Hoo Sze Yen Form 4 Experiments Physics SPM 2008 CHAPTER 1: INTRODUCTION TO PHYSICS 1.1 PENDULUM Hypothesis: The longer the length of a simple pendulum‚ the longer the period of oscillation. Aim of the experiment: To investigate how the period of a simple pendulum varies with its length. Variables: Manipulated: The length of the pendulum‚ l Responding: The period of the pendulum‚ T Constant: The mass of the pendulum bob‚ gravitational acceleration Apparatus/Materials: Pendulum bob‚ length
Free Thermodynamics Energy Heat
creates an isolated system as it acts as a heat insulator between the cup and the surrounding. When a reaction happens bonds are created and destroyed causing energy to be released or absorbed. In a constant pressure‚ like in the coffee cup calorimeter‚ the change in energy equals to the enthalpy change of the reaction. Because enthalpy change of the reaction equals to the specific heat times the mass times the change in temperature‚ the amount of heat released or absorbed can be determined by measuring
Premium Thermodynamics Electrolyte Heat
capillary rise method. 2. To study the effect of temperature on surface tension of liquids. 3. To study the factors affecting the rate of loss of heat of a liquid. 4. To study the breaking stress of different materials of varying diameter. 5. To study the Inter conversion of potential and kinetic energy. 6. To determine the specific heat capacity of liquids. 7. To study the factors affecting the range and height of a projectile. 8. To study the factors affecting the coefficient of friction
Premium Refraction Specific heat capacity Incandescent light bulb
dollars? A) $63.54 B) $16.79 C) $4.44 Your car needs 12.00 gallons. How much will your D) $67.15 5) Determine the final temperature of a gold nugget (mass = 376 g) that starts at 398 K and loses 4.85 kJ of heat to a snowbank when it is lost. The specific heat capacity of gold is 0.128 J/g°C. A) 398 K B) 133 K C) 377 K D) 187 K E) 297 K 6) Calculate the atomic mass of gallium if gallium has 2 naturally occurring isotopes with the following masses and natural abundances:
Premium Oxygen Thermodynamics Temperature
The importance of water in Biological Systems Much of the Earths surface is comprised of water‚ as well as much of biological systems; for instance‚ the human body consists of approximately 70% of water‚ and in other biological organisms this figure could even be 95%. This largely relies on the bonding of water‚ whereby two hydrogen atoms bond to one oxygen atom; hydrogen bonding is the strongest intermolecular force due to its high polarity. Hence‚ what is the biological importance of water?
Premium Water Oxygen Organism
weight and the difference was the water mass. I placed the burner stand inside aluminum tray‚ then the beaker filled with water on top of burner stand. Measured the initial water temperature. I left the thermometer inside the beaker to measure water heat later. I started with a marshmallow. I weighted alone first the marshmallow and the fork. Later weighted both together. I subtracted the total weight of fork + marshmallow to obtain the food item weight. I lit the marshmallow and once on fire‚ I
Premium Heat Energy Thermodynamics
water plays a part in this. One method of reducing internal body heat is sweating; sweat is mostly made up of water. The structure of the water molecule means that it has very high melting and boiling points for a molecule of its nature because of the strong attraction between them. This means that a large amount of energy is needed before the molecules begin to move about and therefore change state. It is because of this high latent heat of vaporisation that water is an effective coolant; energy from
Premium Water Oxygen Plant
Introduction Specific heat is defined as the measure of the ability of a substance to change temperature. Specific heat of a substance is the heat needed to change the temperature of 1 gram of a substance once degree Celsius. The more Joules (unit of heat) needed‚ the higher the specific heat will be. The goal is to determine specific heat of a soil sample as compared to water. This difference has many ramifications regarding our climate‚ with local and global. Hypothesis I predict that after
Premium Temperature Fahrenheit Heat
Experiment to determine absolute zero using Charles’s law In this experiment you will be determining the specific heat capacity of oil using an electrical method. You will need to ensure that your write up contains the following: • Clear method (bullet points are ok) and labelled diagram include what is to be repeated and averaged. • State independent/dependent and control variable(s) • State what is to be varied and how (include range and intervals)? • What is to be measured and what with
Premium Water Specific heat capacity Thermodynamics
cashew nut before burning: 0.55 g ● After burning: 0.05 g ● Temp. increase of 200 g of water: 7.0 oC 1. Calculate the total energy released by the combustion of the cashew nut by using the water temp. increase‚ the mass of the water and specific heat capacity of water. 14.179j 2. Calculate the energy released per gram of cashew nut consumed in the
Premium Energy Heat Thermodynamics