Science

A single constant force F = (3 i + 5 j) N acts on a 3.97 kg particle. (a) Calculate the work done by this force if the particle moves from the origin to the point having the vector position r = ( i – 2 j) m.(b) What is the speed of the particle at r if its speed at the origin is 4 m/s?(c) What is the change in the potential energy of the system?

A single constant force F = (3 i + 5 j) N acts on a 3.97 kg particle.(a) Calculate the work done by this force if the particle moves from the origin to the point having the vector position r = ( i – 2 j) m. (b) What is the speed of the particle …

A single constant force F = (3 i + 5 j) N acts on a 3.97 kg particle. (a) Calculate the work done by this force if the particle moves from the origin to the point having the vector position r = ( i – 2 j) m.(b) What is the speed of the particle at r if its speed at the origin is 4 m/s?(c) What is the change in the potential energy of the system? Read More »

Problem 1. A cable TV coaxial cable is designed with a characteristics impedance of 75Ω. The inner conductor is 0.5 mm thick and the internal diameter of the outer conductor is 8 mm. This cable is used to connect a cable TV distribution center to a TV 20 km away. Assume that the material between the conductors has an attenuation of 1 dB/km, which may be considered a low loss line. The permeability of the dielectric in the line is μ଴ and its permittivity is 4.9ε଴. The frequency is 80 MHz.(a) Calculate the propagation constant of the wave.(b) Write the voltage and current everywhere on the line. Assume the voltage at the generator is 1 V and the line is matched (no reflection of waves anywhere on the line).(c) If a TV requires a signal of at least 100 mV to receive properly, what must be the signal amplitude at the Generator?

EXPERT ANSWER (a) Velocity of the wave: Therefore,  Given  Rearranging, (b) Loss:  is the initial power Therefore, The loss is 1 dB/km So the loss after x km, is x dB Given  Therefore,  The impedence: where D is the external diameter and d is the internal diameter. Therefore, current: Therefore, where x is in km …

Problem 1. A cable TV coaxial cable is designed with a characteristics impedance of 75Ω. The inner conductor is 0.5 mm thick and the internal diameter of the outer conductor is 8 mm. This cable is used to connect a cable TV distribution center to a TV 20 km away. Assume that the material between the conductors has an attenuation of 1 dB/km, which may be considered a low loss line. The permeability of the dielectric in the line is μ଴ and its permittivity is 4.9ε଴. The frequency is 80 MHz.(a) Calculate the propagation constant of the wave.(b) Write the voltage and current everywhere on the line. Assume the voltage at the generator is 1 V and the line is matched (no reflection of waves anywhere on the line).(c) If a TV requires a signal of at least 100 mV to receive properly, what must be the signal amplitude at the Generator? Read More »

What are the two famous ways of designing the RTD sensor? TT T Arial 3 (12pt) T.S

EXPERT ANSWER The two famous ways of designing RTD sensor are:- 1) Wire wound and 2.) Thin film. In wire wound RTD it uses platinum wire wound around a ceramic or glass bobbin in one of two configurations: birdcage and helix. While in the thin-film type, the sensing element is formed by depositing a thin …

What are the two famous ways of designing the RTD sensor? TT T Arial 3 (12pt) T.S Read More »

A 100m steel bridge sits on two concrete abutments and has a mass has a mass of about 1.00×105 kg. Its CG is in the middle of the bridge. A car of 1000 kg is located 40 m from the left end of the bridge and a truck with a mass of 5000 kg is located 60 meters from the same end.

A 100m Steel Bridge Sits On Two Concrete Abutments And Has A Mass Has A Mass Of About 1.00×105&Nbsp;Kg. Its CG Is In The Middle Of The Bridge. A Car Of 1000 Kg Is Located 40 M From The Left End Of The Bridge And A Truck With A Mass Of 5000 Kg Is Located …

A 100m steel bridge sits on two concrete abutments and has a mass has a mass of about 1.00×105 kg. Its CG is in the middle of the bridge. A car of 1000 kg is located 40 m from the left end of the bridge and a truck with a mass of 5000 kg is located 60 meters from the same end. Read More »

A strip of copper 120 µm wide is placed in a uniform magnetic field of magnitude 0.67 T, perpendicular to the strip. A current i = 23 A is then sent through the strip. Find the ratio of the Hall electric field E to the electric field EC responsible for moving charge (the current) along the length of the strip (E/EC). (The number of charge carriers per unit volume for copper is 8.47 × 1028 electrons/m3and its resistivity is 1.69 × 10-8 ohm-m.)

A strip of copper 120 µm wide is placed in a uniform magnetic field of magnitude 0.67 T, perpendicular to the strip. A current i = 23 A is then sent through the strip. Find the ratio of the Hall electric field E to the electric field EC responsible for moving charge (the current) along the length of the strip (E/EC). …

A strip of copper 120 µm wide is placed in a uniform magnetic field of magnitude 0.67 T, perpendicular to the strip. A current i = 23 A is then sent through the strip. Find the ratio of the Hall electric field E to the electric field EC responsible for moving charge (the current) along the length of the strip (E/EC). (The number of charge carriers per unit volume for copper is 8.47 × 1028 electrons/m3and its resistivity is 1.69 × 10-8 ohm-m.) Read More »

Problem 1: Consider a system as shown. Mass m1 moves up the ramp (angle 6) and mass m2 moves down with acceleration a. The pulley (which is a disk of mass M and radius R) rotates with angular acceleration α. The coefficient of kinetic friction between block 1 and the ramp is Me 72 0 m2 Part 1: What is the acceleration of each block a m2 Part 2: What is the tension, T1 and T2 in each portion of the string? Part 3: If the system starts from rest, what is the speed, v of each block and the angular speed, pulley when mass m2 has dropped a distance h? of the

EXPERT ANSWER

A spring is mounted vertically at the bottom of an empty swimming pool. A block of mass= 596 kg is attached to the spring, and it compresses the spring from its equilibrium position by distance xo. Now the swimming pool is filled with fresh water, and the block is submerged. You find the the spring is now extended distance x = 1.61xo from its equilibrium position. Find the density of the block.3kg/m3

A spring is mounted vertically at the bottom of an empty swimming pool. A block of mass M = 596 kg is attached to the spring, and it compresses the spring from its equilibrium position by distance xo. Now the swimming pool is filled with fresh water, and the block is submerged. You find the the spring is …

A spring is mounted vertically at the bottom of an empty swimming pool. A block of mass= 596 kg is attached to the spring, and it compresses the spring from its equilibrium position by distance xo. Now the swimming pool is filled with fresh water, and the block is submerged. You find the the spring is now extended distance x = 1.61xo from its equilibrium position. Find the density of the block.3kg/m3
Read More »

The Sunshine Skyway Bridge is 131 m high. A truck crossing the bridge loses a piece of cargo, launching it horizontally and perpendicularly off the bridge at 75 miles per hour. How far does the object travel horizontally before it hits the water?

The Sunshine Skyway Bridge is 131 m high. A truck crossing the bridge loses a piece of cargo, launching it horizontally and perpendicularly off the bridge at 75 miles per hour. How far does the object travel horizontally before it hits the water? Group of answer choices 118 m 137 m 173 m 155 m …

The Sunshine Skyway Bridge is 131 m high. A truck crossing the bridge loses a piece of cargo, launching it horizontally and perpendicularly off the bridge at 75 miles per hour. How far does the object travel horizontally before it hits the water? Read More »