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Scorpion4ik [409]

3 years ago

14

A circuit that has only a single path for current to flow through is best classified into which category?

2 answers:

elena55 [62]3 years ago

7 0

It's called a series circuit

pychu [463]3 years ago

6 0

Answer:

A series circuit

Explanation:

A circuit that has only a single path for current to flow through is best classified into which category?

a series circuit

an open circuit

a parallel circuit

a short circuit

Explanation:

The reason that A ( a series circuit ) is the answer is because in a series circuit, it only allows for current to flow in one single path.

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Where in the laboratory is long, unrestrained hair most likely to be a safety concern?

antiseptic1488 [7]

Probably anything concerning fire

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3 years ago

Which vector correctly indicates the direction of centripetal acceleration experienced by the car?

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Answer:

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3 years ago

A model rocket blasts off and moves upward with an acceleration of 12 m/s2 until it reaches a height of 26 m. at that height, it

Diano4ka-milaya [45]

initial acceleration of rocket is given as

a = 12 m/s^2

h = 26 m

now we can use kinematics to find its speed

$v_f^2 - v_i^2 = 2 a h$

$v_f^2 - 0 = 2 * 12*26$

$v_f = 24.98 m/s$

now after this it will be under free fall

so now again using kinematics

$v_f = 0$

at maximum height

$v_f^2 - v_i^2 = 2 a s$

$0 - 24.98^2 = 2 * (-9.8)* h$

$h = 31.8 m$

total height from the ground = 31.8 + 26 = 57.8 m

Part b)

now after reaching highest height it will fall to ground

So in order to find the speed we can use kinematics again

$v_f^2 - v_i^2 = 2 a d$

$v_f^2 - 0 = 2*9.8*57.8$

$v_f = 33.67 m/s$

Part c)

first rocket accelerate to reach height 26 meter and speed becomes 24.98 m/s

now we have

$v_f - v_i = a t$

$24.98 - 0 = 12*t_1$

$t_1 = 2.1 s$

after this it will reach to highest point and final speed becomes zero

$v_f - v_i = at$

$0 - 24.98 = -9.8 * t$

$t_2 = 2.55 s$

now from this it will fall back to ground and reach to final speed 33.67 m/s

now we have

$v_f - v_i = at$

$33.67 - 0 = 9.8 * t$

$t_3 = 3.44 s$

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<em>t = 3.44 + 2.55 + 2.1 = 8.1 s</em>

5 0

3 years ago

Beats: A policeman in a stationary car measures the speed of approaching cars by means of an ultrasonic device that emits a soun

e-lub [12.9K]

Answer:

The frequency of the beats is 43.6408 kHz

Explanation:

Given:

f = frequency = 39.6 kHz

vc = speed of the car = 35 m/s

vs = speed of the sound = 343 m/s

Question: What is the frequency of the beats, f' = ?

As the car moves towards the source, the frequency of the beats

$f'=f*(1+\frac{v_{c} }{v_{s} } )=39.6*(1+\frac{35}{343} )=43.6408kHz$

4 0

3 years ago

How does the nuclear charge relate to the energy of the 1s orbital?

nlexa [21]

Explanation:

Effective nuclear charge is defined as he net positive charge experienced by an electron in an atom. It is termed "effective" because the shielding effect of electrons prevents higher orbital electrons from experiencing the full nuclear charge of the nucleus due to the repelling effect of inner-layer electrons.

The 1s is the closest shell to the nucleus of an therefore maximum nuclear charge is experienced. The formula for effective nuclear charge is:

Zeff = Z – S

where

Z = the number of protons in the nucleus, and

S = the shielding constant, the average number of electrons between the nucleus and the electron.

Hence, the energy required to remove an electron from the 1s orbital is the strongest.

3 0

4 years ago