Description : You watch your friend rub a balloon on their sweater and then stick it to the wall. To investigate, you set up an experiment to test what happens with other objects. What's the test variable in your experiment?
Last Answer : Answer: When you put the balloon on the wall after you rubbed it on the sweater. the balloon would either stick to the wall or repel from the walldepending on what kind of electrons there are on the sweater
Description : How can you set up an experiment to measure the rate at which ice cube melts by using ice cube graph paper and petri dish?
Last Answer : (this isnt really an answer) im doing my chemistry homework and i see this question and its due soon...help I'm a 7th grader
Description : What is The set of all possible outcomes in a probability experiment is the?
Last Answer : It is the outcome space.
Description : Being alive and dead at the same time - Why are some animal activists outraged by Schroedinger's cat experiment?
Last Answer : It’s customary to have a question in the deets too. Who the fuck is going to get mad at a game of pretend? Unless, this is some sort of riddle, I’m not getting…
Description : Which one of the following is responsible for the working of New-ton's colour disc experiment? (1) Formation of pure spectra (2) Formation of impure spectra (3) Persistence of vision (4) Principle of complementary colour
Last Answer : (3) Persistence of vision Explanation: A Newton Disc can be created by painting a disc with the seven different colours. A combination of red, green and blue in the circular disc will yield the same result. This is due to the phenomenon called persistence of vision.
Description : Who received the Nobel Prize in Physics in 1923 for his experiment which measured the charge of the electron. The experiment consisted of allowing drops of oil which had become charged to fall in an electric field.
Last Answer : ANSWER: (ROBERT ANDREWS) MILLIKAN
Description : In Rutherford's experiment involving the deflection of alpha particles by atomic nuclei, the fact that some of the alpha particles bombarding the thin gold foil were back-scattered, led to one of the ... its nucleus z) the nucleus of a gold atom occupies nearly the entire space of the atom
Last Answer : ANSWER: Y -- MOST OF THE MASS OF A GOLD ATOM IS IN ITS NUCLEUS
Description : In the Millikan oil-drop experiment the UPWARD force on the drop is due to the: w) gravitational and electric fields x) gravitational field and the charge on the drop y) electric field and the size of the drop z) electric field and the charge on the drop
Last Answer : ANSWER: Z -- ELECTRIC FIELD AND THE CHARGE ON THE DROP
Description : The Millikan experiment showed that electric charge was: w) negative x) quantized y) positive z) unmeasurable
Last Answer : ANSWER: X -- QUANTIZED
Description : Davisson and Germer scattered electrons from a crystal of nickel. The scattered electrons formed a strong diffraction pattern. What important conclusion was drawn from this experiment?
Last Answer : ANSWER: ELECTRONS ACTED LIKE WAVES
Description : Which one of the following is responsible for the working of Newton’s colour disc experiment ? (1) Formation of pure spectra (2) Formation of impure spectra (3) Persistence of vision (4) Principle of complementary colour
Last Answer : Persistence of vision
Description : How to structure a physics experiment write up?
Last Answer : 1. Introduction 2. Procedure, Materials 3. Results 4. Discussion 5. Conclusion
Description : What do scientists write after an experiment which summerizes their experiment and results?
Last Answer : Need Answer
Description : Name the type of plants obtained by Carl Correns experiment and write the phenotype ratio.
Last Answer : Carl Correns selected Four ‘O clock plant with red flowers and white flowers. In the F1 generation he obtained all pink flowers. In the F2 generation he obtained red, pink and white flowers in the ratio 1:2:1.
Description : 45.4 L of nitrogen reacted with 22.7 L of oxygen and 45.4 L of nitrogen oxide was formed. The reaction is given below: 2N2(g) + O2(g) →2N2O(g) Which law is being obeyed in this experiment? Write the statement of this law.
Last Answer : Ans. Gay lussac’s law of gaseous volume is being obeyed. According to gay lussac’s law of gaseous volumes, gases combine or are produced in a chemical reaction in a simple ration by volume, provided that all gases are the same temperature and pressure.
Description : Who proved the Abiogenesis wrong and when? OR Write a note on Redi Experiment?
Last Answer : In 1668, an Italian scientist F. Redi performed experiments to disprove the abiogenesis. Redi's Experiment: i) He took two sets of four bottles each. ii) In first set, he put dead snakes ... are responsible. viii) He stated that maggots were the larvae, produced from the eggs of visited flies.
Description : Write any two precautions while performing the pH experiment?
Last Answer : Answer. Wash the dropper with water after each use or use new dropper for different samples. Keep the pH paper away from chemicals while doing the experiment.