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3 years ago

38. You are fishing and catch a fish with a mass of

Physics

1 answer:

adoni [48]3 years ago

6 0

Answer:

1.7333333m/s²

Explanation:

Tension of the line = the weight + force from pulling up the fish

30N = mg + ma

30 = (6)(9.8) + (6)a

10.4 = 6a

∴ a = 1.7333333m/s²

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Two loudspeakers emit sound waves along the x-axis. The sound has maximum intensity when the speakers are 15 cm apart. The sound

sineoko [7]

Answer:

100 cm

Explanation:

It is given that there are two loudspeakers that produces $\text{sound waves }$ along x-axis.

The maximum intensity of the sound is $\text{when the speakers are}$ at a distance of = 15 cm apart.

The sound intensity becomes zero when the separation between the speakers are increased and becomes 65 cm.

Therefore, the sound waves are in the phase, $\Delta x_1=15 \ cm$

The sound waves are out of phase when $\Delta x_2=65 \ cm$

Therefore,

$\Delta x_2 - \Delta x_1 = \frac{\lambda}{2}$

$\lambda= 2(\Delta x_2 - \Delta x_1)$

= 2 (65 - 15)

= 2 x 50

= 100 cm

Hence the wavelength of the sound is 100 cm.

5 0

3 years ago

Plzzzz helppp

timofeeve [1]

There is a low correlation between the independent and dependent variables. Something we are not considering is probably causing the changes in the dependent variable.

6 0

3 years ago

The dimensions of a cylinder are changing, but the height is always equal to the diameter of the base of the cylinder. If the he

VashaNatasha [74]

Answer:

dV/dt = 9 cubic inches per second

Explanation:

Let the height of the cylinder is h

Diameter of cylinder = height of the cylinder = h

Radius of cylinder, r = h/2

dh/dt = 3 inches /s

Volume of cylinder is given by

$V = \pi r^{2}h$

put r = h/2 so,

$V = \pi \frac{h^{3}}{4}$

Differentiate both sides with respect to t.

$\frac{dV}{dt}=\frac{3h^{2}}{4}\times \frac{dh}{dt}$

Substitute the values, h = 2 inches, dh/dt = 3 inches / s

$\frac{dV}{dt}=\frac{3\times 2\times 2}{4}\times 3$

dV/dt = 9 cubic inches per second

Thus, the volume of cylinder increases by the rate of 9 cubic inches per second.

6 0

3 years ago

A basketball is thrown upwards. The height f(t), in feet, of the basketball at time t, in seconds, is given by the following fun

snow_lady [41]

The correct answer would be 1.375 < t < 3 i hope this helps anyone

8 0

3 years ago

Read 2 more answers

A descent vehicle landing on the moon has a vertical velocity toward the surface of the moon of 29.6 m/s. At the same time, it h

inessss [21]

If the vertical component is 29.6 m/s down, and the horizontal component
is 54.8 m/s parallel to the surface, then the magnitude of the slanty vector is

√(29.6² + 54.8²) = √(876.16 + 3003.04) = √3879.2 = 62.28 m/s .

That's 139 mph ! Wow !

6 0

3 years ago