Student:
(Be sure to look over all your notes and be sure to know the following things) 1. Define Temperature, thermal energy and heat.

2. A 1.00 x 10²g mass of tungsten at 100°C is placed in 2.00 x 10²g of water at 20.0°C. The mixture reaches equilibrium at 21.6°C. Calculate the specific heat of tungsten. Cw = 4180 J/kg°C

C= 171 J/kgOC
3. A certain metal has a specific heat of 400 J / kg oC. It absorbs 8000 J of thermal energy which causes its temperature to raise 10oC. How much mass of the metal is present?

M=2kg
4. How is the direction of an electric field defined?

5. What happens to the strength of an electric field when the charge on the test charge is halved?

6. What happens to the electric potential energy of a charged particle in an electric field when the particle is released and free to move?

7. A test charge experiences a force on .30N on it when it is placed in an electric field intensity of 4.5 x 10⁵ N/C. What is the magnitude of the charge?

Q= 6.7 x 10-7C
8. What is the electric field strength 20.0 cm from a point charge of 8.0 x 10⁻⁷C?

E=1.8X105 N/C
9. How much work is done to transfer 0.15C of charge through an electric potential difference of 9.0V?

W=1.35J
10. A voltmeter measures the electric potential difference between two parallel plates to be 60.0 V when the plates are separated by 3.0 cm. What is the electric field strength between the plates?

11. Describe two ways to increase the current in a circuit.

12. Sue finds a device that look like a resistor. When she connects it to a 1.5V battery, she measures only 45 x 10⁻⁶A, but when she uses a 3.0 V battery, she measures 25 x 10⁻³A. Does the device obey Ohm’s law?

NO

13. Refer to the diagram below to answer the following questions. a. What should the ammeter reading be? 1.5 A
b. What should the voltmeter reading be? 27V
c. How much power is delivered to the resistor?40.5 W
d. How much...

...
Free Fall
Rachel Shea
Physics 131 Lab, QL
Hasbrouck 210
Sept. 21, 2014
Abstract
This experiment measures the study of motion by observing the force of gravity acting solely upon an object, and also measures reaction time. If an object is in free fall, the only force acting upon it is gravity. The object used in this experiment was a golf ball that provided some acceleration when dropped. A sensor positioned underneath a table recorded the golf ball’s pattern of motion, when dropped. The main objective of performing this experiment is to measure the velocity and position of the ball to eventually find the acceleration of free fall. A computer program called, DataStudio, was used to create a graph of position vs. time and a graph of velocity vs. time. The second part of the experiment involved randomly dropping a ruler and having your partner catch it to determine reaction time.
Questions
1. The parabolic curves open upward instead of downward because of the golf balls movement over time: where it is dropped from, to where it ends up. The ball begins close to the sensor, then drops to the ground, then bounces back up closer to sensor again, therefore the bounces correspond with the bottom curves of the parabola. If the data were collected from the floor then the curve would open downward. But because the sensor graphs the position from the sensor, the curve was upwards.
2.
-4572009207500
The slope of the velocity versus time graph...

...accident such as car crash, since the momentum changes instantly, the force becomes extremely great. Impulsive force is produced during the collision and it will cause severe damage to the car, and may also injure the passengers in it. 3 The passengers’ momentum can be stopped by objects in the car such as dashboard, side door, or windshield, however, it will cause serious injuries because the force would be very great. To increase the safety of the driver and the passengers, safety devices such as seatbelts, air bags, crumple zones, and etc. are introduced. Safety devices such as seatbelts, air bags, crumple zones and etc are designed to reduce the forces on the body if there is a collision. These safety devices are mostly made based on the physics principle of force and momentum, which is
This relationship says that if momentum is transferred over a longer period of time, the force involved is less. If the force of a collision can be reduced, then the chances that someone would get hurt in an accident are lower.4 Since momentum cannot be transformed to another form of energy, it is always conserved during any collision. The change in momentum is then a fixed quantity, and to lower the force, changes have to be made in the time of the collision.5 The time required for the car to stop in a collision have to be increased so that the forces that will impact the occupant will be lower, and they will be less likely to be hurt. If the time taken for the change...

...Abstract:
The students investigated about freezing point depression and at what temperature the substance changes states. The students used the freezing point depression to find the molar mass of benzoic acid. First they heated lauric acid to determine the temperature that the freezing point of the solvent is and then compared the temperature to that of the lauric acid/ benzoic acid solution. They then took the change in temperature in order to determine the molality of the benzoic acid, which was calculated to be 1 mol/kg. Then they found the moles of benzoic acid to be 0.00805 mol. using what they found in the experiment they compared it with the 1.00 g of benzoic acid that was added to in experiment, they found that the molar mass of benzoic acid was 125.46 g/mol.
Apparatus:
Materials:
Lauric Acid
Benzoic Acid
Culture Tube With Cap
Safety Goggles
Bunsen Burner
Wire Gauze
Iron Ring
Spatula
Blank Label
Ring Stand
400-mL Beaker
Thermometer
Utility Clamp
Paper Towels
Theory:
The lab focused on molality and its relation to the temperature change of a substances freezing point depression. Students relationship found the equation delta T = K(f) x m. Students were figure out that based on the molar mass of benzoic acid added that it affected the freezing point of lauric acid. The freezing point of the solution is depressed because the molecules of the benzoic acid allowed for the bonding of the lauric acid molecules, therefore increasing the...

...Old Exam. Question Ch. 5 (Dr. Gondal Phys. 101)
T082
Q15: You stand on a spring scale on the floor of an elevator. The scale shows the highest reading when the elevator: (Ans: moves downward with decreasing speed)
Q16. A 70 N block A and a 35 N block B are connected by a string, as shown in Fig 3. If the pulley is massless and the surface is frictionless, the magnitude of the acceleration of the 35 N block is: A) 3.3 m/s2
Q17. When a 25.0 kg crate is pushed across a frictionless horizontal floor with a force of 200 N, directed 20◦ below the horizontal, the magnitude of the normal force of the floor on the crate is: A) 313 N
T081
Q15. Two masses m1 = 10 kg and m2 = 20 kg are connected by a light string and pulled across a frictionless surface by a horizontal force F = 30 N as shown in Figure 2. Find the tension in the string. (Ans: 10 N)
Q16. A 5.0-kg block and a 10-kg block are connected by a light string as shown in Figure 3. If the pulley is massless and the surface is frictionless, the magnitude of the acceleration of the 5.0 kg block is (Ans: 6.5 m/s2
Q17. A 70 kg man stands in an elevator that is moving downward at constant acceleration of 2.0 m/s2. The force exerted by the man on the elevator floor is (Ans: 546 N down)
[pic] [pic] [pic]
Fig. 3, T082 Fig. 2, T081 Fig. 3, T081
T072-Q13.Two blocks of mass m1= 24.0 kg and...

...n a deep dive, a whale is appreciably compressed by the pressure of the surrounding water. What happens to the whale’s density? The whales density increases so its not compressed by the waters pressure.
20. The relative densities of water, ice, and alcohol are 1.0,0.9, and 0.8, respectively. Do ice cubes ﬂoat higher or lower in a mixed alcoholic drink? What can you say about a cocktail in which the ice cubes lie submerged at the bottom of the glass? Ice cubes float on water and sink in alcohol because anything with less density than the liquid it’s in will always float.
22. A half-ﬁlled bucket of water is on a spring scale. Will the reading of the scale increase or remain the same if a ﬁsh is placed in the bucket? (Will your answer be different if the bucket is initially ﬁlled to the brim?) If no water flows over the bucket then the scale will read more, the original weight plus the fishes weight.
35. Would it be slightly more difﬁcult to draw soda through a straw at sea level or on top of a very high mountain? Explain. It would be more difficult to drink soda through a straw on a mountain than at sea.
43. When a steadily ﬂowing gas ﬂows from a larger-diameter pipe to a smaller-diameter pipe, what happens to (a) its speed, (b) its pressure, and (c) the spacing between its streamlines?. Pressure increases because pv=nrt spacing between streamlines still exsist, they are just crammed together to all fit through the pipe.
...

...Physics Formulas: Mechanics
Mechanics is the oldest branch of physics. Mechanics deals with all kinds and complexities of motion. It includes various techniques, which can simplify the solution of a mechanical problem. Here are some of the often required physics formulas falling in mechanics domain.
Motion in One Dimension
The physics formulas for motion in one dimension (Also called Kinematical equations of motion) are as follows. (Here 'u' is initial velocity, 'v' is final velocity, 'a' is acceleration and t is time):
* s = ut + ½ at2
* v = u + at
* v2 = u2 + 2as
* vav(Average Velocity) = (v+u)/2
Momentum, Force and Impulse
Physics Formulas for momentum, impulse and force concerning a particle moving in 3 dimensions are as follows (Here force, momentum and velocity are vectors ):
* Momentum is the product of mass and velocity of a body. Momentum is calculate using the formula: P = m (mass) x v (velocity)
* Force can defined as something which causes a change in momentum of a body. Force is given by the celebrated newton's law of motion: F = m (mass) x a (acceleration)
* Impulse is a large force applied in a very short time period. The strike of a hammer is an impulse. Impulse is given by I = m(v-u)
Pressure
Pressure is defined as force per unit area:
| | Pressure (P) = | Force (F)Force (A) | |
Density
Density is the mass contained in a body per unit...

...CREDIT VALUE: 5
LEVEL: FOUNDATION
SYNOPSIS:
This Foundation Year Physics course is designed in such a way that sufficient information is provided to enhance your knowledge and understanding of the basic concepts in Physics at the Foundation Level in the first semester. Upon completion of Physics I, you are required to carry on with the Physics II course and these courses are compulsory for the Engineering undergraduates.
Lecture : 5 hours/wk.
Tutorial : 2 hours/2wk
Laboratory Session : 2 hours/wk
COURSE MANAGEMENT
Semester: Trimester I - January 2014
Prerequisite: Physics – SPM / O-Levels
Lecture Schedule:
Lecturer Day Time Venue
Dr Beh Hoe Guan
(Coordinator)
PGS Monday 9.00 am – 11.00 am LR 08 (Block J)
Tuesday 11.00 am-1.00 pm LR 08 (Block J)
Friday 8:00 am – 9:00 am LR 08 (Block J)
Assoc. Prof. Dr Hasnah Mohd Zaid
CVE Monday 11.00 am – 1.00 pm LH2 (Block K)
Tuesday 2-00 pm-3.00 pm LH2 (Block K)
Thursday 8.00 am – 10.00 am LH1 (Block K)
Assoc. Prof. Dr Hasnah Mohd Zaid & Dr. Beh Hoe Guan
ME Monday 2.00 pm – 4.00 pm LR 01 (Block I) (Group 2),
LR07 (Block J)
(Group 1)
Wednesday 8.00am-10.00am
LR 15 (Block N)
(Group 2),
LR07 (Block J)
(Group 1)
Thursday 12.00 pm – 1.00 pm LR 10 (Block N) (Group 2),
LR07 (Block J)
(Group 1)
Prof Dr Norani Muti Mohamed
EE Monday 10.00 am – 12.00 pm LH3 (Block K)
Tuesday 11.00 am-12.00 pm LH1...