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Kay [80]
3 years ago
9

Change a speed of 72.4 miles per hour to its equivalent in meters per second.

Physics
1 answer:
4vir4ik [10]3 years ago
7 0

Answer:

Speed in meter/sec will be 32.1777 m /sec  

Explanation:

We have given speed = 72.4 miles per hour

We have to convert this speed in meter per second

We know that 1 miles = 1.6 km

So 72.4 miles = 72.4×1.6= 115.84 km

We also know that 1 km = 1000 m

So 115.84 km =115.84\times 10^3m

We know that 1 hour = 60×60 = 3600 sec

So 72.4miles/hour=\frac{72.4\times 1600m}{3600sec}=32.1777m/sec

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Answer:

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Explanation:

It is given that,

Speed of charged particle, v=8.2\times 10^3\ m/s

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The magnetic force is given by :

F=qvB\ sin\theta

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B=\dfrac{F}{qv\ sin\theta}

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3. How does Earth’s rotation affect our view of stars
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An object at rest on a flat, horizontal surface explodes into two fragments, one seven times as massive as the other. The heavie
Veronika [31]

Answer:

Explanation:

Given that,

One fragment is 7 times heavier than the other

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Since friction decelerates the masses to zero speed, we can calculate the NET work on the individual blocks and relate this quantity to the change in kinetic energy of each block

The workdone by the 7M mass is

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When N=W =mg, where m=7M

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Let distance move by the small mass be m

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-46.7 = -d

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