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Sergeu [11.5K]
3 years ago
15

Difference between MKS system and CGS system​

Physics
1 answer:
ivolga24 [154]3 years ago
8 0

Answer:

MKS stands for Meter, Kilogram and second. In this system of unit mass is given in Kilogram, length in meter and time in second. ... CGS system stands for Centimeter- Gram- Second system. In CGS system, length is measured in centimeters mass is measured in grams and time is in seconds.

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A 49 kg pole vaulter running at 10 m/s vaults over the bar. Her speed when she is above the bar is 0.7 m/s. The acceleration of
nika2105 [10]

Answer:

Height will be 5.127 m

Explanation:

We have given mass m = 49 kg

Speed over the bar v = 10 m /sec

Acceleration due to gravity g=9.8m/sec^2

Kinetic energy on the ground =\frac{1}{2}mv^2=\frac{1}{2}\times 49\times 10^2=2450J

Potential energy on the ground =mgh=0 (as height will be zero )

Speed above the bar = 0.7 m /sec

So kinetic energy above the bar =\frac{1}{2}mv^2=\frac{1}{2}\times 49\times 0.7^2=12J

Potential energy above the bar = mgh

From energy conservation

Total kinetic energy = total potential energy

So 2450+12=0+49\times 9.8\times h

h=5.127m

7 0
3 years ago
A 4.55 nF parallel-plate capacitor contains 27.5 μJ of stored energy. By how many volts would you have to increase this potentia
aivan3 [116]

Answer:

\Delta V=V_{2}-V_{1}=45.4V

Explanation:

The energy, E, from a capacitor, with capacitance, C, and voltage V is:

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V_{1}=\sqrt{2E_{1}/C}

V_{2}=\sqrt{2E_{2}/C}

The voltage difference:

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V_{2}-V_{1}=\sqrt{2*55*10^{-6}/4.55*10^{-9}}-\sqrt{2*27.5*10^{-6}/4.55*10{-9}}=45.4V

5 0
3 years ago
The bending of light as it passes from one medium to the next is
S_A_V [24]
This is called refraction. Some common examples of refraction are a straw appearing bent or cut once it enters water in a glass.
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What is moment? Write down the law of moment.A long spanner is used to unscrew the tight nut.Why?​
vfiekz [6]

Answer:

Moment is the product of force and its perpendicular distance from a point along its line of action.

The net moments on clockwise and anticlockwise is zero at a point.

The net force applied on a spanner handle is equal to the moment of the rotation

3 0
3 years ago
You perform the Hooke's Law experiment and create a plot of Displacement vs. Force. You add a linear fit and find the following
balandron [24]

Answer: 0.192 N/m

Explanation:

Well, generally when a Hooke's Law experiment is performed the plot is in fact Force vs Displacement, being the Force (in units of Newtons) in the Y-axis and the Displacement (in units of meters) in the X-axis.

In addition, if we add a linear fit the resultant equation will be the Line equation of the form:

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3 years ago
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