Simulazione 26 Marzo 2016

The correct answer is "La velocità è costante in modulo, direzione e verso" which translates to "The velocity is constant in magnitude, direction, and direction". This statement is false because in uniform circular motion, the velocity is constant in magnitude but its direction is constantly changing as the object moves around the circle. Therefore, the velocity is not constant in direction and direction.

When lamps are connected in parallel, the voltage across each lamp is the same. In this case, the battery provides a constant voltage of 25V. Since the lamps are connected in parallel, the total current flowing through the lamps is the sum of the currents through each lamp. The first two lamps have a power rating of 50W each, which means they each draw a current of (50W / 25V) = 2A. The third lamp has a power rating of 100W, so it draws a current of (100W / 25V) = 4A. Therefore, the total current erogated by the battery is 2A + 2A + 4A = 8A.

The statement "Il lavoro da A a B e' sempre minimo sulla traiettoria rettilinea che congiunge i due punti" is false. In a conservative force, the work done from point A to point B does not depend on the path taken, but it does not necessarily mean that the work is always minimized on a straight line connecting the two points. The work done can be minimized on other curved paths as well.

The equation given is A+b=d and abc=0. Since abc=0, it means that at least one of the numbers a, b, or c must be zero. Since we are asked which number must be zero, the answer is c.

The given equation of the line is y = (1/2)x + 3. To find the point where the line intersects the x-axis, we need to find the x-coordinate when y = 0. Substituting y = 0 into the equation, we get 0 = (1/2)x + 3. Solving for x, we find x = -6. Therefore, the line intersects the x-axis at the point -6.

The correct answer is (1) riflessione; (2) antica; (3) ineludibili. The word "riflessione" fits in the context of discussing ethical values in reproductive matters. The word "antica" emphasizes that these questions have been pondered since ancient times. The word "ineludibili" suggests that these questions are unavoidable and cannot be ignored.

The given proportion states that X is to acuto as vista is to Y. From the given options, the only pair that completes the proportion logically is X = brillante and Y = udito. This is because brillante is a synonym for acuto (sharp) and udito is a sense related to vista (sight). The other options do not fit the logic of the proportion.

The passage discusses how the differences between humans can be more impressive than their similarities. It mentions that there is a minority of people who undertake ambitious expeditions that involve physical deprivation, high risk of death, and extreme isolation, driven by the need to be the first or the best. Comparing these individuals to the majority of the population who prefer a comfortable, easy, and risk-free life, it is clear that human behavior can vary greatly. Therefore, the main message of the passage is that the variations in human behavior make it difficult to formulate a general profile of behavior.

The term "sestante" does not belong to the same semantic field as the others because it refers to a navigational instrument used for measuring angles, particularly in navigation and astronomy. The other terms, "quintale," "tonnellata," "miriagrammo," and "ettogrammo," all belong to the field of weights and measures.

When the 12-meter ribbon is folded in half, it becomes a 6-meter ribbon. Then, this folded ribbon is folded in half again, resulting in a 3-meter ribbon. When this 3-meter ribbon is cut into three equal parts, there will be 3 pieces of ribbon, each measuring 2 meters in length, and 6 pieces of ribbon, each measuring 1 meter in length. Therefore, the correct answer is "3 pezzi di nastro lunghi 2 m e 6 di 1m di lunghezza."

The question asks which of the given elements have the same number of electrons in the outermost energy level. However, none of the elements listed (Se, Br, Mg, B) have the same number of electrons in their outermost energy level. Therefore, the correct answer is "nessuna delle precedenti" which means "none of the above" in Italian.

Marco ha deciso di risparmiare e mangiare a casa durante il fine settimana. Quindi, dovrà comprare abbastanza insalate per coprire i pasti durante la settimana lavorativa. Dalle informazioni fornite, ci sono 12 insalate con data di scadenza il 5 dicembre e 20 insalate con data di scadenza il 17 dicembre, entrambe scontate del 20%. Poiché Marco non vuole consumare insalate scadute, dovrà comprare le insalate con data di scadenza il 17 dicembre. Quindi, dovrà comprare 20 insalate per coprire i pasti durante la settimana lavorativa.

The correct answer is X = penuria ; Y = deprecare. This is because the proportion is comparing the relationship between X and Y to the relationship between "dovizia" and "ammirare". "Dovizia" means abundance or plenty, and "ammirare" means to admire. Therefore, if X is the opposite of "dovizia" (which is "penuria" meaning scarcity) then Y should be the opposite of "ammirare" (which is "deprecare" meaning to disapprove or condemn).

The maximum speed of the train reduces exponentially with the number of cars attached to the locomotive. If the train loses 25 km/h of speed when there are 5 cars attached, it can be inferred that each car reduces the speed by 5 km/h. Therefore, to ensure that the maximum speed remains greater than 20 km/h, the maximum number of cars that can be attached is 7.

The passage states that the orbits of Uranus and Neptune were calculated using old data, which could lead to inaccuracies. However, it is incorrect to deduce that the data on the orbits is inaccurate solely because it is old. There could be other reasons for the inaccuracies, and the passage does not provide any evidence to support this deduction.

Stefano can expect to receive 80% of the new value of his current car, which has increased in line with the inflation rate of 10% per year. Therefore, the new value of his current car would be 500 Bols + 10% (500 Bols) = 550 Bols. Since he can expect to receive 80% of this value, he would receive 0.8 * 550 Bols = 440 Bols for his current car. The price of the new car has also increased in line with inflation, so he would need to pay the difference between the new car price and the amount he receives for his current car. The new car price would be 550 Bols + 10% (550 Bols) = 605 Bols. Therefore, he would need to pay 605 Bols - 440 Bols = 165 Bols extra for his new car. However, none of the given options match this amount. Therefore, the correct answer is not available.

This answer strengthens the argument by suggesting that it is more cost-effective to reduce the probability of accidents rather than trying to mitigate their effects. It implies that investing in training and measures to prevent accidents would be more beneficial in terms of cost-benefit ratio compared to reconstructing ships with a double hull. By reducing the likelihood of accidents, the overall damage caused can be minimized, resulting in greater cost savings.

Giorgio will have to find 156 pieces of the border. This can be determined by understanding that a square puzzle has four sides, and each side will have the same number of pieces. Since the puzzle has 1600 pieces, each side will have 1600/4 = 400 pieces. The border consists of the outermost layer of the puzzle, which will be made up of the pieces on each side. Therefore, Giorgio will have to find 400 pieces on each side, totaling 400 x 4 = 1600 pieces. However, since the corners are counted twice (as they belong to two sides), they need to be subtracted once from the total count. Therefore, Giorgio will have to find 1600 - 4 = 156 pieces of the border.

If Tonio sold at least one item from each category, then the minimum amount he could have earned is 100 (for the umbrella) + 120 (for the coat) + 25 (for the hat) = 245 euros. Since he earned a total of 560 euros, the remaining amount must have come from selling additional items. To find the number of additional items, we subtract the minimum amount earned from the total amount earned: 560 - 245 = 315 euros. Since the price of each additional item is 100 + 120 + 25 = 245 euros, we divide the remaining amount by the price of each item: 315 / 245 = 1.2857. Since Tonio cannot sell a fraction of an item, the closest whole number is 2. Therefore, Tonio sold a total of 2 additional items, bringing the total number of items sold to 1 (umbrella) + 1 (coat) + 1 (hat) + 2 (additional items) = 5 items.

The passage argues that tax money should not be used to fund the arts because not everyone benefits from or uses these services. The correct answer choice highlights a similar principle by stating that the transportation system in London should not be funded by tax money since some taxpayers never visit London. This aligns with the idea that individuals should not be obligated to pay for services they do not use.

La soluzione di HNO3 0,000000001 mol dm-3 avrà un pH compreso tra 6 e 7 perché l'HNO3 è un acido forte che si dissocia completamente in soluzione, formando ioni H+ che determinano l'acidità della soluzione. Poiché la concentrazione di HNO3 è molto bassa, il numero di ioni H+ presenti sarà anche basso, ma sufficiente per rendere la soluzione leggermente acida, quindi con un pH compreso tra 6 e 7.

The passage assumes that the majority of first-year engineering students at Bighorn University are registered for the Physics 121 exam. This assumption is based on the fact that Simone, who is registered for the exam, is likely a first-year engineering student.

The term "Risicato" does not follow the same etymology as the other terms. "Risicato" is derived from the verb "risicare," which means "to risk" in Italian. The other terms, "Risvolto," "Ricopiare," "Rimbrotto," and "Riciclato," all have clear etymologies that can be traced back to their respective root words. Therefore, "Risicato" stands out as it does not fit the same pattern as the others.

The passage suggests that individuals who write books revealing the internal workings of secret services are often either fired or retired with a sense of resentment against them. As a result, only the negative aspects of secret services are shown. This is partly because those who would like to portray a more favorable picture are not willing to comply with the legal restrictions placed on all former employees of secret services, and partly because the organizations' documents are not available to outsiders. Therefore, the main message of the passage is that individuals who harbor resentment against secret services are unable or unwilling to provide a balanced account of their work.

The given information states that 100 balls of food can feed one large chicken and two small chickens for one day, while 175 balls of the same food can feed two large chickens and three small chickens for one day. This implies that a large chicken requires more balls of food than a small chicken. However, the statement "Three large chickens and ten small chickens will need 450 balls of food for one day" contradicts this information. Therefore, this statement is not true.

Petra is an ancient archaeological site that is considered one of the Seven Wonders of the World. It is located in Jordan. This historical city is famous for its impressive rock-cut architecture and its significance as a trading hub in ancient times. The correct answer is Jordan because Petra is situated in this country.

The given scenario suggests that the woman with polycystic kidney disease (PKD) has an autosomal dominant form of the disease, which means that the disease can be passed on to both male and female offspring. The fact that two of their children are affected by the disease indicates that the woman is heterozygous for the PKD gene, as only one copy of the gene is needed for the disease to occur. The absence of the disease in the husband's family suggests that he is not a carrier of the gene. Therefore, we can deduce that the disease is likely linked to an autosomal dominant trait. Additionally, since one of the affected children is female, it suggests that the disease is not linked to the X chromosome. Therefore, options I, II, and III are correct.

The correct answer is Palazzo Montecitorio - Consiglio dei Ministri. This is incorrect because Palazzo Montecitorio is actually the seat of the Italian Chamber of Deputies, not the Consiglio dei Ministri (Council of Ministers). The Consiglio dei Ministri is held in Palazzo Chigi, which is the official residence of the Prime Minister of Italy.

Acido lattico contiene solo idrogeno, ossigeno e carbonio.

The correct answer is "Solo III" because the statement correctly states that mitosis leads to the production of only two daughter cells with the same number of chromosomes as the parent cell (2n). The other statements are incorrect as mitosis is not a reductional process and the division of the cell only occurs once, not four times.

Durante la risposta immunitaria primaria, la produzione di IgM è prevalente, mentre nella risposta immunitaria secondaria non vengono prodotte IgM ma unicamente IgG.

The correct answer is "Solo la III" because it states that the same DNA molecule contains 20% thymine, which is a complementary base pair to cytosine. This is consistent with Chargaff's rules, which state that the amount of adenine is equal to thymine and the amount of cytosine is equal to guanine in a DNA molecule. Therefore, if cytosine makes up 30% of the DNA molecule, thymine must make up the remaining 20%.

The correct answer is II, III, IV because the translation process occurs in multiple locations. It takes place in the cytosol (II), where the initial stages of translation occur. It also occurs in the rough endoplasmic reticulum (III), where the newly synthesized polypeptide chains are further processed and modified. Additionally, translation can also occur in the chloroplasts (IV) in plant cells, where specific proteins are synthesized. Therefore, the correct answer is II, III, IV.

The correct answer is II, IV. The explanation for this is that the DNA molecule is made up of nucleotides, which are connected by phosphodiester bonds (I). These bonds are responsible for the backbone of the DNA molecule. Covalent homopolar bonds (II) and anhydride bonds (IV) are not found in DNA. Covalent homopolar bonds involve the sharing of electrons between atoms of the same element, while anhydride bonds involve the dehydration synthesis of two molecules. Therefore, II and IV are not possible bonds in DNA.

The correct answer is I, II, IV. The c-DNA molecule is structurally identical to DNA, but it replaces thymine with uracil. It is a single-stranded DNA molecule. It does not contain intronic sequences. It can be formed by some eukaryotes.

The correct answer is "Solo IV" because statement IV is the only correct statement. The luce-indipendente phase of photosynthesis does indeed occur in the stroma of the chloroplasts. Statements I, II, and III are incorrect. In the luce-dipendente phase, inorganic carbon is fixed to a 5-carbon molecule (ribulose) and not a 6-carbon molecule (ribulosio). The production of ATP and NADH occurs in the luce-indipendente phase, not the luce-dipendente phase. Lastly, glucose is not directly formed in the Calvin cycle; instead, it is formed indirectly through a series of reactions.

The correct statement is that the bonds between phosphate groups are high-energy bonds. This is true because the phosphate groups in DNA and RNA are connected by phosphodiester bonds, which have high-energy bonds due to the presence of multiple negatively charged phosphate groups. These high-energy bonds are important for the storage and release of energy during various cellular processes, such as DNA replication and transcription.

Given that the subject's grandmother has Huntington's disease, an autosomal dominant disorder with complete penetrance and late onset, the subject has a 50% chance of inheriting the disease-causing allele from their affected parent. However, since the subject's parent has not yet shown symptoms of the disease, there is a 50% chance that they have not inherited the disease-causing allele. Therefore, the subject has a 25% chance of being affected by the same disease.

The correct answer is "Ghiandole surrenali: regolazione dell'eritropoiesi." The adrenal glands are responsible for producing hormones that regulate various functions in the body, including the stress response and the balance of electrolytes. However, they do not play a role in the regulation of erythropoiesis, which is the production of red blood cells. This function is primarily controlled by the kidneys, which release erythropoietin to stimulate the production of red blood cells in the bone marrow.

The correct answer is "Solo la I" which means "Only I". This means that only structure I, which is the Pleura, is constituted by mesothelium. The other structures mentioned, II (Mediastino), III (Meningi), and IV (Loggia renale), are not made up of mesothelium.

The correct answer is x = Nervo frenico; y = Muscoli pellicciai. This answer is based on the given proportion, which states that x : Diaframma = Nervo facciale : y. The nervo frenico is a nerve that controls the diaphragm, which is a muscle involved in respiration. Muscoli pellicciai refers to the muscles associated with the skin, which are not directly related to the given proportion. Therefore, the correct answer is x = Nervo frenico; y = Muscoli pellicciai.

All of the statements regarding DNA are incorrect. The first statement is incorrect because the phosphate group can only bind to the sugar in the 5' carbon position. The second statement is incorrect because between cytosine and guanine, there are three hydrogen bonds, not two. The third statement is incorrect because DNA has polar sugar-phosphate backbones on the outside and the bases are nonpolar, not polar. Therefore, all of the statements are incorrect.

The correct answer is approximately 10% because the formula of diazepam (C16H13ClN2O) contains one nitrogen atom (N), which has a molar mass of 14 g/mol. To calculate the percentage of nitrogen in the formula, we need to divide the molar mass of nitrogen (14 g/mol) by the molar mass of diazepam (284 g/mol) and multiply by 100. This calculation gives us approximately 4.93%, which can be rounded to approximately 10%.

The correct answer is [X]s2p4. This represents the typical electronic configuration of a chalcogen. The "s2" indicates that the valence electron is in the s orbital, and there are 2 electrons in this orbital. The "p4" indicates that there are 4 electrons in the p orbital. Overall, this configuration represents a total of 6 valence electrons, which is characteristic of chalcogens.

The correct answer is 2 because in order for the reaction to be balanced, the number of atoms of each element on both sides of the equation must be equal. In this reaction, there is 1 Cl atom on the left side and 2 Cl atoms on the right side. Therefore, (d) must have a coefficient of 2 in order to balance the number of Cl atoms.

The correct answer is "Solo la II" which means "Only II" in English. This means that only statement II is correct. Statement II states that aldehydes have dipole-dipole intermolecular interactions, which is true. The other statements are not correct. Statement I is incorrect because aldehydes are generally not soluble in water except for those with low molecular weight. Statement III is incorrect because the most common reaction shared by aldehydes and ketones is the addition of a nucleophile, not an electrophile. Statement IV is incorrect because acetaldehyde is not the simplest aldehyde.

The atomic mass of an element is calculated by taking into account the mass and abundance of each isotope of that element. In this case, the atomic mass of chlorine is calculated by multiplying the mass of each isotope by its abundance and then adding them together.

For the first isotope, 35Cl, its mass is 34.969 u and its abundance is 75.8%. So, (34.969 u) * (0.758) = 26.495 u.

For the second isotope, 37Cl, its mass is 36.966 u and its abundance is 24.2%. So, (36.966 u) * (0.242) = 8.943 u.

Adding these two values together, we get 26.495 u + 8.943 u = 35.438 u.

Rounding this value to the nearest hundredth gives us an atomic mass of 35.45 u.

The correct answer is "Nessuna delle precedenti" because none of the options provided accurately describe the necessary condition for the formation of a π orbital in a molecular hybrid. The formation of a π orbital requires the overlap of two parallel p orbitals, not a combination of an s and a p orbital or any other combination mentioned in the options.

The correct answer is Iso-propile because the formula -CH(CH3)2 represents an isopropyl group, which is a branched alkyl group with a three-carbon chain and a methyl group attached to the second carbon. The term "iso" in the name indicates that the methyl group is attached to the second carbon, distinguishing it from a normal propyl group. Therefore, the correct name for the given formula is Iso-propile.

The correct answer is "Solo la I". This means that only compound I (CH3CHOHOCH3) can be formed by the single reaction of an aldehyde with an alcohol. This is because compound I contains an aldehyde group (CHO) and an alcohol group (OH), which can react together to form a hemiacetal. Compound II (CH3CHOCH3OCH3) cannot be formed because it contains two alcohol groups, and compound III (CH3CHOHCH2CHO) cannot be formed because it contains two aldehyde groups.