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Hard Questions
Basic Science
General Knowledge
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SI unit of potential energy?
Hard
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How many feet are in a football field that is 100 yards?
Hard
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What is the unit of viscosity? Please explain.
Hard
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On a scale drawing,
$1/4$
inch
$=1$
foot. What are the dimensions on the scale drawing for a room that is
$18$
feet by
$16$
feet?
Hard
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One year on Mercury is equal to
$87.97$
Earth days. One year on Pluto is three times the length of one Mercury year minus
$16.21$
days. How long is one year on Pluto?
Hard
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The dimensions of Planck's constant is
A
$M_{2}L_{2}T_{−1}$
B
$M_{2}LT_{−2}$
C
$ML_{2}T_{−1}$
D
$ML_{2}T_{−2}$
Hard
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Choose the correct answer from the alternatives given.
Time period is the time taken to complete one oscillation. This definition of time period is true for
A
longitudinal Wave
B
transverse Wave
C
simple Pendulum
D
All the above
Hard
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The distance
$r$
of the block at time
$t$
is :
A
$2R cos2ωt$
B
$4R (e_{2ωt}+e_{−2ωt})$
C
$2R cosωt$
D
$4R (e_{ωt}+e_{−ωt})$
Hard
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How was it determined that a parsec is
$3.26$
light years?
Hard
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All the surfaces shown in figure (12-E15) are frictionless. The mass of the car is M, that of the block is m and the spring has spring constant k. Initially, the car and the block are at rest and the spring is stretched through a length
$x_{0}$
when the system is released.
Find the time period(s) of the two simple harmonic motions.
Hard
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