Assignment 1: (Spring 2013)
PHYSICS (PHY101)
TOTAL MARKS: 30
Due Date: 07/05/2013
- To solve this assignment, you should have good command over first 10 lectures.
- Upload assignments (Microsoft word) properly through LMS, (No Assignment will be accepted through email).
- Write your ID on the top of your solution file.
- All students are directed to use the font and style of text as is used in this document.
- Don’t use colorful back grounds in your solution files.
- Use Math Type or Equation Editor etc for mathematical symbols.
- Write to the point and avoid from unnecessary explanation. Don’t copy/paste from internet or any other source.
- This is not a group assignment, it is an individual assignment so be careful and avoid copying others’ work. If some assignment is found to be copy of some other, both will be awarded zero marks. It also suggests you to keep your assignment safe from others. No excuse will be accepted by anyone if found to be copying or letting others copy.
Don’t wait for the last date to submit your assignment.
Question # 1
The energy in a light wave is transmitted through space by
a. the Successive collisions of series of electrons
b. the successive collision of series of atoms
c. electric field variations
d. electric field and magnetic field variations
e. the successive collision of series of air molecules
Also write the reason of your above selected choice as well. Marks = 3+4
Question # 2
You start on a beach. You go to the moon. You come back. You go to Hollywood. You then go to the summit of Mount Everest. Have you increased your gravitational potential energy more than if you had climbed to this summit without all the other side trips? Marks 5
Question # 3
A baseball travelling with horizontal velocity V is caught by a glove. Which of the following statement is true?
a. The ball applies a greater force to the glove than the glove applies to the ball.
b. The ball applies a greater impulse to the ball than the ball applies to the glove
c. This is an example of an elastic collision
d. The padding of the glove reduces the force of the ball on the glove
e. The padding of the glove reduces the impulse of the ball on the glove
Also write the reason of your above selected choice as well. Marks = 3+4
Question # 4
Inertia is the tendency of an object
I. Initially at rest to stay at rest
II. Initially in motion to continue moving with constant speed
III. Initially in motion to continue moving in a straight line
Which of the following is true?
a. I only
b. I & II Only
c. I & III Only
d. II & III Only
e. I ,II & III
Also write the reason of your above selected choice as well. Marks = 2+3
Question # 5
You are asked to push two wheelbarrows up a hill. One wheelbarrow is empty, and you are able to push it up the hill in one minute. The other is filled with huge rocks, and even after you push it for an hour, you cannot budge it. In which case do you do more work on the wheelbarrow, elaborate your answer?
Marks 6
……………Wish you good luck…………..
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