The Achilles Tendon
The Achilles tendon, which connects the calf muscles to the heel, is the thickest and strongest tendon in the body. In extreme activities, such as sprinting, it can be subjected… Click here to read more
The Achilles tendon, which connects the calf muscles to the heel, is the thickest and strongest tendon in the body. In extreme activities, such as sprinting, it can be subjected… Click here to read more
A hoop of mass M=2 kg, and radius R=0.05 m, is rolling down an inclined plane of vertical height 1 meter, at an angle of 10° above the floor. At… Click here to read more
Charged particles passing through a bubble chamber leave tracks consisting of small hydrogen gas bubbles. These bubbles make visible the particles’ trajectories. In the diagram below, the magnetic field is… Click here to read more
AnswersA)The substrate of a MOSFET is usually connected to Source voltage unless you want to create a larger threshold voltage for opening the gate channel. Thus the correct answer… Click here to read more
Answers1) Only the x component of the vector E varies. At a boundary the planar components of the E vector need to be constant (otherwise the field would move… Click here to read more
This is a wireless electricity transfer circuit utilizing the following components.1 Transistor – BD139C1 = 470pFC2 = 1nFC3 and C5 = 4.7nFC4 and C6 = 470nF( and the coil is… Click here to read more
Radio telescopes are designed to observe 21-cm waves emitted by atomic hydrogen gas. A signal from a distant radio-emitting galaxy is found to have a wavelength that is 0.28cm longer… Click here to read more
Consider a long straight line of charge with 0.05 C/m of charge. Centered on this line of charge is a enclosing Gaussian surface that is a cylinder of radius 0.2… Click here to read more
AnswerE = U/dwhere E is the electric field, U the voltage on the capacitor, d is the distance between plates.1) If choice B, then U = constant, means E changes… Click here to read more
There is a region with a constant magnetic field 5.32T . The magnetic field is directed out of the page. A conducting rod moves with a velocity of 2.33m/s ,… Click here to read more
Determine the magnetic field (in terms of I, a, and d) at the origin due to the current loop shown in Figure P30.14 (Use $mu_0$ for µ0, $pi$ for pi,… Click here to read more
9) 9. Calculate the decay constant of element Rn ,if during twenty four hours number of atoms decreases only to 18.2%?1. $2.1*10^3 s^{-1}$ 2. $2.1*10^{-5} s^{-1}$3. $3.2*10^{-3} s^{-1}$4. $2.1*10^6 s^{-1}$5…. Click here to read more
6) Can electron jump from valence band to conducting band by light radiation, if gap band in semiconductor is equal to 0.3 eV, light wavelength lambda: 500 nm? 1- No 2.Yes 7)… Click here to read more
General relativity A to B. Calculate the rate of A’s clock (as compared to B’s clock) and the speed with B calculates A is approaching to him on the two… Click here to read more
A customer requested a 50 ohm loss-less planar line, with the restriction that the width of the strip cannot exceed 3 mm. what should the distance, ‘d’ be? However due… Click here to read more
Suppose your car uses 430 gallons of gasoline per year, with each gallon producing $1.2*10^8 J$ of energy. If you had a fusion-powered car using the reaction 2H + 3H… Click here to read more
A 0.5 m rod of a metal elongates 0.70 mm on heating from 20 to 200°C. Determine the value of the linear coefficient of thermal expansion for this material. Answer$\Delta(L)/L0… Click here to read more
Answera) the 3D object obtained by revolving the shaded area about y axis is a cone, having as basins a circle od radius r and with height hb) the general… Click here to read more
AnswerA) The problem of founding the extrema a given function is always equivalent with finding the zeros of the first derivative of the function. $f(x) = 10x – x^2$$f'(x) =… Click here to read more
Explain briefly why XL limits the amount of alternating currentExplain why XL increases with higher frequencies and more inductance. How might you use this fact in an application AnswersThe inductive… Click here to read more