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4 years ago

HEY CAN ANYONE PLS ANSWER DIS!!!!

Physics

2 answers:

vovangra [49]4 years ago

7 0

I agree you can thank him

Vika [28.1K]4 years ago

6 0

Answer:

hope this helps have a great day!

Explanation:

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A wave has a period of 2 seconds and a wavelength of 4 meters. Calculate its frequency and speed. Note: Recall that the frequenc

Angelina_Jolie [31]

Answer:

frequency = 0.5 Hz and speed = 2 m/s

Explanation:

Given that,

The period of a wave, T = 2 s

Wavelength, $\lambda=4\ m$

If f be the frequency. So,

f = 1/T

$f=\dfrac{1}{2}\\\\f=0.5\ Hz$

Speed of a wave is given by :

$v=f\lambda\\\\v=0.5\times 4\\\\v=2\ m/s$

So, the frequency of the wave is 0.5 Hz and speed is 2 m/s.

4 0

4 years ago

At a separation distance of 0.500-m, two like-charged balloons experience a repulsive force of 0.320 N. If the distance is is de

soldi70 [24.7K]

Answer:

2.9 N

Explanation:

When the separation distance, r, is 0.5 m, the electrostatic force is 0.32 N. Electrostatic force is given as:

F = (k * q1 * q2) / r²

Where F = force acting on the balloons

k = Coulombs constant

Therefore:

0.32 = (k * q1 * q2) / 0.5²

=> k * q1 * q2 = 0.32 * 0.5² ------------(1)

When the distance is decreased by 3, that is r = r/3 = 0.5/3

F = (k * q1 * q2) / (0.5/3)² ------------(2)

Putting (1) into (2):

=> F = (0.32 * 0.5²) / (0.5/3)²

F = (0.32 * 0.5² * 3²) / 0.5²

F = 2.9 N

Therefore, the force would be 2.9 N

3 0

3 years ago

7 One lb of Refrigerant 134a contained within a piston–cylinder assembly undergoes a process from a state where the temperature

julsineya [31]

Answer:

$\Delta S = S_2-S_1 = 0.08835 \frac {BTU} {Lb ^ {\circ} R}$

Explanation:

A) In order to solve the table it is necessary to consult tables A11-E and A10E for refrigerant R134-a

In this way we obtain that:

$S_1 = S_f = 0.0648 \frac {BTU} {Lb. ^ {\circ} R}$

In this way,

$S_2 = S_f + x_2 (S_g-S_f) = 0.0902 + 0.5 (0.2161-0.0902)$

$S_2 = 0.15315 \frac {BTU} {Lb ^ {\circ} R}$

In this way the entropy change is,

$\Delta S = S_2-S_1 = 0.08835 \frac {BTU} {Lb. ^ {\°} R}$

B) Whenever entropy yields a positive result, the process can be carried out adiabatically.

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3 years ago

The unit of measure for resistance is volt coulomb ohm watt ampere

Alika [10]

The ohm is the unit measure of resistance.

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magnesium ion Hg2+ formed

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