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Other Physics – Q&A

6 662Questions:

4 611Free Answers by our Experts:

if you dive underwater, you notice an uncomfortable presure on your eardrum due to the increased pressure. the human endrum has a pressure of 70mm2 (7.10^-5 m2) and it can sustain a force of 7N without rupturing. if your body had no means of balancing the extra pressure, what would be the maximum depth you could dive without rupturing the eardrum?

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A message signal of frequency 10 kHz and peak voltage of 10 volt is used to modulate a carrier of frequency 106 Hz and peak voltage 20 volt. Then depth of modulation is :-
(1) 0.25 (2) 0.5 (3) 1 (4) 2

Answered!

When a 2 kg mass is hung from a vertically suppported spiral spring, it stretches the spring by 10 cm. What mass must be hung on the spring if its to oscillate with a period of 1 s?
a. 4.96 kg
b. 3.47 kg
c. 1.76 kg
d. 5.44 kg

Answered!

Three coplanar vectors are expressed, with respect to a certain rectangular coordinate sysytem as
Missing argument for superscript
,
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,
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, in which the components of these vectors are given in arbitrary units. Find the vector
r⃗
which is the sum of these vectors.
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with magnitude
5√
at
3o
to the x-axis
Missing argument for superscript
with magnitude
5√
at
297o
to the x-axis
Missing argument for superscript
with magnitude
5√
at
297o
to the x-axis
Missing argument for superscript
with magnitude
5√
at
73o
to the x-axis

In Progress...

In an experiment to determine the effective mass of a spiral spring, which of the following is not required in the set of apparatus?

a. spiral spring
b. stop watch
c. slot weights
d. pendulum bob

Answered!

Which of these is NOT true about the graph of $T^{2} against h in an experiment to determine an inacessible height H using the simple pendulum?

a. the slope of the graph is negative
b. the intercept on the horizontal axis is positive
c. the value of g is obtainable from the slope of the graph
d. the intercept on the vertical axis is negative

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In a simple pendulum experiment to determine inaccessible height, $T^{2}/s^{2} was plotted on the vertical axis and h/cm on the horizontal axis. T is the period and h is the height of the pendulum bob from the floor. Which of the following gives the inacessible height H?

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An object is placed at a distance of 15cm from the following mirrors of focal length 10cm.Find the position and nature of image.a)concave b)covex

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The slope of the graph of T2 plotted on the vertical axis againnst l on the horizontal axis is used to determine the value of -----------

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Determine the error in the measurement of sine of 3005o

In Progress...
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