Other Physics Answers

Directions: Answer the questions and Activities based on the topic discussed and understanding.

1. What are nanomaterials and how are they made?

2. What are the factors that need to be considered before manufacturing materials through nanotechnology?

3. What are the contributions of nanotechnology for the improvement and sustainability of our environment?

4. How do you describe Nanotechnology?

5. Have you ever seen a nanomaterial? What is it? What material you used?

6. Is nanotechnology helpful in this society or not? Explain to us why.

7. Give a sample product made from a nanomaterial.

8. What is a Nanoscale?

9. What is the process for Nanomanufacturing?

10. What is the concept of nanotechnology and nanoscience?

Given that a positive charge Q1=+3c and negative charge Q2=2c, are separated by a distance of 8cm. Take permittivity constant k=9.0×10^9NM^2/c^2.

(a). find The electric field at point p 1cm from Q2

(b) what is the electric potential at point P ,5 cm from Q1.

Sketch the response curves for the steady – state displacement amplitude A and average power (absorbed or dissipated) of two forced oscillators with identical m, ω₀ and F₀, but one having r= 0,1mω₀ and the other having r= mω₀.

1. Given that a positive charge Q1=+3c and negative charge Q2=-2c, are separated by a distance of 8cm. Take permittivity constant k= 9.0×10^9NM^2/C^2. (a) find the electric field at a point P, 1cm from Q2(m) (b) find the electric potential at point P 5cm From Q1.

Assuming the electrons to be free, calculate the total number of states below E =  5 eV in a volume 10⁻⁵ m³.

Water is flowing through a pipeline shown on the right. The radii of the pipe at points 1 and 2 are 𝟎.𝟓𝟎𝟎 [m] and 𝟏.𝟓𝟎 [m], respectively. The volume flow rate through the pipeline is 𝟐.𝟓𝟎 [L/s]. If the pressure at point 1 in the pipe is 𝟐𝟎𝟎 [kPa], what is the pressure at point 2, located 𝟓.𝟎𝟎 [m] above point 1?

For your science exhibit, you want to make a block of wood float at the interface between a

layer of oil of unknown density 𝜌oil, and water (𝝆𝐰𝐚𝐭𝐞𝐫=𝟏𝟎𝟎𝟎 [kg/m3]) inside a container as shown. The density of the wood is 𝝆𝐰𝐨𝐨𝐝=𝟖𝟎𝟎 [𝐤𝐠𝐦𝟑⁄]. What must be the density of the oil so that only 𝟑𝟎.𝟎% of the wood is submerged in water?

A cylindrical disk of wood weighing 𝟓𝟎.𝟎 [N] and having a diameter of 𝟐𝟓.𝟎 [cm] floats on a liquid of density 𝝆=𝟎.𝟕𝟓𝟎 [g/cm3]. The cylinder of liquid is 𝟔𝟎.𝟎 [cm] high and has a diameter that is the same as that of the wood. What is the gauge pressure halfway down the liquid?

To determine frequency of AC supply by CRO.

A two-span continuous beam has equal spans of clear lengths equal to R I 120 m and issubjected to a superimposed service dead load of R I 100 kNim and a service live load

of R I 80 kNim. A superimposed service concentrated dead load of R I 5 kN and a

service concentrated live load ofR I 4.5 kN are applied at mid-section ofone span only.

Design the shear reinforcement using C-35 concrete and Grade 420 steel. Width of the

beam is R/2.2 nun rounded to 75 mm multiples and depth ofbeam is R/1.5 mm rounded

to 25 nun multiples.