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Maurinko [17]
3 years ago
14

you ride your bike for a distance of 30km. you travel ata a speed of 0.75km/minute.how many minutes does it take

Physics
2 answers:
PilotLPTM [1.2K]3 years ago
8 0

                 (30 km) x (1 minute / 0.75 km)

             =  (30 x 1 / 0.75)  (km/minute)

             =       40 minutes .

The math is correct, but I wonder about the real world.
I don't know much about competitive biking, but you've got
this dude pumping along at almost  25 mph for 40 minutes
solid.   Is this realistic ?

mihalych1998 [28]3 years ago
7 0
Distance for which the bike is ridden = 30 km
Speed at which the bike is driven = 0.75 km/minute
Let us assume the number of minutes taken to travel the distance of 30 km = x
Now we already know the formula of speed can be written as
Speed = Distance traveled/ Time taken
0.75 = 30/x
0.75x = 30
x = 30/0.75
  = 40 minutes
So the time taken for riding a distance of 30 km will be 40 minutes. I hope this procedure is simple enough for you to understand.
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Answer:

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Explanation:

This is an optical exercise, where the constructor equation should be used

        1 / f = 1 / p + 1 / q

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A) The cocal distance is framed with the relationship

       1 / f = (n₂-1) (1 /R₁ -1 /R₂)

In this case we have a rod whereby the first surface is flat R1 =∞ and the second surface R2 = -4 cm, the sign is for being concave

       1 / f = (1.60 -1) (1 /∞ - 1 / (-4))

       1 / f = 0.6 / 4 = 0.15

        f = 6.67 cm

We have the distance to the object p = 24.0 cm, let's calculate

       1 / q = 1 / f - 1 / p

       1 / q = 1 / 6.67 - 1/24

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distance to the negative image is before the lens

B) the magnification of the lenses is given by

       M = h ’/ h = - q / p

        h’= - q / p h

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Explanation:

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On substituting the values of the length of the pendulum and the acceleration due to gravity at the point where the period of the pendulum is being measured, the above equation yields the value of the period of the pendulum.

Final answer:

The period of oscillation of a pendulum can be calculated using the equation,

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