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3 years ago

What statement best illustrates vibrational motion?

Physics

2 answers:

kramer3 years ago

7 0

C. a cello playing music at the concert

abruzzese [7]3 years ago

4 0

Answer:

Option C

Explanation:

Option C

Vibrational motion is best expressed among the given is a cello playing music at the concert. A cello is a music instrument it is primarily a string instrument. All its four strings are tuned in perfect fifths from low to high. All other option seem out of context. A cello is primarily an Itallian instrument its players are called Cellist.

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What is a chunk of space rock

Igoryamba

The answer to your question is,

A meteoroid.

-Mabel <3

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2 years ago

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A typical cell phone charger is rated to transfer a maximum of 1.0 Coulomb of charge per second. Calculate the maximum number of

Alexandra [31]

Answer:

The maximum no. of electrons- $2.25\times 10^{22}$

Solution:

As per the question:

Maximum rate of transfer of charge, I = 1.0 C/s

Time, t = 1.0 h = 3600 s

Rate of transfer of charge is current, I

Also,

$I = \frac{Q}{t}$

Q = ne

where

n = no. of electrons

Q = charge in coulomb

I = current

Thus

Q = It

Thus the charge flow in 1. 0 h:

$Q = 1.0\times 3600 = 3600\ C$

Maximum number of electrons, n is given by:

$n = \frac{Q}{e}$

where

e = charge on an electron = $1.6\times 10^{- 19}\ C$

Thus

$n = \frac{3600}{1.6\times 10^{- 19}} = 2.25\times 10^{22}$

3 0

3 years ago

A cement block accidentally falls from rest from the ledge of a 53.0-m-high building. When the block is 14.0 m above the ground,

katrin [286]

Answer:

0.405 seconds

Explanation:

Consider the amount of time it takes the block to fall from 53 m up to 14 m above the ground; then consider the amount of time it takes the block to fall from 53 m up to 2 m above the ground.

First, d = (1/2) gt^2 or t= ( 2 d / g)^1/2

= ( 2 × 39 / 9.8)^1/2 = 2.8212 seconds

Then, to fall from 53 down to 2 meters...

d = (1/2) gt^2 or t= ( 2 d / g)^1/2

= ( 2 * 51/ 9.8 )^1/2 = 3.2262 seconds

So the amount of time it takes for the block to fall from 14 m upto 2 m above the ground

3.2262 - 2.8212 = 0.405 seconds

this is how much time there is from when the man sees the block until it hits him. Not much time...

5 0

2 years ago

A 1 kg puck sliding on a horizontal shuffleboard court is slowed to rest by 1 point

Citrus2011 [14]

Answer:

miu = 0.31

Explanation:

The friction force is defined as the product of the normal force by the coefficient of friction.

$f=miu*N$

where:

f = friction force = 3 [N]

miu = friction coefficient

N = normal force [N]

The normal force on a horizontal surface can be calculated by means of the product of mass by gravity.

where:

m = mass = 1 [kg]

g = gravity acceleration = 9.81 [m/s²]

$N=m*g\\N=1*9.81$

$N= 9,81 [N]$

Now replacing in the equation above, we can find the friction coefficient.

$miu=3/9.81\\miu = 0.31$

4 0

3 years ago

What is the purpose of armature

ivanzaharov [21]

Answer:

In electrical engineering, an armature is the component of an electric machine which carries alternating current. ... When the machine or motor is used as a motor, this EMF opposes the armature current, and the armature converts electrical power to mechanical power in the form of torque, and transfers it via the shaft.

Explanation:

6 0

2 years ago