المساعد الشخصي الرقمي

مشاهدة النسخة كاملة : أسئلة كيميائية ...فيزيائية ..منوعة أحتاج لحلها



أينشتاينية
07-31-2009, 06:12 AM
السلام عليكم ورحمة الله وبركاته وبعد .....
بعد خجل ورفض توصلت لقرار أن انزل هذه الأسئلة في منتداي الغالي آمل منكم مساعدتي في حلها ...
الأسئلة بالإنجلش مع انني ملمة باللغة إلا أن هناك اسئلة استوقفتني ....:o:o


والآن أدعكم مع الأسئلة عبارة عن ///
Marks: 1 A neutral atom of 57Fe differs from one of 56Fe because it has:
Choose one answer. a. one more electron.
b. one more proton.
c. one more neutron.
d. choices A. and B.
e. choices A. and C.
..Question
Marks: 1 During this interaction, one participant benefits while the other is unaffected.
Choose one answer. a. Mutualism
b. Commensalism
c. predator-prey/parasite-host
d. Ammensalism
..Question
Marks: 1 A block is pushed by a constant force, at constant velocity, on a horizontal surface with friction. In this process:

Choose one answer. a. mechanical energy is converted to electrical energy.
b. mechanical energy is converted to heat.
c. mechanical energy is conserved.
d. heat is transferred from the block to the surface.
e. no work is done on the block.
..Question
Marks: 1 Compared to the reactants, the products of nuclear fission

Choose one answer. a. are more massive
b. have the same mass
c. are less massive
d. have a higher atomic number
e. have more electric charge
..Question
Marks: 1 Team working has negative features, like
Choose one answer. a. Peer pressures
b. Community dissatisfaction
c. Values paradox
d. Informal disciplines
..Question
Marks: 1 In redox reactions, when an atom loses electrons it is _______, and when it gains electrons it is _____________.

Choose one answer. a. an acid, a base
b. an anion, a cation
c. oxidized, reduced
d. reduced, oxidized
e. decomposed, synthesized
..Question
Marks: 1 Which of the following ways can flowering plants pollinate?
Choose one answer. a. wind
b. birds
c. mammals and insects
d. all of the above ý
..Question
Marks: 1 Wuzu has --------- Farz.
<!--[endif]-->
Choose one answer. a. 2
b. 4
c. 6
d. 5
..Question
Marks: 1 Things …………………. a lot since 1950
Choose one answer. a. have changed
b. changed
c. had changed
d. are changing&yacute;
..Question
Marks: 1 How many years are there in a Millenium ?Choose one answer. a. 100 years
b. 1000 years
c. 10000 years
..Question
Marks: 1 Pick the answer that correctly completes this statement: Each carbon atom on the benzene ring overlaps with a carbon atom on either side. This is a special bonding arrangement in which

Choose one answer. a. the p orbitals on the carbon atoms overlap each other; each carbon in the ring is sp2-hybridized, with the six ?-electrons delocalized over the entire ring.
b. s orbitals overlap each other to form ?-bonds.
c. each carbon atom forms a single ?-bond with another carbon atom.
d. the benzene ring resonates or alternates between two forms, with the double bonds switching between different carbon atoms thousands of times a second, and alternating with single bonds, making each bond equal to one and one-half bonds in strength on average.
e. each carbon atom forms a single ?-bond with another carbon atom.
..Question
Marks: 1 A passenger drops a ball out the window of a moving car. If air resistance is neglected, the trajectory of the ball seen by the passenger is a

Choose one answer. a. parabola
b. straight line
c. hyperbola
d. circle
e. A., or C., depending on the speed of the car.
..Question
Marks: 1 This man is suffering from AIDS. He has to be……………………
Choose one answer. a. stopped
b. isolated
c. delayed
d. intermingled&yacute;
..Question
Marks: 1 Skills needed for teamwork
Choose one answer. a. Technical proficiency&yacute;
b. Con****ual knowledge&yacute;
c. Listening to other people’s ideas
d. Healthy relationships between members
..Question
Marks: 1 Igneous rocks are rocks that

Choose one answer. a. formed only from molten silicates.
b. formed at temperatures above 1000oC
c. originated below the crust of the earth.
d. are associated only with volcanic activity.
e. are layered at the bottom of a body of water.
..Question
Marks: 1 Rocks weather because they are

Choose one answer. a. exposed to carbon dioxide
b. oxidized by oxygen dissolved in water
c. not stable in the presence of water.
d. not at equilibrium with their environment
e. constantly covered by water
..Question
Marks: 1 Major team role is
Choose one answer. a. Coach
b. President
c. Head of the department
d. Coordinator
..Question
Marks: 1 Yesterday morning, I ……………… on the beach&yacute;
Choose one answer. a. lied
b. lay
c. lie
d. &yacute;’m going to lie&yacute;
..Question
Marks: 1 A pendulum consists of a 1-kg mass at the end of a 1-m string. The length of a pendulum and the mass are both doubled. The period of the pendulum:

Choose one answer. a. is cut in half.
b. doubles
c. remains the same
d. increases by about 40%
e. decreases by about 40%
..Question
Marks: 1 For small amplitudes, the period of a pendulum depends on the

Choose one answer. a. mass
b. length
c. density of the mass
d. shape of the mass
e. A. and B
..Question
Marks: 1 What are the 3 basic organs of a plant?
Choose one answer. a. gametes, sporoes, and microspores&yacute;
b. gametes, spores, and macrospores
c. stems, roots, and leaves&yacute;
d. stems, leaves, and sporophytes
..Question
Marks: 1 An atomic nucleus generally contains all but the following:

Choose one answer. a. neutrons
b. protons
c. quarks
d. electrons
e. C. and D.
..Question
Marks: 1 This particular part of a flower functions to protect an unopened flower bud.
Choose one answer. a. Stamen
b. Pistil
c. Carpel
d. None of the above
..Question
Marks: 1 In a molecule of methane, the hydrogen and other atoms are arranged

Choose one answer. a. as a tetrahedron with a hydrogen atom at each of the four vertices (corners) and the single nitrogen atom at the center.
b. as a tetrahedron with a hydrogen atom at each of the four vertices (corners) and the single carbon atom at the center.
c. with two carbon atoms tied directly to each other with a triple covalent bond, with a single hydrogen atom attached to each carbon.
d. with all the atoms and bonds lying in one plane (planar), forming a diamond-shaped configuration with the single carbon atom in the center.
e. as a tetrahedron with a carbon atom at one vertex and a hydrogen atom at each of the other three corners.
..Question
Marks: 1 A charged particle is brought close to an isolated, neutral, conducting sphere. The force between the particle and the sphere is

Choose one answer. a. zero
b. attractive
c. repulsive
d. attractive for positive charge; repulsive for negative charge.
e. inversely proportional to the distance between them.
..Question
Marks: 1 The human cells contain the following except
Choose one answer. a. Nucleus
b. Chloroplast
c. Mitochondria
d. Golgi Apparatus
..Question
Marks: 1 All the electrons in an atom are not in the same orbital because:

Choose one answer. a. the electrons repel one another.
b. of the Pauli Exclusion Principle.
c. of the Bohr Repulsion Effect.
d. of the Heisenberg Uncertainty Principle.
e. the attraction by the nucleus is too weak.
..Question
Marks: 1 The following statements regarding Van der Waals forces are correct except
Choose one answer. a. London dispersion forces does not contribute to the attractive &yacute;intermolecular forces between the molecules
b. Van der Waals attractions operate only over a limited interatomic &yacute;distance
c. Van der Waals attractions are an effective bonding interactions at &yacute;physiological temperature only
d. Only b and c are true
..Question
Marks: 1 Most deep-sea sediment is deposited by

Choose one answer. a. rivers
b. glaciers
c. ocean currents
d. lakes
e. microscopic organisms
..Question
Marks: 1 Teamwork refers to effective projects when
Choose one answer. a. A satellite project comes succeeded at ends
b. A football club becomes league champion&yacute;
c. People can cooperatively work together
d. Group of people get good sustainable results
..Question
Marks: 1 The sky is clear but I think it …………………at night
Choose one answer. a. is going to rain
b. will rain
c. is raining&yacute;
d. rains
..Question
Marks: 1 The umbra of a sunspot is approximately

Choose one answer. a. half the temperature of the photosphere.
b. double the temperature of the photosphere.
c. four times the temperature of the photosphere.
d. eight times the temperature of the photosphere.
e. the same temperature as the photosphere.
..Question
Marks: 1 We have to encourage individuals to defend their ideas, that
Choose one answer. a. Becomes possible through questioning&yacute;
b. Is achievable via listening &yacute;
c. Is the persuading skills
d. Reflects helping coworkers
..Question
Marks: 1 A primary cause of convection currents is the

Choose one answer. a. earth’s rotation
b. occurrence of earthquakes
c. breaking of chemical bonds
d. difference in the density of earth materials
e. lunar tides
..Question
Marks: 1 A monochromatic light shines on a ****l surface. If the wavelength of the light is increased, the electrons are emitted from the ****l

Choose one answer. a. at a higher rate.
b. at a lower rate
c. with more energy
d. with less energy
e. None of the above
..Question
Marks: 1 In order for two waves to make a standing wave interference, they must:

Choose one answer. a. be traveling in opposite directions.
b. be traveling in the same direction.
c. have the same frequency.
d. choices A. and C.
e. choices B. and C.
..Question
Marks: 1 Participation in teamwork means
Choose one answer. a. Sharing something in common with others
b. Encouraging members to do their best
c. Joining with others in activities
d. Getting some benefit from the performance of a certain asset
..Question
Marks: 1 Prophet Mohammed earliest job was:Choose one answer. a. Shepherd
b. Merchant
c. Warrior
d. Farmer
..Question
Marks: 1 Handheld computers which use a small pen rather than a keyboard and can be used for storing and retrieving information
Choose one answer. a. PDA
b. Palmtop
c. Laptop
d. Mainframe
..Question
Marks: 1 The _______ computer is much powerful and very expensive compared to a PC


Choose one answer. a. Palmtop
b. Laptop
c. Networked PC
d. Mainframe
..Question
Marks: 1 A positron

Choose one answer. a. has the same mass as a proton.
b. is an anti-electron.
c. has the same electron charge as a proton.
d. A. and C.
e. B. and C.
..Question
Marks: 1 Any organized team comprises&yacute;
Choose one answer. a. Many group of people&yacute;
b. Singing band
c. Football club
d. Individuals linked in a common purpose&yacute;
..Question
Marks: 1 When an ideal gas expands without exchanging heat with its surroundings:

Choose one answer. a. it does work on its surroundings.
b. it cools.
c. its internal energy decreases.
d. the number of molecules remains constant.
e. all of the above
..Question
Marks: 1 How do Anarctic icefish survive in freezing water?

Choose one answer. a. Special antifreeze chemicals in their blood
b. Extra layers of fat which earned them the nickname "Puffy Fish"
c. Constant high level of motion to keep blood circulating
..Question
Marks: 1 What is another term for the number of organisms in a given unit area?
Choose one answer. a. Population
b. Ecology
c. Demography
d. Density
..Question
Marks: 1 How much ……………..it cost? It cost 20 pounds.
Choose one answer. a. does
b. did &yacute;
c. do
d. will
..Question
Marks: 1 A ball rolls, without slipping, down an inclined plane. A block of ice begins sliding, without friction, at the same time down a plane of equal length and inclination. The ball:

Choose one answer. a. reaches the bottom first.
b. reaches the bottom at the same time as the ice.
c. reaches the bottom after the ice.
d. reaches the bottom first only if it is heavier.
e. reaches the bottom first only if it is lighter
اتمنى من كل قلبي أن تحلوا مااستطعتم منها ....
تحيــــاتي

mohammed med
07-31-2009, 01:52 PM
السؤال الثالث :- b
reactants are more massive than products
A pendulum consists of a 1-kg mass at the end of a 1-m string. The length of a pendulum and the mass are both doubled.
The period of the pendulum increases by about 40%
For small amplitudes, the period of a pendulum depends on the length
A monochromatic light shines on a ****l surface. If the wavelength of the light is increased, the electrons are emitted from the ****l with less energy
a psoitrin is an anti-electron

أينشتاينية
07-31-2009, 07:35 PM
أشكر لك حسن التعاون اخي وانتظر المزيد من الحل ....

بلوتونيوم
08-01-2009, 10:15 AM
السلام عليكم أختي آينشتاينية،

يا ليت لو ترتبين الاسئلة ، حاولت اجاوب لكن تلخبطت ، الاسئلة حلوة.

.....

happydreams
08-02-2009, 09:47 AM
السلام عليكم اينشتانية

1- c

2- b

3- b

4-c

6-c

جاوبت قدر المستطاع والله اعلم اولا واخيرا

حاولى ترتيب الاسئلة وترقيمها بشكل افضل كما قال بلوتونيوم ، حتى نستطيع مساعدتك فى البقيه

تحياتى لك اختى ــــــــــــ

أينشتاينية
08-19-2009, 02:56 AM
الأخ بلوتونيوم والأخت احلام ....
شكرا للمساعدة ..جزاكم الله ألف خير ...
حاولت تعديل المشاركة ولكن لم اجد أيقونة التعديل ,,,
تحيـــاتي