bar top construction

A solar cooker contains a box made of insulating material, with its inner surfaces blackened. The top is closed by a glass sheet. The box is closed such that the inner part does not come in contact with the outside air, there by reducing heat loss due to convection currents. The glass ..

The biogas plant is a brick and cement structure having the following five sections: Mixing tank present above the ground level. Inlet chamber: The mixing tank opens underground into a sloping inlet chamber. Digester: The inlet chamber opens from below into the digester which is a huge tan..

Solar cell is a very thin sandwich of n-type and p-type wafer thin semiconductors of silicon. A U-shaped metal grid is embedded into the thin semiconductor chip as shown in the fig. The lower end of the sandwich is fixed to a metal base which has a metal lead. The grid has a lead contact on the h..

The floating gas holder type of biogas plant has the following chambers/ sections: Mixing Tank - present above the ground level. Digester tank - Deep underground well-like structure. It is divided into two chambers by a partition wall in between. It has two long cement pipes: i) Inlet pipe o..

Two towers are constructed on a plot of land. The angle of depression of the top of the second tower when seen from the top of the first tower is 40°. If the height of the first tower is 135 ft and the height of the second tower is 78 ft, then find the horizontal d..

The church is on a hill top as shown in the figure. The figure is drawn to a scale of 1 : 400. Find the cost of construction of the road to the church if the rate of construction is $10 per unit. [Given a = 12 units and b = 16 units.] => $4000 or $8000 or $80010 or $80..

During summer Nicholson started constructing a bird house in an area of s 2 yd 2 , which is in square shape. The slant height of the top of the house is measured as h yd. Find the base length of the house and what is the minimum area of the cardboard required to cover the roof o..

The table shows the number of pizzas sold at Maria's pizzeria last week. Toppings Pepperoni Sausage Extra cheese Mushrooms Olives Number of pizzas 7 5 10 6 3 Which of these graphs would be more appropriate to represent the data? => a line plot or a line graph or a double bar gra..

When a bar magnet is suspended freely, it always comes to rest in a north-south direction. This property is used in the construction of a mariner's compas..

It was found that using two bar magnets we could magnetize a steel bar more uniformly. Place the steel bar flat on the table top, and place the opposite poles of two strong bar magnets inclined as shown. The magnets are moved apart and the stro..