Physics

a round flat metal coil has 180 turns and negligible resistance. it is connected in a series circuit with a resistor, with nothing else in the circuit. you measure that a current flows through the resistor when a magnetic field through the coil, perpendicular to its area, is changing at what is the radius of the coil?
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find the volume of the given solid. bounded by the planes z = x, y = x, x + y = 9 and z = 0
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Which is the general differential equation of wave motion is Mcq?
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Can somebody answer this
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a person standing a certain distance from twelve identical loudspeakers is hearing a sound level intensity of 120db. what sound level intensity would this person hear if six are turned off?
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calculate combustion of methane using bomb calorimeter given data about the calorimeter and water in it
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A motorbike is travelling at 3m/s, and accerlates over 3.5s to reach a speed of 10m/s What was the acceleration of the bike
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What is a sliding force called?
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a gas has a density of 2.09 g/l at 100 oc and 1 atm. what is the molar mass of the gas?
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What is the relationship between solar energy and wind energy?
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What is the maximum speed of the ejected electrons?
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Is equal to the product of wavelength and its frequency v F?
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A minimum-energy transfer orbit to an outer planet consists of putting a spacecraft on an elliptical trajectory with the departure planet corresponding to the perihelion of the ellipse, or the closest point to the Sun, and the arrival planet at the aphelion, or the farthest point from the Sun. (Assume the orbital radius of the Earth is 1.50108 m, and the orbital radius of Mars is 2.30108 m, and mass of Sun to be 2.001030kg. Calculate how long spacecraft will take to arrive at Mars.
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a string that is stretched between fixed supports separated by 75.0 cm has resonant frequencies of 420 and 315 hz, with no intermediate resonant frequencies.what are (a) the lowest resonant frequency and (b) the wave speed?
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match the following distance on the left with the maximum speed on the right group of answer choices 2 seconds [ choose ] 3 seconds [ choose ] 4 seconds [ choose ]
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this object's brightness is 2.5 times greater today than in ptolemy's time, suggesting changes in stellar evolution 100 times larger than predicted.
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Does it require more force to start an object sliding or to keep it sliding?
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A student is studying the Periodic Table. The student has been asked to place all of the nonmetals on the same side ofthe chart. The student notices that the arrangement of the Periodic Table already has the nonmetals grouped together,except one. In order to put all of the nonmetals on the same side, the student should relocate one element on the PeriodicTable. Which element should be relocated and in which direction?4x A Helium should be moved to the left on the Periodic Table,4x B4xHydrogen should be moved to the right on the Periodic Table,C Hydrogen should be moved down its family on the Periodic Table,DHelium should be moved down its family on the Periodic Table.Next
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For the different values given for the radius of curvature R and sped, rank the magnitude of the force of the roller-coaster track on the bottom of each clip. Rank from largest to smallest. To rank items as equivalent, overlap them.
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Two charged particles, q1 and q2, are located on the x-axis, with q1 at the origin and q2 initially at x1 = 13.2 mm. In this configuration, q1 exerts a repulsive force of 2.62 N on q2. Particle q2 is then moved to x2 = 17.8 mm. What is the force (magnitude and direction) that q2 exerts on q1 at this new location? (Give the magnitude in N.)
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a 900 kg van is traveling at a constant speed of 1.51 m/s due north. what is the total force (in n) on the vehicle? (assume north is the positive direction. indicate the direction with the sign of your answer.)
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Which of the following methods of sound localization between the two ears can we rely on for tones of very low frequencies? -Interaural time differences -Interaural level differences -Interaural frequency differences -Interaural echo differences More than one of the above
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a lion is running at constant speed toward a gazelle that is standing still, as shown in the top figure above. after several seconds, the gazelle notices the lion and accelerates directly toward him, hoping to pass the lion and force him to reverse direction. as the gazelle accelerates toward and past the lion, the lion changes direction and accelerates in pursuit of the gazelle. the lion and the gazelle eventually each reach constant but different speeds. which of the following sets of graphs shows a reasonable representation of the velocities of the lion and the gazelle as functions of time?
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if megans 454.5 kg car drives off a 100.0 m tall cliff with a horizontal velocity of 8.25m/s, where will the car land
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