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A 40-year-old puzzle of superstring theory solved by supercomputer
A group of three researchers from KEK, Shizuoka University and Osaka University has for the first time revealed the way our universe was born with 3 spatial dimensions from 10-dimensional superstring theory in which spacetime has 9 spatial directions and 1 temporal direction. This result was obtained by numerical simulation on a supercomputer.
A 40.0-L container is divided into two equal parts by a rubber membrane. One hal
A 40.0-L container is divided into two equal parts by a rubber membrane. One half of the container has 1.50 moles of an ideal monatomic gas at 250 K, and the other half is a vacuum. The container is well insulated, so there is no exchange of heat with the surroundings. The membrane breaks, and eventually the gas reaches a new equilibrium condition occupying the entire volume. What i
A 42 year old male with no major health issues to date has seen a 17 pound gain in weight over the l
You are seeing a new patient: A 42 year old male with no major health issues to date has seen a 17 pound gain in weight over the last month. He has been eating from a “fast-food” restaurant regularly and is feeling lethargic. Physical examination indicates muscle weakness. Laboratory results indicate an enlarged liver with excessive glycogen granules and high levels of fat (abnormal
A 45-kg boy drags his 15-kg sled to the top of a 15-m tall hill. He rides down the hill (with no fr
A 45-kg boy drags his 15-kg sled to the top of a 15-m tall hill. He rides down the hill (with no friction or air resistance) and then applies brakes over a level section of ground, stopping over a distance of 44 m. What is the average braking force exerted on the sled?
(1) 200 N (2) 150 N (3) 49 N (4) 590 N (5) None of these.
A 56-year-old Army officer received a smallpox vaccination at a military vaccina
A 56-year-old Army officer received a smallpox vaccination at a military vaccination clinic. Within 2 weeks, a painful ulcer was noted at the vaccination site. Because of the appearance of an increasing number of peripheral lesions and because of continued enlargement of the initial ulcer, he was treated. Eventual recovery was complicated by Pseudomonas sepsis and the need for a ski
A ball is thrown straight up from a 20.0 meter cliff at 17.5 m/s. the ball goes up and then all the ...
A ball is thrown straight up from a 20.0 meter cliff at 17.5 m/s. the ball goes up and then all the way to the ground below the cliff. Find: How high did the ball go and how fast was it going when it hit the ground? Up Down xi= &n
A balloon filled with 0.500 L of air at sea level is submerged in the water to a depth that produces
Question 1 of 12 0.0/ 4.0 Points A balloon filled with 0.500 L of air at sea level is submerged in the water to a depth that produces a pressure of 3.25 atm. What is the volume of the balloon at this depth?
A biologist is studying factors which affect population size where the percentage of individuals kil
Here it is..... hope this helps someone. Pls make sure you look at the answer key. lol... I got a 75! Question 1 of 20 5.0/ 5.0 Points A biologist is studying factors which affect population size where the percentage of individuals killed remains the same regardless of population size. What are these factors?
A black box and a white box accelerate at the same rate across the floor despite
A black box and a white box accelerate at the same rate across the floor despite the fact that the net force on the black box is three times larger than the net force on the white box. Which box has the larger mass?
A bullet exits a rifle with speed 1500 ft/s. The bullet is shot horizontally from a height of 2 m.
A bullet exits a rifle with speed 1500 ft/s. The bullet is shot horizontally from a height of 2 m. How far does the bullet travel horizontally before it hits the ground? (1 ft = 0.3 m.)
A car of mass 212kg descends a hill of slope 1 in 5. Calculate using an energy method, the average b
A car of mass 212kg descends a hill of slope 1 in 5. Calculate using an energy method, the average braking force required to bring the car to rest from 82km/h in 50m. The frictional to motion is 350N.
A car with mass of 1000 kg accelerates from 10 m/s to 40 m/s in 10 s. Ignore air resistance.
A car with mass of 1000 kg accelerates from 10 m/s to 40 m/s in 10 s. Ignore air resistance. The engine has 22% efficiency, which means that 22% of the energy released by the burning gasoline is converted into mechanical energy. What is the average mechanical power output of the engine?
(1) 7.5 x 104 W (2) 7.5 x 105 W (3) 8.0 x 104 W (4) 1
A certain engine extracts 1300 J of heat from a hot temperature reservoir and di
A certain engine extracts 1300 J of heat from a hot temperature reservoir and discharges 700 J of heat to a cold temperature reservoir. What is the efficiency of this engine? A) 46% B) 54% C) 86% D) 27% E) 13%
A certain ideal gas has a molar specific heat at constant volume Cv = 7R/5. What
A certain ideal gas has a molar specific heat at constant volume Cv = 7R/5. What is its molar specific heat at constant pressure? A) 12R/5 B) 7R/3 C) 12R/7 D) 12R/5 E) 4R
A certain number has three digits and the sum of those digits 12. When the number is divided by the
A certain number has three digits and the sum of those digits 12. When the number is divided by the number formed by the hundreds and the ones digits, the answer equals 11. In addition, the sum of the hundreds and the tens digits is 10 bigger than the ones digit. What is the number?
A community centre has five swiimming classes with 25 students in each class.
A community centre has five swimming classes with 25 students in each class. The community centre is conducting a study to assess the students’ level of satisfaction with the class. The letters A, B, C, D, and E are used to label the classes. Each student in a class is numbered from 1 to 25. For example, C11 indicates the 11th student in class C. Identify the sampling method used to
A company received a bank statement with a balance of $6,000. Reconciling items included a ...
A company received a bank statement with a balance of $6,000. Reconciling items included a bookkeeper error of $400long dash—a $400 check recorded as $500long dash—two outstanding checks totaling $800, a service charge of $20, a deposit in transit of $250, and interest revenue of $21. What is the adjusted bank balance?
A critically ill patient enters your emergency room, showing signs of septic sho
A critically ill patient enters your emergency room, exhibiting signs and symptoms of severe septic shock. In this case, should you immediately begin treatment with a broad-spectrum drug or a narrow-spectrum drug? Explain your answer and discuss any possible consequences of using either drug in the patient.
A cross was made to produce D. melanogaster flies heterozygous for two pairs of
A cross was made to produce D. melanogaster flies heterozygous for two pairs of alleles: A and a, which determine long versus short wings, and B and b, which determine gray versus ebony body color. The following F2 data were obtained: Long wing, gray body 240 Long wing, ebony body 40 Short wing, gray body 40 Short wing, ebony body 80 Test
A dental office employs three dentists and five dental hygienists. One of the de
A dental office employs three dentists and five dental hygienists. One of the dentists is a very recent dental school graduate and can't yet see patients on her own until she passes boards and obtains a license. Dentists perform all procedures personally, except for regular cleaning and x-rays, which are performed exclusively by dental hygienists. Three of the five dental hygie
A developmental psychologist who employs an interactionist model to study human development would ...
A developmental psychologist who employs an interactionist model to study human development would examine which aspects of an individual's development?
A farmer planted some bean seeds. When the seeds germinated, 196 of the seedlings...
1. A farmer planted some bean seeds. When the seeds germinated, 196 of the seedlings were albino, a recessive trait, and 2,880 were green. Determine the number of seedlings that you would expect to be carriers of the albino allele.
2. A farmer planted some bean seeds. When the seeds germinated, 193 of the seedlings were albino, a recessive trait, and 2,740 were green. Det
A federal statute prohibits federally licensed firearms dealers from selling han
A federal statute prohibits federally licensed firearms dealers from selling handguns to persons under age of 21. An organization advocating for gun ownership and individual gun owners brings an action against the Bureau of Alcohol, Firearms, Tobacco, and Explosives arguing that the statute violates the Second and Fifth Amendments. Discuss which equal protection standard of review t
A few doubts regarding Heart (Atrial) Embryology...
HI GUYS
1. What is the developmental significance of both the Atrial appendages, i.e. what is the reason for their presence? What I mean is, is it just to increase its volume as man has more oxygen and nutritional requirements all of a sudden in the developmental tree or what?
2. Why does septum spurium develop at all? It anyways is incorporat
A figure skater is in a position where he spins once in 1.8 seconds. If he pulls his arms and legs
A figure skater is in a position where he spins once in 1.8 seconds. If he pulls his arms and legs in so that his rotational inertia is reduced by one half, how long does it take for him to spin one time?
(1) 0.90 s (2) 3.6 s (3) 1.8 s (4) 2.7 s (5) None of these.
A food-oriented retailer wishes to compile a list of 50 key nonfood items (in terms of sales, ...
A food-oriented retailer wishes to compile a list of 50 key nonfood items (in terms of sales, inventory turnover, and profitability). Outline internal secondary data sources for this problem.
A gas expands at constant temperature from an initial volume of 0.040 m3 and an
A gas expands at constant temperature from an initial volume of 0.040 m3 and an initial pressure of 210 kPa until its pressure drops to 135 kPa. How much work is done by the system? A) 3.0 kJ B) 3.7 kJ C) 4.1 kJ D) 5.6 kJ E) 7.9 kJ
A gas expands from an initial volume of 0.040 m3 and an initial pressure of 210
A gas expands from an initial volume of 0.040 m3 and an initial pressure of 210 kPa to a final volume of 0.065 m3 while its temperature is kept constant. How much work is done by the system? A) 3.7 kJ B) 4.1 kJ C) 5.3 kJ D) 5.6 kJ E) 7.9 kJ
A gas expands from an initial volume of 0.040 m3 to a final volume of 0.085 m3 w
A gas expands from an initial volume of 0.040 m3 to a final volume of 0.085 m3 while its pressure increases linearly with the volume (so that the process follows a straight-line path in a P-V diagram) from 110 kPa to 225 kPa. How much work is done by the system? A) 5.2 kJ B) 7.5 kJ C) 7.8 kJ D) 11 kJ E) 12 kJ
