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3 years ago

A bicyclist travels 60.0 kilometers in 3.5 hours. What's the cyclists average speed?

Physics

2 answers:

S_A_V [24]3 years ago

8 0

Speed = (distance covered) / (time to cover the distance)

Speed = (60 km) / (3.5 hr)

Speed = (60 / 3.5) (km/hr)

<em>Speed = 17.14 km/hr</em>

Scilla [17]3 years ago

5 0

You would divide 60/3.5 which equals about 17km per hour. (i rounded)

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2 years ago

The ink drops have a mass m = 1.00×10^−11 kg each and leave the nozzle and travel horizontally toward the paper at velocity v =

luda_lava [24]

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9.98 × 10⁻⁹ C

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mass, m = 1.00 × 10⁻¹¹ kg

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3 years ago

Hooke's law describes a certain light spring of unstretched length 34.8 cm. When one end is attached to the top of a doorframe a

DaniilM [7]

Answer:

a) $k = 1343.6\,\frac{N}{m}$ , b) $l = 0.501\,m\,(50.1\,cm)$

Explanation:

a) The Hooke's law states that spring force is directly proportional to change in length. That is to say:

$F \propto \Delta l$

In this case, the force is equal to the weight of the object:

$F = m\cdot g$

$F = (8.22\,kg)\cdot (9.807\,\frac{m}{s^{2}} )$

$F = 80.614\,N$

The spring constant is:

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b) The length of the spring is:

$F = k\cdot (l-l_{o})$

$l = l_{o} + \frac{F}{k}$

$l=0.348\,m+\frac{205\,N}{1343.6\,\frac{N}{m} }$

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3 years ago

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Answer: B. helium

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3 years ago

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