Physics

The current theory of the structure of theEarth, called plate tectonics, tells us that thecontinents are in constant motion.Assume that the North American continentcan be represented by a slab of rock 5500 kmon a side and 34 km deep and that the rockhas an average mass density of 2830 kg/m3.The continent is moving at the rate of about2.4 cm/year
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If the mass of the bar is 50kg, and Shelbi exerts 550N of force, what is the acceleration of the bar?
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can anyone please help me answer this question the assignment will close in 30 mins please help me quick
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What is the wavelength answer?
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heather and jerry are standing on a bridge 51 m above a river. heather throws a rock straight down with a speed of 17 m/s . jerry, at exactly the same instant of time, throws a rock straight up with the same speed. ignore air resistance. part a how much time elapses between the first splash and the second splash? express your answer to two significant figures and include the appropriate units.
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What percent remains after 2 half-lives?
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1. Two projectiles are thrown from the same point with the same velocity of 50 ms. The first is projected Making at an angle of with the horizontal and the second with an angular of (90-). if the second is found to rise 25m higher than the first.A. calculate the highest to which each will rise .B. calculate and compare their range .C. which one reaches the ground first
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What are the 4 types of reinforcement?
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The _____ the activation energy, or the _____ the temperature, the larger the fraction of sufficiently energetic collisions, the greater the value of k, and the greater the reaction rate.
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how many neutrinos per second should be incident on every square meter of the earth from this process? this huge number is indicative of how rarely a neutrino interacts, since large detectors observe very few per day.
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A 0.22-kg ball on a stick is whirled on a vertical circle at a constant speed. when the ball is at the three o'clock position, the stick's tension is 16 n. find the tension in the stick when the ball is (a) at the twelve o'clock and (b) at the six o'clock positions.
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The wave oscillation period is 0.5 minutes. Find the length of this wave if its speed is 54 km/h
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A bullet of mass 0.01kg is fired with velocity of [230,0]m/s in to a sack of sand of mass 9.99kg which is swinging from rope. At the moment the bullet hits, the sack has a velocity of [0,0.2]m/s. Workout the velocity of bullet of the sack.
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13. Which statement BEST describes one of the differences between the Wechsler tests and the older Stanford-Binet tests?Wechsler tests provides scores on seven different types of intelligence; Stanford-Binet tests did not.Wechsler tests distinguishes between general and specific intelligence; Stanford-Binet tests did not.OWechsler tests musical ability as well as general intelligence; Stanford-Binet tests did not.Wechsler tests removed the concept of mental age that was part of the Stanford-Binet tests.
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What do you understand by the term "Eigen function and Eigen value" in quantum mechanics. Give an example each.
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someone pls help me solve this problem thank you!
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At what value of x does f have a discontinuity due to a vertical asymptote? give a reason for your answer.
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a 200 g steel ball a hangs on a 1.0 m long string. the ball a is pulled sideways so that the string is at a 45-degree angle, then released. at the very bottom of its swing, the ball strikes a 500 g steel paperweight b that is resting on a frictionless table. to what angle does the ball rebound?
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What is reinforcement in Psychology?
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Give an example of each of the following energy conversions/transformations:a. Electrical to heatb. Chemical to heatc. Electrical to mechanicalPlease respond in 12 complete sentences for each item using your best grammar.
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F= 10k F2 12k F3 = 18k Problems analytical solutions using force components. check graphically 2.9 three members of a truss frame into a steel gusset plate as shown. all forces are concurrent at point o. determine the resultant of the three forces that must be carried by the gusset plate.
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The general driving forces behind most chemical interactions is the need for atoms to be electrically neutral and to: O donate Hydrogen ions O complete their nucleus O donate Hydroxyl ions O complete their outer electron orbital area (shell)
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how would you rearrange the ideal gas equation to calculate the pressure of a gas multiply p by v divide nrt by v multiply nrt by v divide v by nrt multiply pv by rt
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What is the name for this timeboxed iteration?
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