Physics Answers

A horizontal force of 200N is required to cause a 15kg block to slide up an  incline with an acceleration of . Find (a) the frictional force on the block and (b) the coefficient of friction

Find the total energy of a moving object of mass 6.3 𝑘𝑔 and momentum 11.5 × 106 𝑘𝑔𝑚𝑠 −1 . 

A matter has a body-centered cubic unit cell with a length of 330 𝑝𝑚 along an edge and a density of 8.57 𝑔 𝑐𝑚−3 . Calculate the atomic mass of the matter.

If 12𝑁 force is applied to a fluid of cross-section 5.34 𝑐𝑚2 with a shearing rate of 0.7 𝑠 −1 then find the viscosity of the fluid.

A wire of length 7 𝑚 and radius 2.37 𝑚𝑚 is stretched by a load of 12370 𝑔𝑚 and increased by 1.78% of the original length. Find the stress, strain, and Young’s modulus of the material of the wire. 

A capillary tube with an inside radius of 638 𝑛𝑚 can support a 100 𝑚𝑚 column of liquid that has a density of 820 𝑘𝑔𝑚−3 . The observed contact angle is 12.5°. Find the surface tension of the liquid for ℎ = 20 𝑐𝑚. 

The radius of a silver bar is 30 𝑐𝑚. What force is required to stretch the bar by 12.7% of its length where Young’s modulus is 𝑌 = 7.25 × 1010 𝑁𝑚−2 .

Sinusoidal waves are characterized by the upward and downward

movement of particles. In the same way, there may be times when you’re up,

and moments when you feel you’re falling. What important is that you continue

to move on and learn from these experiences. Each particle in a wave follows

the motion of its neighboring particle. What about you? Are you a good follower?

Explain through citing actual situations where you considered yourself a good

follower.

Write your conclusive observations on the result obtained from this numerical. i.e. the importance of Physics in daily life. 

Write the name of 10 materials which are P type or N type without dopping.If exist.