2. In a crystalline material, what do we mean by "unit cell"? Why is it useful of unit cells instead of the whole crystal? think

Q: A 10,212 N car traveling at 25m/s rounds a curve of radius 200m. Find the centripetal acceleration…

A: Given, Weight of the car, W = 10212 N speed of the car, v = 25 ms radius of the curve, r = 200 m

Q: A police officer's radar gun emits radio waves at a frequency of 11.7 GHz11.7 GHz. What is the…

A:

Q: An electron (-q = -1.602 x 10-19C) moves along a straight line from point a to point b with a…

A: Given : q = -1.602 × 10-19 C d = 0.65 m E = 1.75 × 107 V/m

Q: The resistances in Figure (a) and Figure (b) are all 9.1 Q, and the batteries are ideal 42 V…

A: Given : Voltage , V= 42 V  All resistances value = 9.1 Ohm  Find : Change in voltage across R1 when…

Q: A pumping station uses a Venturi tube to measure the flow rate of gasoline. The density of the…

A: Given Data:- Density of gasoline is ρ=7.10×102 kg/m3 Radius of the inlet tube is ri=3.62 cm Radius…

Q: When throwing a ball, your hand releases it at a height of 1.5 m above the ground with velocity 6.8…

A:

Q: Determine the wavelengths of the photons from the transition of hydrogen electron from n1n1 = 2 to…

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Q: A single 12 Volt battery is connected to a single 40 Ohm resistor. a. how much current is flowing…

A: Given,  V = 12 volt R = 40 ohm  a) As we know I = V/R     = 12/40     = 0.3 A

Q: (a) What frequency is received by a person watching an oncoming ambulance moving at 105 km/h and…

A: Given data: The speed of ambulance is v=105 km/h. The frequency of sound fs=753 Hz. The speed of…

Q: Find Bemidy af okject which accuise pece of 3m? mass 120ky

A: Given : Mass , M= 120 kg  Volume , V = 3 m3  To Find : Density , d= ?

Q: Boiling water was placed in a freezer maintained at temperature -15 degrees Celsius to have the…

A: Solution:-

Q: A block of weight 3.6 N is launched up a 30 inclined plane of length 2.25 m by a spring with spring…

A:

Q: A piece of stone thrown vertically upwards. It reaches the maximum height in 3 seconds. If the…

A:

Q: Determine a at s 1 m. (s/u) a - s(m)

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Q: Three capacitors of capacitances 2 μF, 4 µF, and 6 µF are connected in parallel. (a) Find the…

A:

Q: Example 2 V = 600 m? m = 500K g. Pair = 1.3 Kg/m² Aerostat The air resistance is negligible The…

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Q: An object is in front of a converging lens with a focal length of 20.0 cm. The image seen has a…

A:

Q: 1. A simple pendulum has a length of 22 inches and has a mass of 1 kg on the end. How long does it…

A:

Q: Do you think it is possible to instead use magnetic field from an external source to generate…

A: In order to produce the current in the circuit we need tochange magnetic flux through the circuit.…

Q: A car rounds a freeway exit turn of radius 40m at constant speed of 20m/s. The turn goes 3/4 around…

A: Constant speed of car  = 20 m/s  Radius of circular track = 40 m

Q: A .38 kg mass tied to the end of a 0.3m long string is pulled in a circle by If it is moving with an…

A: Given:-  Mass m= 0.38 kg  The length of the string L = 0.3 m  The angular speed ω= 9.3 rad/sec…

Q: What is the activity (in particles/s) of a sample of Carbon-14 that contains 9.070E+21 nuclei?

A: Half life of C-14 (t1/2) = 5730 years  N = 9.070 x 1021  As we know, Activity (A) = 0.693 N/t1/2…

Q: TOUR TEACHER The figure below shows five resistors and two batteries connected in a circult. What…

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Q: Monochromatic light from a laser shines onto a gold surface and produces photoelectrons with maximum…

A:

Q: ht H above the floor, as shown in Figure 1.The block slides along the track with negligible friction…

A: Given:-  Mass of the block m = 0.35 kg   The block is released from rest at a height H above the…

Q: A professor connects a resistor in parallel with an electric motor (a schematic of the circuit is…

A: Solution:-

Q: A ball with a volume of 0.61 m³ is floating on the surface of a pool of water. (The density of water…

A: Given Volume of ball  =0.61 m3   Volume inside water V = 0.61 × 5.31/100 =0.032391 m3

Q: A solenoid of lenght 40 cm has 360 turns of radius 2.8 cm. A tightly wound coil with 8 turns of…

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Q: An electric field of strength E = 2000 N/C is directed along the +x-axis as shown. • C E • A B What…

A:

Q: 5. A student throws a 0.1 kg ball into the air. (A) Just after the ball leaves their hand, it has a…

A:

Q: A certain crying baby emits sound with an intensity of 8.0 × 10-8 W/m2. What is the intensity level…

A: The intensity level of the sound wave in dB is given by                              β = 10logIIo…

Q: A racing van has a uniform acceleration of 13 m/s? What distance will it cover in 2 seconds after…

A: Given data :                 Initial velocity    =    u                  Acceleration     =    a…

Q: A block of metal of mass 0.280 kg is heated to 158.0°C and dropped in a copper calorimeter of mass…

A: mass of block of metal = 0.28 kg temperature of metal block = 158o C mass of calorimeter = 0.25 kg…

Q: A cylinder contains a mixture of helium and argon gas in equilibrium at 130°C. (a) What is the…

A:

Q: The leg and cast in the figure weigh 220 N (w;). Determine the weight w, and the angle alpha needed…

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Q: An RLC series circuit is connected to a 220V 60 Hz AC voltage. What is the phase angle o between V…

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Q: An oil refinery uses a Venturi tube to measure the flow rate of gasoline. The density of the…

A:

Q: The equation describing a transverse wave on a string is y(x, t) = (4.50 mm) sin((159 s1)t – (42.8…

A:

Q: uit, when 86.4% of the total energy is stored in the inductor’s magnetic field, (a) what multiple of…

A: In an oscillating LC circuit, when 86.4% of the total energyis stored in the inductor’s magnetic…

Q: A glass window is installed in the window space and the intensity level of the sound entering…

A: Given, D1 = 72 dB  D2 = 47 dB  As we know, D1 = 10*log(I1/I0) -----(1) And, I1 = I0*10^(D1/10) D2 =…

Q: In the figure, two circular arcs have radii a = 13.4 cm and b = 11.1 cm, subtend angle e = 71.0°,…

A: We have two arcs of radii a=13.4 cm and b=11.1 cm which are subtend at an angle of 71o and carrying…

Q: The crew of an enemy spacecraft attempts to escape from your spacecraft by moving away from you at…

A: Speed of the ship moving away v=0.291c and speed of the torpedo with respect our ship u=0.343c where…

Q: Light beam will enter water at incident angle of 80°, before it enter a diamond crystal. What will…

A: The refractive indexes are given as  nwater=1.333ndiamond=2.419

Q: Charge q1 = 2.2 x 10-6 C is placed at the origin and charge q2 = -3.3 x 10-6 C is placed on the…

A:

Q: A 60 kg Gila monster on a merry-go-round is traveling in a circle with a radius of 1.9 m at a speed…

A: Given data:  Mass (m) = 60 kg Radius (r) = 1.9 m Speed (v) = 2 m/s Required: The net force (F)

Q: The resolving power of a refracting telescope increases with the diameter of the spherical objective…

A: In very large apertures, there is a problem of lens sagging, a result of gravity deforming glass.…

Q: How many of these phenomenon can be explained in terms of the particle nature of light.…

A: Option (a) is right photoelectric effect

Q: Light with wavelength 589 nm passes through crystalline sodium chloride. In this medium, find the…

A: wavelength of light in air, λo=589nmlet ,λ be the wavelength of light in NaCl

Q: Several studies using SwISs ráilway workers have shown that exposure to time-varying magnetic fields…

A:

Q: Find the angle between ?⃗⃗ = [1, −2,4] and ?⃗ = [−2,0,3] when they are positioned tail to tail.…

A:

Special Relativity

The theory of special relativity discusses how space and time are related to objects traveling along a straight line at a constant speed. Simply stated, as an object reaches the speed of light, its mass becomes infinite and it is unable to move faster than light. This interstellar speed limit has been the topic of much debate in astronomy, and also in science fiction when people consider how to fly over large distances.