1. What fraction of a cobalt-60-unit beam will be attenuated by 0.5 cm of lead? (u for cobalt-60 gamma rays in lead is 66.0 m-1)

Q: spring has static equilibrium the weight is given suddenly an initial velocity of (50 cm/sec)…

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Q: 1- tind R for P=120W 4 I 4 A? %3D 2- find V for P= 64 w 4 R: 8 ?

A: given Power(P)=120 W          Current (I)=4 A formula using P=I2R, R is Resistance…

Q: The Toad foom hay del Alant on Vanies of minimum. maximum Two capacitics have 10000 KW 35006 Kw…

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Q: i need the answer quickly

A: Given for worker A, the magnitude of the force is 850 N, the angle of elevation is 30° and the…

Q: (b)Given the shown v-t diagram (1) construct a-t and s-t diagram (1I) Using diagrams, find total…

A: Given: v-t diagram

Q: 4- Two series of sound waves, the length of the first (3.5 m) and the second (3.4 m), overlapped, so…

A: Given information: The wave length of the waves: λ1=3.5 mλ2=3.4 m The beats heard per sec (nb) =…

Q: You have four metal bars. When bar 1 is placed in a line with each of the other three bars, the…

A: Bar 1 attracts all other bars but when the 4th bar is flipped, bar 1 and bar 4 repels each other.…

Q: erimentalist clai ts, a heat engim R, converts 16

A: GivenQ1=300 BtuT1=900 RW=160 BtuT2=540 R

Q: The x and y components of the acceleration of gravity (g) are:

A: Acceleration due to gravity acts directly downward direction

Q: Problem 1: (a) Derive the relation of the shortest wavelength limit of X-rays generated with the…

A: (a) X-rays are commonly produced  by accelerating electrons through a potential difference (a…

Q: The wave function for a standing wave on a string of linear mass density p = 0.2 kg/m, is given by…

A: Given, yx,t=0.05sin4πxcos60πt

Q: Two strings, A and B, have respective mass densities µA and µB respectively. The linear mass…

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Q: The block start from rest moving from A in the frictionless path. find: a) The speed at B. b) The…

A: Initial Height H = 4R Initial velocity = 0

Q: A long, straight metal rod has a radius of 6.00 em and a charge per unit length of 26.2 nCm. Find…

A: Given data: -  The radius of the straight metal rod is R = 6.00 cm. The charge per unit length is λ…

Q: the probability that a state located at the bottom of the conduction band is filled in non-…

A: For an intrinsic semiconductor, the fermi level lies exactly in the mid way of the two bands. The…

Q: A block of mass m = 18 kg is suspended by a cable of negligible mass as shown in the figure below.…

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Q: need the answer quickly

A: Consider a uniformly charged sphere of radius R having a charged q, The energy of this sphere is…

Q: A projectile is fired with an initial velocity of 400 m/s hits a cliff 2000 meter apart determine…

A: range = V0 cos(60) x t  here V0 = 400m/s time of flight is t seconds range = 2000m thus, time (t) =…

Q: sample of blood of density 1060 kg/m^3* is flowing at a velocity of 0.2 m/s through a blood vessel…

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Q: Points A (at (2, 3) m] and B [at (5, 7) m] are in a region where the electric field is uniform and…

A: The potential difference is defined as V = E→.dr→

Q: A car is approaching at a traffic light at a speed of 15 m per second When the light turns red, the…

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Q: 2. F = e²i+yj + x²yk, A. y²i2zy2j-e²k B. x²i-2y2j-e²j C. y²i-2z2j-e²k D. z²i2zy2j+e²k E.…

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Q: Q1\Given two vectors P=2ax-ay + 3a, and Q = 4ax +3ay + 3a, find 1- a unit vector perpendicular to…

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Q: A Ferris wheel with radius 14.0 m is turning about a horizontal axis through its center (the figure…

A: Given information: The radius of the Ferris wheel (r) = 14.0 m The linear speed of the passengers…

Q: The kinematic equation of a material point motion has the form x = A + Bt + Ct², where

A: The position of particle is x=A+Bt+Ct^2   =1.7+5.6t+3.1t^2

Q: 8 A particle is moving along a straight line with constant acceleration from a point A to a point B,…

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Q: 43. The pnrabolic coordinates (.n) are related to the Cartesian coordinate (x, y) by x = En and y…

A: Given: x=ξηy=ξ2-η2

Q: A toy gun fires rubber pellets (mass = 4.1 grams) at plastic targets (mass = 95 grams). A target is…

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Q: A photographer has a camera with a focal length of 75 mm, in front of which an object is moving from…

A: Given, focal length of camera is f=75 mm

Q: Q2) If the volume charge density in space is specified as -20*Epsilon_not*sqrt(y) MC/m^3;where the…

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Q: Generalised potential for a system is U (q,4)= (9+ġ)' .corresponding generalised 2 11. force is :…

A: Force on a system is defined as gradient of potential.

Q: The apple falls from the height of 380 m, the time of its flight and speed when it reaches the land.…

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Q: Does the laser beam from the laser device degrade when passing through a glass prism?

A: Laser beams are considered as monochromatic beams .

Q: Q6- In plaster mold we use plaster as expendable material, what are the additional material use in…

A: The additional material which we used in plaster molding is ,Gypsum , water ,Magnesium oxide .