The answer is 75 * Cos (45) = ..... Km
The correct option is (D). i.e.<span>When the current is too high, a metal strip in the fuse melts and opens the circuit.
Explanation: </span>The fuse contains a small piece of wire which has very less melting point. As there is huge current flow, the wire heats to the heavy current flow & melts & the circuit is broken.
Hence, it saves the device from the heavy current flow & the device is damage free. breaks the circuit if a fault in an appliance causes too much current flow.
<h3>
Answer:</h3>
12250 J
<h3>
Explanation:</h3>
<em>elastic potential energy = 0.5 × spring constant × (extension)2</em>
spring constant = 500
extension = 7cm
7^2=49
0.5 × 500 × 49 = 12250 J or 12.25kJ
Answer: Temperature inversion
Explanation: Temperature inversion is a reverse of the normal temperature flow or distribution of the air,it usually causes temperature to rise as altitude increase towards the troposphere instead of reduction of temperature.
Temperature inversion is caused when warm,dense air flow above cold,less dense air. Temperature inversion is hazardous to man as it traps pollutants close to the Earth surface,this condition limits vertical circulation.
<span>The answers are --
a) wind direction
b) wind speed
e) intensity of precipitation
f) location of precipitation</span>