Related Questions

Let D be a simple graph on 10 vertices such that there is a vertex of degree 1, a vertex of degree 2, a vertex of degree 3, a vertex of degree 4, a vertex of degree 5, a vertex of degree 6, a vertex of degree 7, a vertex of degree 8 and a vertex of degree 9. What can be the degree of the last vertex?
The Earth is an oblate spheroid and not a perfect sphere. This is because
1. the Earth has a rotational motion and the rotational speed increases as one goes from the Poles towards the Equator.
2. the Equator experiences greater gravitational pull from the Sun.
3. the intensity of sunlight received at the Equator is greater than that at the Poles.
The rear window of an automobile is made of thick glass i.e. AB = 5 mm and thermal conductivity is 0.8 W/m degree. To defrost this window, a thin transparent film type heating element has been fixed to its inner surface. For the conditions given below, determine the electric power that must be provided per unit area of window if a temperature 5 degree Celsius is maintained at its outer surface. Interior air temperature and the corresponding surface coefficient are 20 degree Celsius and 12 W/m2 degree. Surrounding air temperature and the corresponding surface coefficient are – 15 degree Celsius and 70 W/m2 degree. Electric heater provides uniform heat flux
When it is noon along 82° 30' longitude, along what degree of longitude it will be 6.30 a.m.?
The GPS sattelites orbital planes are inclined to the equator and spaced in the longitude, The inclination and spacing of the longtitude in degree are . . . . . . . .
The location of a place A is at 60° E longitude and 30° S latitude while the location of B is at 60° E longitude and 45° N latitude. Time at B will be ________
During heat treatment, cylindrical pieces of 25 mm diameter, 30 mm height and at 30 degree Celsius are placed in a furnace at 750 degree Celsius with convective coefficient 80 W/m2 degree. Calculate the time required to heat the pieces to 600 degree Celsius. Assume the following property values Density = 7850 kg /m3 Specific heat = 480 J/kg K Conductivity = 40 W/m degree
A water line is buried underground in dry soil that has an assumed initial temperature of 4.5 degree Celsius. The pipe may have no flow through it for long period of time, yet it will not be drained in order that no freezing occurs, the pipe must be kept at a temperature not lower than 0 degree Celsius. The pipe is to be designed for a 30 hour period at the beginning of which the soil surface temperature suddenly drops to – 17 degree Celsius. Workout the minimum earth covering needed above the water pipe so as to prevent the possibility of freezing during 36 hour cold spell. The soil in which the pipe is buried has the following properties Density = 640 kg/m3 Specific heat = 1843J/kg degree Thermal conductivity = 0.345 W/m degree
Which of these statements are correct?
1. Prime Meridian passes through Greenwich and is at 0° Longitude.
2. International Date Line, on the map appears as a straight line along 180° Longitude.
3. While crossing International Date Line from east to west, one gains a day.
4. Tropic of Cancer lies at Latitude.
Find the heat flow rate through the composite wall as shown in figure. Assume one dimensional flow and take k 1 = 150 W/m degree k 2 = 30 W/m degree k 3 = 65 W/m degree k 4 = 50 W/m degree AB = 3 cm, BC = 8 cm and CD = 5 cm. The distance between middle horizontal line from the top is 3 cm and from the bottom is 7 cm