PHY101 Final Term by Rana Abubakar Khan

Rana Abubakar Khan

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ON FEBRUARY 22, 2018 AT 7:25PM

Q1. though they are at the same temperature. Why?

Q2. Intimal is pushing but the box does not move. What is the force of static friction shown in below figure.

Q3. Is it true to say that Centre of mass and Centre of graving are the same? either yes or no explain in each case.

Q4. Describe a few examples in which the force of friction exerted on an object is in the direction of motion of the object.

Q5. Is it possible for two objects to be in thermal equilibrium if they are not in content with each other? Explain.

Q6. Why discovers the nucleus? Write the experimental setup that’s the follows.

Q7. Wave spend in a string is a fiction of frequency, so if the wave frequency, will the wave speed increase to?

A 2000kg car is moving with a velocity of 20 m/s collides and locks with a 1500 kg car at rest a stop sign. Show the momentum is conserved. Light from sun takes approximately 8.3 min to reach the earth. during the earth is rotating with the constant speed continuously. How far is the actual direction of the sun. Do all current carrying conductors emit electromagnetic waves. If the electric field in the region of space is zero, can u conclude that there is no charge in the region. Is Heisenberg’s uncertainty principle applicable to all particle case of using thermometer to measure the temperature of the glass of water. If you hold water in a paper cup over flame, can you bring the water to boil, if then how? All objects radiate energy then why are we not able to see all the objects in the dark? If an electron and proton have same De Broglie’s wavelength, which particle has greater speed? Explain why mercury rises in Thermometer when is it put in the hot water. why is glass transparent to visible light but opaque to ultraviolet and infrared. thats all stay blessed :ansa:

today is my paper mcqs mostly uper di hvy fil se thy bt kuch new bi thy questions are following

Q1. if a120v line to asockedis limited to15a by asaftyfuse will it operate a 1200w hair dryer?

Q2. wearing a metal bracelet in a region of strong megnatic filled could be hazardous?

Q3. what is the changing in entropyof 1mol of water at0c that freez?

Q4. what is the value of relativivistismomentam of the proton??

Q5. explane the fusion reactions sun ?

Q6. if a total charge inside a surface is known but the distribution of the charg is unspecified can u use the causs?

Q7. law to find the electric field all object radiate energy?

Q8. is heisenbergs uncertainly principal a case of using a thermeter to measure the temprature of glass of water?

Q9. do you think light was wave nature and partical nature .give strong reason?

10. what potantial difference is need to stop an electron having an initial sped of 4.20*10 ras to power 5 m/s

Q11. do you agree or not that stationary charg or steady curent can produce electro megnatic waves?

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my today's paper: