 0.098$

$r = 10.098 m$

so pillar is at distance 10.098 m from one end of the slab

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3 years ago

What is the chemical formula for aluminum nitride? A) Al3 B) AlN3 C) Al3N3 D) AlN

OleMash [197]

The answer is c Ai3n3 yea that’s the right answer idk

6 0

4 years ago

Read 2 more answers

HELP 10 POINTS Which set of balloons would exhibit a greater electric force and why?

vovikov84 [41]

Answer:

The second one because there is less distance between them.

7 0

3 years ago

Determine the frequency of light whose wavelength is 4.257 x 10-7 cm

marin [14]

$v = f (wavelength)$ i don't know what symbol ya'll use for wavelength so i just put the word instead.We use the greek symbol lambda.So just plug in everything you know.
wavelength=4.257×10^-7x10^-2 and
v=speed of light = 3×10^8
So you should get f= 7.04 ×10^15Hz

7 0

3 years ago

A 0.145 kg baseball is thrown with a velocity of 25.0 m/s. How much work was done on the baseball to bring it from rest to 25.0

sergey [27]

Answer:

45.31 J

Explanation:

We are given that

Mass of baseball , m=0.145 kg

Initial velocity, u=0

Final velocity, v=25 m/s

We have to find the work done on the baseball to bring it from rest to 25 m/s

We know that

Work done = Change in kinetic energy

Work done, W= $\frac{1}{2}m(v^2-u^2)$

Using the formula

Work done, W $=\frac{1}{2}(0.145)((25)^2-0)$

Work done= $\frac{1}{2}(0.145)(625)$

Work done, W=45.31 J

Hence, the work done on the baseball to bring it from rest to 25 m/s

=45.31 J

3 0

3 years ago