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masya89 [10]
3 years ago
12

Question 9

Physics
1 answer:
MrRa [10]3 years ago
3 0

Answer: it means object initially possessed equal number of positive and negative charges.

Explanation:

Object looks uncharged when it's in neutral state. That's positive charge equals negative charge.

The moment the transfer of charges take place, one gains electron while the other loses electron.

The gainer of electron becomes negatively charged while the looser of electron becomes positively charged.

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A 1056-hertz tuning fork is sounded at the same time a piano note is struck. You hear three beats per second. What is the freque
REY [17]

Answer:

f_2 = 1053 Hz

or

f_2 = 1059 Hz

Explanation:

As we know that the beat frequency is given as

|f_1 - f_2| = f_{beat}

here we know that

f_1 = 1056 Hz

f_{beat} = 3 Hz

now we have

|1056 - f_2| = 3

now we have

1056 - f_2 = \pm 3

so we have

f_2 = 1053 Hz

or

f_2 = 1059 Hz

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4 years ago
if a bird at a constant speed going north and then turns west keeping the same speed does the momentum change
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How does a dynamo Work?
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The generator/dynamo<span> is made up of stationary magnets (stator) which create a powerful magnetic field, and a rotating magnet (rotor) which distorts and cuts through the magnetic lines of flux of the stator. When the rotor cuts through lines of magnetic flux it makes electricity.</span>
8 0
3 years ago
How many straight edges does a cube have
Lunna [17]
12 is correct

Explanation: it's a cube
6 0
3 years ago
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(c) Nail tips exert tremendous pressures when they are hit by hammers because they exert a large force over a small area. What f
ziro4ka [17]

Answer:

Force, F = 2356.19 N

Explanation:

Given that,

Diameter of the circular tip, d = 1 mm = 0.001 m

Its radius, r = 0.0005 m

Pressure created, P=3\times 10^9\ N/m^2

To find,

Force exerted on the nail.

Solution,

The pressure exerted by an object is equal to the force acting per unit area. Its formula is given by :

P=\dfrac{F}{A}

F=P\times A

F=3\times 10^9\ N/m^2\times \pi (0.0005\ m)^2

F = 2356.19 N

Therefore, the force exerted on the nail is 2356.19 N.

6 0
3 years ago
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