2. Find the ratio of the diameter of aluminium to copper wire, if they have the resistance per unit length. Take the resistivity values of aluminium and copp be 2.65x 10-" N m and 1.72 × 10-ª m respectively.

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: Consider an image formed by refraction at the given spherical surface. Which of the following would…

A: Given:-  Consider the image formed by the refraction at the given spherical surface of refractive…

Q: An object of mass M explodes, breaking apart into three smaller objects of mass m1 and m2 and m3.…

A: In the component form, we break the given vectors in vertical and horizontal components. Object M…

Q: In the movie, Raiders of the Lost Ark, archaeologist Indiana Jones replaces a solid Golden Idol with…

A: Given, Height = 18 cm = 0.18 m Diameter = 12 cm  Radius = 6 cm = 0.06 m density = 19.32 g/cm3 = 1932…

Q: What are the wavelength and propagation speed for a wave of frequency 6.771 MHz in copper? copper…

A: Given data- Frequency, F=6.771 MHz=6.771×106 HzResistivity, ρ=1.68×10-8 Ω-mHere, Conductivity σ of…

Q: the answer is not provided.

A: Initial electric field = E1= E Initial pressure = P1 = P

Q: Light with a wavelength of 350 nm strikes double-slits with a spacing of 0.75 mm which is then…

A: Given, wavelength λ= 350 nm Slit spacing d = 0.75 mm Screen distance D = 1.0 m Order n = 2 Angular…

Q: The figure shows a popular ride in an amusement park. A vehicle at end of a long rotating arms moves…

A:

Q: 4. A skier is going down a hill with an angle of 30°. His weight is 60kg and his normal force is…

A: Given- Angle made by hill to horizontal (θ) = 300 Weight of skier (W) = 65 kg (W = mg ) Mass (m) =…

Q: 50. The strongest earthquakes ever recorded occurred off the coast of Ecuador and Colombia in 1906,…

A: The relation between magnitude and intensity be defined as, Where, M be defined as the magnitude of…

Q: Q4:-Find the kinetic energy of a proton whose de Broglie wavelength is 1.00fm= 1.00x10-15 m. [rest…

A:

Q: A concave mirror (f= +12.5 cm) creates a virtual image of an 5.3 cm tall object. If di is -18.3 cm,…

A: Using the mirror formula and sign convention,we can calculate the magnification as follows

Q: O ) () SNOSN

A:

Q: Question 1.1 The transmembrane potential is measured at two points along a nerve axons (-5 cm and 5…

A: Assume the conduction velocity is 5 ms=0.5 cmms.  On x-axis take the time in milliseconds. In every…

Q: The voltage V (volts), current I (amperes), and resistance R (ohms) of an electric circuit like the…

A:

Q: Determine the actual area of the irregular figure and its individual nterior angle. D 5m 5m E 8m…

A: As, DE=DC<DEO=<DCO∆DEO≅∆DCOThis gives, EO=OCand…

Q: Find Vo using voltage divider. 1 kN 12 kN Vo 3 kQ 6 V

A:

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: For an exothermic reaction * O both AH and AU are negative O only enthalpy change (AH)is negative O…

A: SOLUTION: Through the exothermic reactions energy is released in the form of light energy or heat…

Q: Consider a system of two levels E1= 0, g1= 1 and E2= 1.6 X1020J, g2 = 2 is populated by N atoms at…

A: here E1 = 0 , g1  = 1 E2 = 16 , * 10 -20  J, g2 = 2 now for average energy E =Σ Er gre-BEΣgre-BE…

Q: If the weight of a body immersed in a fluid exceeds the buoyant force then the body will rise until…

A: The buoyant force is the resultant force on the body exerted by the fluid. If the weight of the body…

Q: due to the water), and Fw (due to the wind). Find the magnitude of the force Fw. W :

A: Assume that the north direction is along the + y-axis and the east direction is along the + x-axis.…

Q: Mechanical energy is equal to: A) Kinetic energy + Chemical energy B) Kinetic energy + Potential…

A: We are aware that kinetic energy and potential energy are combined to form mechanical energy.It is…

Q: 1 0 3 000 예 2

A: Lenz's law states that the current induced in a circuit due to a change or a motion in a magnetic…

Q: If we placed a dipole at point A on the earth surface, it will be oriented by +25°, and if we moved…

A: The torque experienced by a magnetic dipole in magnetic field is given by   Ť=m×B  And if the dipole…

Q: 7. The martian craft has destroyed our poor drone! interplanetary missile carrying aircraft takes…

A:

Q: Find 1. the center of mass for this circle? 2. The moment of inertia about the Z axis

A: The center of mass of a sector of radius 'r' subtending an angle 2θθ at the center is given by,  z =…

Q: Starting at time t = 0, an object starts moving along a straight line. Its coordinate in meters is…

A:

Q: A thin 12-cm-long solenoid has a total of 460 turns of wire and carries a current of 1.9 A.

A:

Q: In the same soil deposit, if the incident wave at the boundary is inclined at a 30° angle, determine…

A: Given:  Incident ray in the denser medium, the angle of incidence is 30 degree.

Q: 55. What is the ratio of the intensity of a given sound to that of one that is 100 decibels higher?

A: Write the formula for the sound intensity level in dB.

Q: A mass M attached to a spring oscillates with a period of 2 s. If the mass is increased by 2 kg the…

A: We are aware that a mass M suspended from a spring oscillates with a 2 s period.The time lengthens…

Q: An object with a mass of 500 g is released from a helight of 40 m. Since the air friction is…

A: (3) Write the mass of the object. m=500 kg   Write the initial height of the object. h=40 m

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

A:

Q: The uniform solid block in the figure has mass 35.8 kg and edge lengths a = 0.938 m, b = 1.44 m, and…

A: The length of the body diagonal of this object is, l = √(1.442 + 0.9382) l = 1.718 m The location of…

Q: A sphere of linear magnetic material is placed in a uniform magnetic field B = 1.13 T. What is the…

A:

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 .

Q: A box of mass 9.8 kg rests on a frictionless inclined plane which is at an angle of 0 = 28 to the…

A:

Q: 56. The human ear can just barely distinguish between two sounds if one is 0.6 decibels higher than…

A:

Q: What torque is required to uniformly rotate a disk with moment of inertia 0.7 kg m2 up to 2 rad/s in…

A: Given data:  Moment of inertia (I) = 0.7 kg.m2 Initial angular velocity (ωi) = 0 rad/s Final angular…

Q: A 7-Kg man stands on a bathroom scale in an elevator. What does the scale read it the elevator is…

A:

Q: Vector Worksheet #2 Add each component vector to find a resultant vector by using the "Head to Tail…

A: A vector quantity is expressed as  a physical quantity that has both a direction and a magnitude. A…

Q: A 3-kg block slides along a horizontal surface with an initial speed of 7 m/s. The coefficient of…

A: mass = 3 kg initial speed = 7m/s coefficient of friction = 0.5 d = 4 m angle of ramp = 40 degree

Q: 4. Early life on Earth formed in h. late September 5. Cambrian explosion would occur in f. mid…

A: 6) The Triassic Period (252-201 million years ago) 7)around 300,000 years ago. on that time 8)The…

Q: A circular loop of radius 0.146 m carries a current of 6.97 A, placed in xy-plane. What is the…

A: The magnetic field of circular loop at its axis is given by following equation

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.