Unit 7 Problem Set1: calculating a charge
Ocie Blackman
Charge A has a charge of +2C. Charge B has a charge of -3C and is located 1 meter to the right
of A. Charge C is located 1 meter to the right of Charge B and has a charge of -1C. If a fourth
charge (
Unit 9 Problem Set1: The Doppler Effect
Ocie Blackman
Assume that the pitch of a honking car horn is the F above middle C (f F= 349 Hz) and the
speed of sound in air
is 770 mph. How fast would a honking car need to be approaching you for you to hear a G (
Unit 2 Assignment: Newtons Laws
PH2530
Joshua Kelly
Exercises
1. When your car moves along the highway at a constant velocity, the net force on it is zero.
Why, then, do you continue running your engine?
Fnet = a * m
a=
v/
t
With no change in velocity the
Unit7
Assignment1
StaticandCurrent
Electricity
Rufus Watson
Rufus Watson
Unit 7 Assignment 1: Static and Current Electricity
PH2530
14. When a car is moved into a painting chamber, a mist of
paint is sprayed around it. When the body of the car is given
a
Rufus Watson
Unit 9 Assignment 1: Waves
PH2530
1. What is the source of wave motion? Energy generated at any point in a mechanical
medium gets transmitted in the form of waves due to simple harmonic vibrations of the
particles of the medium and this pheno
8/26/2014
Rufus Watson
Rufus Watson
Unit 10 Assignment 1: Quantum Pioneers
PH2530
Paul Dirac was a British theoretical physicist who made fundamental contributions to the
development of quantum mechanics, quantum field theory and quantum electrodynamics,
Unit8Assignment1:Magnetism
RufusWatson
8/12/2014
PH2530 Physics
Rufus Watson
Unit 8 Assignment 1: Magnetism
PH2530
20. A magnetic eld can deect a beam of electrons, but it
cannot do work on the electrons to change their speed.
Why? Because the magnetic fi
Rufus Watson
Unit 3 Assignment 1: Momentum and Energy
PH2530T Physics
Momentum and Energy
1. An ice skater is twirling in a circle with her arms extended:
a) What will happen if she brings her arms in closer to her body? She will turn faster
as the rotati
Unit 2 Problem Set 1: Newtons Second Law
Learning Objectives and Outcomes
Explain Newtons second law of motion.
Apply Newtons second law of motion to physical situations.
Use Newton's second law to determine forces acting on an object and the acceleration
Unit5
Assignment
1:Fluid
Mechanics
Physics-PH2530
Rufus Watson
Rufus Watson
Unit 5 Assignment 1: Fluid Mechanics
PH2530
3. In a deep dive, a whale is
appreciably compressed by
the pressure of the surrounding water. What happens to the whales density? Mass
2014
Rufus Watson
[UNIT 6 ASSIGNMENT 1: TEMPERATURE AND HEAT]
Rufus Watson
Unit 6 Assignment 1: Temperature and Heat
PH2530
7. The temperature of the Suns interior is about 10^7 degrees.
Does it matter whether this is degree is
Celsius or kelvins? Defend
Rufus Watson
Unit 4 Assignment 1: Projectile Motion
PH2530
13. The planet Jupiter is more than 300 times as massive as
Earth, so it might seem that a body on the surface of
Jupiter would weigh 300 times as much as it would weigh
on Earth. But it so happen
Rufus Watson
Unit 2 Assignment 1: Newtons Laws (Portfolio)
8. When your car moves along the highway at a constant
velocity, the net force on it is zero. Why, then, do you
continue running your engine? The net force zero is achieved by balance of forces: d
24 - SOLIDS AND SEMI-CONDUCTOR DEVICES
Page 1
( Answers at the end of all questions )
1)
In a common base amplifier, the phase difference between the input signal voltage and
output voltage is
(a)
(b)
/4
(c) /2
( d ) zero
[ AIEEE 2005 ]
2)
In a full wave
23 - ATOMS, MOLECULES AND NUCLEI
Page 1
( Answers at the end of all questions )
27
125
1)
If the radius of the 13Al nucleus is estimated to be 3.6 fermi, then the radius of 52Te
nucleus will be nearly
( a ) 8 fermi
( b ) 6 fermi
( c ) 5 fermi
( d ) 4 ferm
22 - ELECTRON AND PHOTONS
Page 1
( Answers at the end of all questions )
1)
A photocell is illuminated by a small source placed 1 m away. When the same source
of light is placed 1 / 2 m away, the number of electrons emitted by photocathode would
( a ) inc
20 - WAVE OPTICS
Page 1
( Answers at the end of all questions )
1)
Two point white dots are 1 mm apart on a black paper. They are viewed by eye of
pupil diameter 3 mm. Approximately, what is the maximum distance at which these dots
can be resolved by the
19 - RAY OPTICS
Page 1
( Answers at the end of all questions )
1)
A fish looking up through the water sees the outside world contained in a circular
horizon. If the refractive index of water is 4 / 3 and the fish is 12 cm below the surface,
the radius of
18 - ELECTROMAGNETIC INDUCTION AND ALTERNATING CURRENTS
( Answers at the end of all questions )
Page 1
1)
The self inductance of the motor of an electric fan is 10 H. In order to impart maximum
power at 50 Hz, it should be connected to a capacitance of
(a
PROBLEMS
18 - DYNAMICS ( APPLICATIONS OF Derivatives )
Page 1
( 1 ) A particle executing rectilinear motion travels distance x cm in t seconds where
3
2
2
x = 2t - 9t + 5t + 8. Find its velocity at a time when its acceleration is 18 cm / s .
[ Ans: 5 cm /
PROBLEMS
(1)
17 - DIFFERENTIAL EQUATIONS
Prove that y = A e
x
+ Be-
2x
2
+ x + x is a solution of
d2 y
dx 2
+
Page 1
dy
- 2y = 3 - 2x 2 ,
dx
( A, B are arbitrary constants )
2
2
2
y
Ans : log
cx
2
(2)
Solve ( x + yx ) dy + ( y - xy ) dx = 0.
(3)
1
1
+
x
16 - MAGNETIC EFFECTS OF CURRENTS
Page 1
( Answers at the end of all questions )
1)
One conducting U tube can slide inside another as
shown in the figure, maintaining electrical contacts
between
the
tubes.
The
magnetic
field
B
is
perpendicular to the plan
PROBLEMS
(1)
16 - APPLICATIONS OF INTEGRATION
Find the area of the region bounded by the circle x
2
2
Page 1
2
+ y =r.
2
[ Ans: r ]
(2)
Find the area of the region bounded by y = x
2
- 5x + 4 and X-axis.
9
Ans : 2
(3)
Find the area of the region enclose
15 - SEMICONDUCTOR ELECTRONICS:
MATERIALS, DEVICES AND SIMPLE CIRCUITS
Page 1
15.1 Introduction
The word electronics is coined from the words electron mechanics. The subject of electronics
deals with the study of devices in which specific current ( ) vers
15 - THERMAL AND CHEMICAL EFFECTS OF CURRENTS
Page 1
( Answers at the end of all questions )
1)
A heater coil is cut into two equal parts and only one part is now used in the heater.
The heat generated will now be
( a ) four times ( b ) doubled ( c ) halv
PROBLEMS
15 - DEFINITE INTEGRATION
Page 1
Obtain the following integrals as the limit of a sum:
(1)
1
2
( x + 3 ) dx
3
x
e dx
(2)
0
2
( x - 2 x ) dx
2
1
Ans:
(4)
3
(3)
Ans: e
10
3
2
log 5
x
3 dx
(5)
1
3
- e
e x dx
Ans:
b
cos x dx
(6)
a
log 2
Ans
15 - WAVES
Page 1
1)
Two wires placed to each other are vibrating in their first harmonic. The sound produced
by the two wires produce 5 beats per second. If the longer wire is 25 cm long and the
velocity of waves in wire is 50 m / s, then find length of
14 - NUCLEUS
Page 1
14.1 Nucleus - General Information
A nucleus consists of electrically neutral neutrons and positively charged protons. The
nucleus of hydrogen has only one proton and no neutrons.
The charge of proton = the charge of electron = 1.6 10
14 - PROBABILITY
Page 1
( Answers at the end of all questions )
(1)
Three houses are available in a locality. Three persons apply for the houses. Each
applies for one house without consulting others. The probability that all the three apply
for the same h
14 - OSCILLATIONS
Page 1
14.1 Periodic and Oscillatory motion
Motion of a system at regular interval of time on a definite path about a definite point is
known as a periodic motion, e.g., uniform circular motion of a particle.
To and fro motion of a syste