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hodyreva [135]
4 years ago
14

Which area of this sound wave represents a compression? A) B) C) D)

Physics
2 answers:
bekas [8.4K]4 years ago
8 0
C......................................

Evgesh-ka [11]4 years ago
4 0
'C' and 'E' are compressions.
'A' and 'D' are rarefactions.
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The parents of a new baby believe they brought the wrong child home from the hospital. Gel electrophoresis was performed using D
polet [3.4K]
Would you be able to post the gel electrophoresis results?
7 0
3 years ago
A 20.0 F capacitor initially charged to 30.0 uC is discharged through a 3.00 k resistor. How long does it take to reduce the cap
Maslowich

Answer:

t = 0.04159 s

Explanation:

when a capacitor and resister are connected in series. charge on its plates decreases exponentially

q = qo * e^{\frac{-t}{RC}}

where,

CHARGE q  =15.0 C

INITIAL CHARGE q_0 = 30.0 uc

Resistor R = 20.0 F

capacitor C  = 3.00

15 = 30* e^{\frac{- t}{(20* 10^{-6} * 3* 1000)}

t = 0.04159 s

3 0
4 years ago
The velocity of a particle traveling in a straight line is given by v = (6t - 3t²) m/s, where t is in seconds. If s = 0 when t =
qaws [65]

Answer

given,

v = (6 t - 3 t²) m/s

we know,

v = \dfrac{dx}{dt}

a = \dfrac{dv}{dt}

position of the particle

dx = v dt

integrating both side

\int dx = (6t - 3 t^2)\int dt

 x = 3 t² - t³

Position of the particle at t= 3 s

 x = 3  x 3² - 3³

 x = 0 m

now, particle’s deceleration

a = \dfrac{dv}{dt}

a = \dfrac{d}{dt}(6t - 3 t^2)

  a = 6 - 6 t

at t= 3 s

    a = 6 - 6 x 3

    a = -12 m/s²

distance traveled by the particle

  x = 3 t² - t³

at t = 0 x = 0

   t = 1 s   , x = 3 (1)² - 1³ = 2 m

   t = 2 s  ,  x = 3(2)² - 2³ = 4 m

   t = 3 s ,   x =  0 m

total distance traveled by the particle

D = distance in 0-1 s + distance in 1 -2 s + distance in 2 -3 s

D = 2 + 4 + 2 = 8 m

average speed of the particle

v_{avg} = \dfrac{distance}{time}

v_{avg} = \dfrac{8}{3}

v_{avg} =2.67\ m/s

8 0
3 years ago
In a game of tug of war, a rope is pulled by a force of 182 N to the right and by a force of 108 N to the left. Calculate the ma
Mrac [35]

Answer:

74 N to the right

Explanation:

the forces are going in opposite horizontal directions, meaning that they are directly opposing each other. this means that you can subtract the force applied in the direction that is greater from the direction that is less to get the net force for the greater direction

this means 182 N - 108 N = 74 N to the right

6 0
3 years ago
11. Block A and block B move toward each other on a level frictionless track. Block A has mass m and
Sindrei [870]

Answer:

The correct option is;

d) F, because the net force is equal to the mutual contact force between the blocks

Explanation:

The given information are

The mass of block A = m

The velocity of block A = +v

The mass of block B = 2·m

The velocity of block B = -v

Given that the two blocks collide, we have;

Initial total momentum = m × v + 2·m×(-v) = m·(v - 2·v) = -m·v

Final total momentum = m × v₁ + 2·m×v₂ = m·(v₁ + 2·v₂)

From the law of conservation of linear momentum, we have;

m·(v₁ + 2·v₂) = -m·v

v₁ + 2·v₂ = -v

Therefore, the resultant velocity of the two blocks is -v, and the direction of the block A is reversed and the resultant inertia is equivalent to the inertia of block A

Therefore;

The force exerted on block B = The force exerted on block A = The rate of change of momentum experienced by the two blocks = The mutual contact force experienced between the blocks.

5 0
3 years ago
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