The magnitude of the sum of the frictional forces acting on the bike and its rider is 400N.
<h3>What is friction force?</h3>
The friction force is the opposing force which acts on the object which is in relative motion.
The driving force is equal and opposite to the friction force acting between road and bicycle.
Friction force = 400N
The friction force between rider and bike is zero.
So the magnitude of sum of friction force = 400N +0 = 400N
Thus, the magnitude of the sum of the frictional forces acting on the bike and its rider.
Learn more about friction force.
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Answer:
The mass will be "8.86 lb".
Explanation:
The given values are:
Force
= 70,000 mi/h
Speed
= 7900 mi/h
On applying the Law of momentum, we get
⇒ ![V_{1}m_{1}=V_{2}m_{2}](https://tex.z-dn.net/?f=V_%7B1%7Dm_%7B1%7D%3DV_%7B2%7Dm_%7B2%7D)
On putting the estimated values, we get
⇒ ![70000 = 7900\times mass \ of \ deepspace \ 1](https://tex.z-dn.net/?f=70000%20%3D%207900%5Ctimes%20mass%20%5C%20of%20%5C%20deepspace%20%5C%201)
⇒ ![mass \ of \ deepspace \ 1 = \frac{70000}{7900}](https://tex.z-dn.net/?f=mass%20%5C%20of%20%5C%20deepspace%20%5C%201%20%3D%20%5Cfrac%7B70000%7D%7B7900%7D)
⇒ ![=8.86 \ lb](https://tex.z-dn.net/?f=%3D8.86%20%5C%20lb)
In smaller bodies, like your backyard swimming pool, or your own body, the differences of the earth's gravitational force over such small volumes are so slight as to have negligible affect. ... Therefore the tidal bulges move north and south with respect to earth's geography over the course of a year.
Power is work over time.
![P= \frac{W}{t}](https://tex.z-dn.net/?f=P%3D%20%5Cfrac%7BW%7D%7Bt%7D%20)
We can solve for work by using F*d
![W=F*d = (6.500N)(10m) = 65 J](https://tex.z-dn.net/?f=W%3DF%2Ad%20%3D%20%286.500N%29%2810m%29%20%3D%2065%20J)
Now solve for power:
Iron filings sprinkled near a magnet arrange themselves into pattern that illustrate the Magnetic fields. Magnetic fields are both about illustrate electric currents and magnetic materials. That's the reason why the iron filings arranges themselves into pattern when sprinkled near a magnet.