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Helen [10]
2 years ago
7

Please solve the given problem

Physics
1 answer:
Vikentia [17]2 years ago
5 0

Answer:

F = M a     is Newton"s Second Law

W = M g is the weight of the mass  (W = 2 kg * 10 m/s) = 20 Newtons

g provides a downward acceleration of 10 m/s^2

F = M a = (12 - 10) m/s^2 * 2 kg = 4 kg m/s^2

The example that you gave shows both accelerations in the same direction which is not correct. your example would show the reading on a scale, if the person was on a scale - 10 m/s^2 + 2 m/s^2 = 12 m/s^2 which is offset by the person's weight of 10 m/s^2 in the other direction.

Draw a diagram showing the forces acting on mass M and the resulting acceleration a.

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svetlana [45]
Johannes Kepler is the answer
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4 years ago
Theoretically, what would be the mass of an object accelerated<br> to 100% the speed of light?
Sergio [31]

I know most of the answers will say infinity, but still this needs deeper look about its physical meaning and does it consider a practical logic?

Infinity usually used for something we could not measure, however the reality may be different!

5 0
3 years ago
Read 2 more answers
a sports car accelerates from a standing start to 65 mi\h in 4.61s how far can it travel in that time
igor_vitrenko [27]

The car can travel 220.27 ft in 4.61 s of time.

Given that a sports car accelerates from a standing start to 65 mi/hr.

So the initial velocity = 0 ft/s

The final velocity = 65 mi/hr.

We convert the final velocity from mi/hr. to ft/s.

1 mi/hr = 5280/3600 ft/s

          = 1.47 ft/s

Therefore final velocity = 65 x 1.47 = 95.55 ft/s

The time taken by the car = 4.61 s

Now the average acceleration of the car = final velocity - initial velocity / time taken = 95.55 - 0/ 4.61 s = 20.73 ft/s^2

The displacement of the car , s= ut +\frac{1}{2} at^2 ,

where u is the initial velocity of the car, t, the time taken by the car and a, the average acceleration.

So, displacement = 0 x 4.61 + 1/2 x 20.73 x 4.61^2

                             = 220.27 ft

Hence the distance travelled by the sports car in 4.61s is 220.27 ft.

Learn more about the displacement at brainly.com/question/17006213

#SPJ4

3 0
2 years ago
A solid conducting sphere with radius R = 0.390 m carries a net charge of +0.650 nC.
Tom [10]

Answer:

38.5 N/C

Explanation:

The electric field generated by a charged sphere at a point outside the sphere is equivalent to the electric field generated by a single point charge, and it is given by

E=k\frac{Q}{r^2}

where

k=9\cdot 10^9 Nm^2C^{-2} is the Coulomb's constant

Q is the net charge

r is the distance from the centre of the sphere

In this problem, we have

Q=+0.650 nC=0.65\cdot 10^{-9}C

r=0.390 m

Substituting into the equation, we find

E=(9\cdot 10^9)\frac{(0.65\cdot 10^{-9}C)}{(0.390m)^2}=38.5 N/C

6 0
3 years ago
Help please, i am lost.
AURORKA [14]

Answer:

nas wr hdrtuendnetyje because

Explanation:

4 0
3 years ago
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