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zalisa [80]
3 years ago
10

How much force (in Newtons) acts on a 1700 kg car going around a

Physics
1 answer:
Daniel [21]3 years ago
5 0

Answer:

b) 4781 N

Explanation:

Because there is a redius do this question is talking about the acceleration force which= mv^2/r

so a=15^2/80=2.8125 m^2/s

so the force will be = m.a

F =1700×2.8125=4781.25 N

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How are mirror made??​
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Answer:

The modern mirror is made by silvering, or spraying a thin layer of silver or aluminum onto the back of a sheet of glass. Justus Von Leibig invented the process in 1835, but most mirrors are made today by heating aluminum in a vacuum, which then bonds to the cooler glass

Explanation:

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3 years ago
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A uniform solid disk and a uniform hoop are placed side by side at the top of an incline of height h. If they are released from
tigry1 [53]

Answer:

The disk will reach the bottom first.

Explanation:

As we know:

change in kinetic energy = change in potential energy

                                   ΔK.E = -ΔP.E

                             \frac{1}{2} mv^{2} + \frac{1}{2}Iw^{2}  = Mgh

                                Mv^{2} +I\frac{v^{2} }{R^{2} } = 2Mgh

                           v=\sqrt{\frac{2Mgh}{M+\frac{I}{R^{2} } } }

For the disk:

I=\frac{MR^{2} }{2}

For Hoop:

I=MR^{2}

Hence

Velocity for the disk:

v=\sqrt{\frac{4}{3}gh }

Velocity for the Hoop:

v=\sqrt{gh}

8 0
3 years ago
What is the force acting on a 10kg object that accelerates from 5 m/s to 20 m/s in 5s?
vitfil [10]

Answer:

Option C

Explanation:

v= u + at

20 = 5 + a(5)

15= a(5)

a= 3 m/s²

Force = mass × acceleration

= 10 × 3

= 30 N

3 0
3 years ago
The continuous flow of electrons is called ___________.
Brilliant_brown [7]
D. electrical current
4 0
3 years ago
2. A solid plastic cube of side 0.2 m is submerged in a liquid of density 0.8 hgm calculate the
kotegsom [21]

Answer:

vpg = 0.064 N

Explanation:

Upthrust = Volume of fluid displaced

upthrust liquid on the cube g=10ms−2

vpg =0.2 x 0.2 x 0.2 x0.8 x 10= 0.064N

vpg = 0.064 N

hope it helps.

3 0
3 years ago
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