Physics

a natural gas pipeline is being built across new york. to handle the expected volume and pressure in one section of the pipeline, pipe 14 inch nominal od pipe made of api seamless grade br steel is to be used. the material has sy ~ ln [35.5, 5.0] ksi. it will be subjected to a pressure load of p ~ ln [1.5, 0.6] ksi. assume you can use the thin-wall pressure vessel equation given in the mechanics of materials section of feref to calculate the hoop stress
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what is the linear speed v of a unit mass located at the inner equator of such a sphere? express your answer in meters per second.
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A plane monochromatic electromagnetic wave with wavelength = 2.2 cm, propagates through a vacuum. Its magnetic field is described by B=(B_xi^+B_yj^)cos(kz+t)where Bx = 3.1 X 10-6 T, By = 3.4 X 10-6 T, and i-hat and j-hat are the unit vectors in the +x and +y directions, respectively. .1) What is f, the frequency of this wave?2) What is I, the intensity of this wave?3) What is Sz, the z-component of the Poynting vector at (x = 0, y = 0, z = 0) at t = 0?4) What is Ex, the x-component of the electric field at (x = 0, y = 0, z = 0) at t = 0?
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calculate the binding energy per nucleon of the deuterium nucleus, 21h . express your answer in megaelectronvolts per nucleon to three significant figures.
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equal forces f act on isolated bodies a and b. the mass of b is three times that of a. the magnitude of the acceleration of a is
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if a 34 n*m torque on a wheel causes angular acceleration 22.4 rad/s^2, what is hte wheel's rotational inertia?
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suppose the charge on the inner conducting sphere is 4 c, while 8 c of charge is deposited on the conducting shell. (a) Find the surface charge (in C) on the inner surface of the shell. (b) Find the surface charge (in C) on the outer surface of the shell.
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what are some examples of static electricity in everyday life
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1.Which among the following is measured using a Vernier Caliper?[A] Dimensions[B] Time[C] Sound[D] Temperature
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The work function of tungsten is 4.50 eV. Calculate the speed of the fastest electrons ejected from a tungsten surface when light whose photon energy is 5.64 eV shines on the surface (answer in km/s).
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Required Information neurons a5 action potentials that travel at In the human nervous system; signals are transmitted along traveling influx of sodium ions through the speeds of up to 45.0 m/s: (An action potential is sembrane Of & neuron;) The Signal is passed from one neuron to another by the release The Pain signal travels neurotransmitters in the synapse Suppose that someone steps On youtoe synapse to second 1 00-m-long along 1.00-m-long sensory neuron to the spinal column; across second synapse to the brain: Suppose that the synapses are each 106nm wide; neuron and across and that the action potentials travel at that it takes 0.0500 ms for the signal to cross each synapse; 45.0 mls At what average speed does the signa cross synapse? mmls
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A cylinder contains 0.100mol of an ideal monatomic gas. Initially the gas is at a pressure of 1.00105Pa and occupies a volume of 2.50103m3. A) Find the initial temperature of the gas in kelvins. B)If the gas is allowed to expand to twice the initial volume, find the final temperature (in kelvins) of the gas if the expansion is isothermal. C)Find the final pressure of the gas in this process. D)If the gas is allowed to expand to twice the initial volume, find the final temperature (in kelvins) of the gas if the expansion is isobaric. E)Find the final pressure of the gas in this process. F)If the gas is allowed to expand to twice the initial volume, find the final temperature (in kelvins) of the gas if the expansion is adiabatic. G)Find the final pressure of the gas in this process.
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When we blow air with our mouth narrow open, we feel the air cool. When the mouth is made wide open, we feel the air warm. What are the thermodynamic processes involved in these processes? Explain.
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in the method of trigonometric parallax, what happens if the object you are trying to measure the distance to is closer than you thought?
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A) find the frequency of an electromagnetic wave if its wavelength is 85.5 m. B) Find the frequency of an electromagnetic wave if its wavelength is 3.25x10^-10 m?
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convert mileage into a categorical variable called mileage_category, by assigning all cars with less than 50,000 miles to the "low_mileage" category and the rest to the "high_mileage" category.
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Carnot refrigerator A has a 26% higher coefficient of performance than Carnot refrigerator B. The temperature difference between the hot and cold reservoirs is 30% greater for B than A.If the cold-reservoir temperature for refrigerator B is 240K, what is the cold-reservoir temperature for refrigerator A? Express your answer in Kelvins.
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An automobile is traveling along a straight road heading to the southeast at 24 m/s when the driver sees a deer begin to cross the road ahead of her. She steps on the brake and brings the car to a complete stop in an elapsed time of 8.0 s. A data recording device, triggered by the sudden braking action, records the following velocities and times as the car slows. Let the positive x-axis be directed to the southeast. Plot a graph of Vy versus and find (a) the average acceleration as the car comes to a stop and (b) the instantaneous acceleration at t = 2.0 s. Vx (m/s) 24 17.3 12.0 8.7 6.0 3.5 2.0 | 0.75 0 t(s)0 1.0 2.0 3.0 4.0 5.0 6.0 7.0 8.0
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Suppose two firms are engaged in Cournot competition. The firms are identical, produce homogeneous products, and have marginal costs of $0 and no fixed cost. The firms face the following inverse demand curve:p=300(q1+q2) The best response functions for the two firms are as follows:q1=1500.5q2q2=1500.5q1What is the total quantity produced in equilibrium?
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Write an equation relating the magnetic flux through the small coil, when it is stationary and at some angle to the magnetic field, to the strength of the magnetic field.Write an equation for the magnetic field produced by the current in the Helmholtz coils, assuming the current through the Helmholtz coils varies with time as a sine function.Write an expression for the change in magnetic flux through the small coil. Combine the expressions you have written to write an expression for the time varying potential difference across the ends of the small coil at some angle to the magnetic field.
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calculate the power (energy per unit time) transported down the cables of ex. 7.13 and prob. 7.62, assuming the two conductors are held at potential difference v, and carry current i (down one and back up the other)
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during experiment 2, the subject lifts a ball with a mass m a vertical distance d1 and then lowers the ball a greater vertical distance d2. what is the net work done by gravity on the ball?
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what is the rate at which the current through a 0.35-h coil is changing if a voltage of 0.27 v is induced across the coil?
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the liquidity ratio is designed to show the percentage of you can cover with your current liquid assets. group of answer choices planned savings current expenses planned purchases current debts long-term debts
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