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A series RL circuit consists of a 30 Ω resistor

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Get college assignment help at Smashing Essays Question A series RL circuit consists of a 30 Ω resistor and a 26.5 Ω inductor. What is the magnitude of the total impedance?

The details of the three little pigs’s house:The walls are

Question The details of the three little pigs’s house:The walls are made of 10-cm thick bricks, insulated with 5 cm of fibreglass. They cover a total area of 45 m^2. The floor is thick and well insulated. The 15-m^2 roof is made out of ceramic tiles that are 2.5 cm thick and insulated with 5-cm thick fibreglass. The door is 3.5-cm thick solid wood with an area of 2.0 m^2.There are double-paned windows with a combined area of 4.0 m^2. Each window is identical, having two 3-mm thick glass panes with a 2-mm air gap between the panes.An electric heater heats the house’s interior. The pigs themselves contribute in heating via metabolic power (each pig contributes ? meta = 100 W).Before we calculate the power provided by the heater, we need to know how much heat is being transferred out through the different surfaces of the house (roof, door, windows, and walls). The table of conductivity values is given below.Assuming that each pig contributes 100 W of metabolic power, calculate the power required from the heater to maintain the inside temperature at 20∘C, when the outside temperature is 8.5∘C. Give your answer in W.

Calculate the combined R value of one layer of styrofoam,

Question Calculate the combined R value of one layer of styrofoam, 10.9 cm thick, and one layer of oak wood, 2.57 cm thick. Units are m^2K/W. I have no idea how to start problem, or what equations to use, help would be appreciated. Thanks!

I don’t know how to start this problem, or what

Question I don’t know how to start this problem, or what equations to use. The questions is: A double-pane glass window is 60 cm ×90 cm and has 3-mm window panes. The inside temperature is 300 K, while the outside temperature is 286.0518 K. If the air-filled spacing between the panes is 4.669 cm, what is the temperature difference over the outer pane? Help would be much appreciated.

A wall is built of two metals (lead and aluminum)

Question A wall is built of two metals (lead and aluminum) that are in thermal contact with each other. If the temperature difference across the lead plate is 26.62 K and the plates are 2.561 cm (lead) and 2.423 cm (aluminum) thick, what is the temperature difference across the entire wall?

1. How do the number of electrons flowing into a

Question 1.     How do the number of electrons flowing into a light bulb compare to the number of electrons flowing out of it?

A hot engine generates excess heat at a rate of

Question A hot engine generates excess heat at a rate of 7200 J per second. It has a surface temperature of 400  style=”color:rgb(117,117,117);”>°°C, while its surroundings are at 27 °°C. The engine has a surface area of 0.45 m superscript2 and an emissivity of 0.75. The engine also loses heat via a steel conduit of diameter 44 cm and length 25 cm. Assuming the temperature of the engine is stable, at what rate is heat lost to the surrounding air via convection? I have no idea how to start this question. Help would be appreciated! Thanks!

1. A light bulb connected to a 9-V battery has

Question 1.     A light bulb connected to a 9-V battery has a current of 1.5 A flowing.a.      Find the resistance of the light bulb (in ohms)b.     Find the power drawn by the light bulb (in W)

What do I do?21. FSH in male22. LH in male23.

Question What do I do?21. FSH in male22. LH in male23. FSH in female24. Sustentacular cell of testis25. ADH26 GH27. Aldosterone28. Juxtaglomerula cells29. Prolactin30. Corpus spongiosum31 ACTH32 insulin33 Estrogen34. norepinephrine

Then, working with your derived thrust-required and/or power-required curves and

Question Then, working with your derived thrust-required and/or power-required curves and table data, explain how to find various performance aspects for a Cessna 172, and provide the specific data for your example. At a minimum cover the following:

Question 1. An aluminum wing on a passenger jet is

Get college assignment help at Smashing Essays Question Question 1. An aluminum wing on a passenger jet is  style=”color:#FF0000;”>31 m long when its temperature is 15°C. At what temperature would the wing be 6 cm (0.06 m) shorter?Question 2. A machinist wishes to insert a copper rod with a diameter of 9 mm into a hole with a diameter of 8.995 mm. By how much would the machinist have to lower the temperature (in °C) of the rod to make it fit the hole?

Can i please get some help with this homework. The

Question Can i please get some help with this homework. The only one i got right was Question #1 which is why I didn’t include it. However, I have gotten everyone after it wrong. Can you please explain to me how to do each of these problems. I will be heading to bed after I post because i just got off a 12hr shift and will be heading back to work at 3pm tomorrow i will get up in the morning and review this post and most likely be asking you about some of these problem if i don’t understand how you came up with some of the answer or if i can’t follow the steps. Thank you very much for your help in advance. 2.Suppose a car travels 108 km at a speed of 40.0 m/s, and uses 1.90 gallons of gasoline. Only 30% of the gasoline goes into useful work by the force that keeps the car moving at constant speed despite friction. (The energy content of gasoline is 1.3 ✕ 108 J per gallon.)(a) What is the force exerted to keep the car moving at constant speed?   N (b) If the required force is directly proportional to speed, how many gallons will be used to drive 108 km at a speed of 28.0 m/s?   gallons3.(a) Calculate the force needed to bring a 800 kg car to rest from a speed of 85.0 km/h in a distance of 130 m (a fairly typical distance for a nonpanic stop).  N(b) Suppose instead the car hits a concrete abutment at full speed and is brought to a stop in 2.00 m. Calculate the force exerted on the car and compare it with the force found in part (a), i.e. find the ratio of the force in part(b) to the force in part(a). (force in part (b) / force in part (a))4.A car’s bumper is designed to withstand a 5.40-km/h (1.5-m/s) collision with an immovable object without damage to the body of the car. The bumper cushions the shock by absorbing the force over a distance. Calculate the magnitude of the average force on a bumper that collapses 0.255 m while bringing a 940-kg car to rest from an initial speed of 1.5 m/s.  N5.(a) How much gravitational potential energy (relative to the ground on which it is built) is stored in an Egyptian pyramid, given its mass is about 7 ✕ 109 kg and its center of mass is 31.0 m above the surrounding ground? J(b) What is the ratio of this energy to the daily food intake of a person (1.2 ✕ 107 J)? :16.In a downhill ski race surprisingly little advantage is gained by getting a running start. This is because the initial kinetic energy is small compared with the gain in gravitational potential energy even on small hills. To demonstrate this, find the final speed and the time taken for a skier who skies 60.0 m along a 30° slope neglecting friction for the following two cases. (Note that this time difference can be very significant in competitive events so it is still worthwhile to get a running start.)(a) starting from restfinal speed m/stime taken s (b) starting with an initial speed of 2.00 m/s final speed m/stime taken s7.A 6.00 ✕ 105 kg subway train is brought to a stop from a speed of 0.500 m/s in 0.600 m by a large spring bumper at the end of its track. What is the force constant k of the spring? N/m8.A 65.0 kg skier with an initial speed of 13.0 m/s coasts up a 2.50 m high rise as shown in Figure 6.23. Find his final speed at the top, given that the coefficient of friction between her skis and the snow is 0.0800. (Hint: Find the distance traveled up the incline assuming a straight-line path as shown in the figure.) m/s9.A person in good physical condition can put out 100 W of useful power for several hours at a stretch, perhaps by pedaling a mechanism that drives an electric generator. Neglecting any problems of generator efficiency and practical considerations such as resting time:(a) How many people would it take to run a 3.00 kW electric clothes dryer? people(b) How many people would it take to replace a large electric power plant that generates 500 MW? people10.(a) What is the efficiency of an out-of-condition professor who does 2.30 ✕ 105 J of useful work while metabolizing 510 kcal of food energy? % (b) How many food calories would a well-conditioned athlete metabolize in doing the same work with an efficiency of 15%?  kcal ATTACHMENT PREVIEW Download attachment figure 6-23.gif

What is Newton’s First Law of Motion?

Question What is Newton’s First Law of Motion?

A uniform magnetic field points upward, in the plane of

Question A uniform magnetic field points upward, in the plane of the paper. A wire is perpendicular to the paper. When the wire carries a uniform current, the net magnetic field at point 2 is zero.A.   What is the direction of the current in the wire—into or out of the paper? Explain.B.    Point 3 is twice as far from the wire as point 2. If the net magnetic field at point 3 is  T, how much current is flowing in the wire?C.    Point 1 is the same distance from the wire as point 2. What is the net magnetic field strength at point 1? ATTACHMENT PREVIEW Download attachment Picture1.png

A. In the figure, the orientation of the transmission axis

Question A.   In the figure, the orientation of the transmission axis for each of three polarizing sheets is labeled relative to the vertical direction. The orientations of the middle and right-most polarizer are  and . An unpolarized beam of light is incident on the first polarizer with an intensity of . The intensity of the beam after it has passed through the three polarizing sheets is . Find a possible value for , the orientation of the left-most polarization filter. ATTACHMENT PREVIEW Download attachment Picture2.png

A magnetic dipole with area A, carrying current I, lies

Question A magnetic dipole with area A, carrying current I, lies in the xy-plane, and has a magnetic dipole moment which points in the z-direction. A small N-turn could of radius r and resistance R rests parallel to the xy-plane a distance  above the center of the magnetic dipole. At time , the small coil begins moving in the z-direction with speed v.Find an expression for the current induced in the small coil in terms of fundamental constants, time ‘t,’ and the quantities given, you can assume the magnetic field through the small coil is everywhere the on-axis field of the magnetic dipole.Verify the units of your result.

A long, hollow, cylindrical shell has a current flowing uniformly

Question A long, hollow, cylindrical shell has a current flowing uniformly down its length. The shell has outer radius 4 mm. At a point 3 mm from the axis of the cylindrical shell, the magnetic field strength is measured to be 5/9 of the magnetic field strength at the outer radius. Find the inner radius of the shell.

Question 

124 55 Cs has a half-life of 30.8 s. If

Question 124 55 Cs has a half-life of 30.8 s. If we have 8.3 μg initially, how many Cs nuclei are present? How many nuclei are present 2.6 min later? What is the activity at this time? After how much time will the activity drop to less than about 1 per second?

What is the maximum kinetic energy of an electron emitted

Question What is the maximum kinetic energy of an electron emitted in the β decay of a free neutron?

Calculate the total binding energy, and the binding energy per

Question Calculate the total binding energy, and the binding energy per nucleon, for 7 3 Li. The masses of the atoms of 7 3 Li and 1 1 H are 7.016004 u and 1.007825 u, respectively. The mass of a neutron is 1.008665 u.Calculate the total binding energy, and the binding energy per nucleon, for 195 78 Pt. The mass of the atom is 194.964774 u.

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