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ivolga24 [154]
4 years ago
14

Which describes what happens when a wave transfers energy?

Physics
1 answer:
Fiesta28 [93]4 years ago
5 0
"Waves carry energy toward the energy source through space or through matter, and the matter moves with the energy" is the one among the following choices given in the question that <span>describes what happens when a wave transfers energy. The correct option among all the options given in the question is option "A".</span>
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A physicist comes across an open container which is filled with two liquids. Since the two liquids have different density, there
Dominik [7]

Answer:

496.57492 kg/m³

Explanation:

P_a = Atmospheric pressure = 101300 Pa

\rho_w = Density of water = 1000 kg/m^3

h_w = Height of water = 21.8 cm

h_f = Height of fluid = 30 cm

g = Acceleration due to gravity = 9.81 m/s²

\rho_f = Density of the unknown fluid

Absolute pressure at the bottom

P_{abs}=P_a+\rho_wgh_w+\rho_fgh_f\\\Rightarrow \rho_f=\frac{P_{abs}-P_a-\rho_wgh_w}{gh_f}\\\Rightarrow \rho_f=\frac{104900-101300-1000\times 9.81\times 0.218}{9.81\times 0.3}\\\Rightarrow \rho_f=496.57492\ kg/m^3

The density of the unknown fluid is 496.57492 kg/m³

6 0
3 years ago
A "biconvex" lens is one in which both surfaces of the lens bulge outwards. Suppose you had a biconvex lens with radii of curvat
madam [21]

Answer:

12 cm

Explanation:

We shall use Lens makers formula here which is as follows

\frac{1}{F} =(\mu-1) (\frac{1}{R_1} -\frac{1}{R_2})

Put μ = 1.5 , R₁ = 10 cm ,R₂ = -  15 cm ( according to sign convention )

\frac{1}{F} =(1.5-1) (\frac{1}{10} -\frac{1}{-15})

= .5 x ( 15 + 10 ) / 15 x 10

= \frac{25}{2\times10\times15}

F = 12 cm

7 0
3 years ago
What 3 things can an object with unbalanced forces do?
Keith_Richards [23]
Forces are considered balanced when all of the combined forces lead to no change in the motion of the object. For example, when a book is sitting on a table, the force of gravity is pushing downward and the normal force is pushing upward with exactly the same amount of force. Since they are equal and opposite forces, the book does not move.

Unbalanced forces exist when there are unequal forces acting upon the object, which leads to a change in the state of motion. Unbalanced forces can lead to a change in direction, a change in speed, or both a change in direction and in speed.

3 0
3 years ago
A 240 m long segment of wire is hanging between 2 transmission lines. What is the total magnetic force only (ignore gravitationa
Delvig [45]

Answer:

<em>7.2 N</em>

Explanation:

length of wire L  = 240 m

current I = 500 A

field strength B = 3 x 10^-5 T

magnetic force on a current carrying conductor F is given as

F = BILsin∅

The wires are perpendicular with field therefore sin∅ = sin 90° = 1

therefore,

F = BIL = 3 x 10^-5 X 500 X 240 = 3.6 N

<em>If the wire exists between this two transmission lines, then total magnetic force on the wire = 2 x 3.6 = 7.2 N</em>

7 0
3 years ago
How much pressure is being exerted by blood cells that are applying 375N of force over 25.5m2 of your body’s blood vessels?
astra-53 [7]

Answer:

Pressure = 14.71N/m²

Explanation:

Given the following data;

Force = 375N

Area = 25.5m²

To find the pressure;

Pressure = force/area

Pressure = 375/25.5

Pressure = 14.71N/m²

Therefore, the amount of pressure that is being exerted by blood cells is 14.71 Newton per meter square.

5 0
3 years ago
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