Electric kettle with the resistance of 20-02.is used-to-heat:4 kg of water. If the initial temperature of the water is 20°C, how much time-later will the water boil?
C-water=-4200 J/kg°C. The kettle uses:220 V voltage.
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In order for the bug to fly through the air a force has to push the bug forward. identify this force. how does the bug produce

Which statements about tornadoes are true? check all that apply. (a) about 12,000 tornadoes hit the united states every year. (b) a tornado looks like a funnel. (c) tornadoes are deadly atmospheric storms that cause millions in damages each year. (d) tornadoes can reach wind speeds of more than 300 miles per hour. (e) kansas is the state with the most tornadoes. (f) you will always notice a funnel before a tornado strikes.

Awater-filled u-tube manometer is used to measure the pressure inside a tank that contains air. the water level in the u-tube on the side that connects to the tank is 5 ft above the base of the tank. the water level in the other side of the u-tube (which is open to the atmosphere) is 2 ft above the base. determine the pressure within the tank.