Copper wrie offers very little _____ and does not get herted up quickly.

Nichrome name copper wire of same length and same radius ae connected in series circuit I is passed through them. Which wire gets heated up more ? Give reason.

For each of the following compound statements first identify the connecting words and then break it into component statements. The sand heats up quickly in the Sun and does not cool down fast at night.

Rahul wants to make an electric circuit.He has a bulb, two wires, a safety pin and a piece of copper. He does not have any electric cell or battery.Suddenly he gets some idea. He uses a lemon instead of a battery and makes a circuit.Will the bulb glow?

Study the given differences between primary sludge and activated sludge and select the incorrect ones. Primary Sludge Activated sludge (i) It is sludge formed during primary sewage treatment. It is sludge formed during secondary sewage treatment. (ii) It possesses flocs of decomposer microbes. It does not possess flocs of decomposer microbes. (iii) It does not require aeration. Formation of activated sludge requires aeration. (iv) A lot of decomposition occurs during formation of primary sludge. Very little decomposition occurs during formation of activated sludge.

Raji is on his way to his native in his car for his weekend holidays after finishing the office work. As he is very tired, he begins to feel drowsy. He turns up the car stereo volume, opens the car window and has sips of ice-cold water. How do these actions keep him awake? The increase in the number of sensory stimuli he receives is relayed to the cerebral cortex which gets activated and prevents sleeping.

Read the paragraph and answer the following question: You must be knowing about the high and low tides that occur regularly in the sea. The level of the sea water at any given location along sea shore increases and decreases twice a day at regular intervals. High and low tides occur at different times at places. The level of water in sea changes because of the gravitational force exerted by the moon. Water directly under the moon gets pulled towards the moon and the level of water there goes up causing high tide at that place. At two places on the earth at 90^(@) from the place of high tide, the level of water is minimum and low tides occur there. How does sea level changed?

Suppose the density of air at Madras is rho_0 and atmosphere pressure is P_0. If we go up the density and the pressure both decreae. Suppose we wish to calculate the pressure at a height 10 km above Madras. Ilf we use the equation P_0-P=rho_0gz will we get a pressure more than the actual or less than the actual? Neglect the variation in g. Does your answr change if you also consider the variation in g?