affect the period of oscillation of a simple pendulum. Equipment -Stand & Clamp -1 Meter Ruler -Pendulum Bob -Nylon String -Stopwatch Method 1) Determine the effect on the period (T) of the pendulum when the mass (m) of the bob is altered. Set up the pendulum with a 20 cm length of string (L) so that the bob swings near a backboard. Pull the bob 6 cm to one side (the amplitude)‚ then release it so that it swings
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1. Which of the following statements about magnetic fields is not true? | Magnetic Flux is a vector. | | Changing magnetic fields create electric fields. | | Changing electric fields create magnetic fields. | | The magnetic field cannot do work on a moving charge. | | The magnetic force on a moving charge can be zero. | 2. If you double the current through an inductor‚ the energy stored in the associated magnetic field increases by a factor of _____. | Two - wrong |
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a ΔH° Standard Enthalpy ( ΔH°) The internal energy stored in the reactants. Only changes in enthalpy can be measured. 1. When some solid barium hydroxide and solid ammonium thiosulfate were reacted together‚ the temperature of the surroundings was observed to decrease from 15 ºC to – 4 ºC. What can be deduced from this observation? A. The reaction is exothermic and ∆H is negative. B. The reaction is exothermic and ∆H is positive. C. The reaction is endothermic and ∆H is negative
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English Paper Two Tips 1. Look at past questions and use them to break down your texts for revision If you look through past paper questions‚ you’ll spot that the sorts of questions you receive will always be about generalised things. Off the top of my head‚ things like Setting‚ Character‚ Beginnings and Endings‚ Death‚ Love‚ Chronology etc. all tend to crop up with reassuring regularity. So‚ this is the way in which you should approach your texts when revising them. Remember that in the actual
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oxygen and glucose. Logically‚ one would assume that with a higher light intensity‚ a plant would gain more energy and therefore continue the process of photosynthesis at a more rapid rate. I will conduct the experiment in a room with constant temperature as to minimise the chance of other factors that might affect the rate of photosynthesis of the pondweed (Cabomba or Elodea). I will also limit the chance of a change in concentration in the water that the pondweed will be set in. Furthermore‚ the
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1. A book is at rest on a tabletop. A free-body diagram for this situation looks like this: Return to Questions Return to Info on Free-body diagrams Return to on-line Force Description List 2. A girl is suspended motionless from the ceiling by two ropes. A free-body diagram for this situation looks like this: Return to Questions Return to Info on Free-body diagrams Return to on-line Force Description List 3. An egg is free-falling from a nest in a tree. Neglect air resistance. A
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empty can and food items. 2. Fill can approximately one third full of water. 3. Weigh the can after water is in the can. 4. Take the temperature of the water in the can. 5. Place the first food item under the ring stand. 6. Set the food on fire then quickly place the can on the ring stand above the burning food. 7. Once the food has extinguished take the temperature of the water in the can. 8. Weigh the food that has been burned. 9. Pour out water that is in the can. 10. Repeat steps 2-9 for
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crushes the trash? 4. Mr. Sharlow is raising a 2000kg car on his hydraulic lift. If the area of the input piston is 9cm2‚ while the area of the output piston is 630 cm2‚ what force must be exerted on the input piston to lift the car? II. Buoyancy: -apparent loss of weight of objects ✓ Buoyant force - net upward force exerted by the fluid - causes floatation > when FB is greater than the weight of the object - constant throughout the same
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"Cut" is one of Sylvia Plath’s best confessional poems.It has been dedicated to Susan O’Neill Roe‚Plath’s nurse and a close friend during the period of her single motherhood.It is narrated by a woman who has just cut her thumb while slicing an onion.It has been written in a free verse and has ten‚four-line stanzas. The poet begins by saying‚ "What a thrill".She considers having cut her thumb to be exciting and interesting.The top part of her thumb has been cut of and a small hinge of skin is left
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UNIT IB – FAQs 1. Outline signs that could indicate to an employer that an employee has an alcohol problem. (10) The signs that could indicate to an employer that an employee has an alcohol problem 1. The specific sign such as mood changes. 2. The unusual irritability or aggressive or erratic behavior. 3. A tendency to become confused. 4. Abnormal fluctuations in concentration and energy levels. 5. Impaired job performance and hence reduced productivity. 6. A tendency to suffer an increased
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