1.875
Explanation:
speed = distance moved ÷ time taken
Answer:
Explanation:
It is given that Hair dryer , Toaster and coffeepot are working simultaneously with power 1200 W , 700 W and 800 W respectively.
So the total power of system is 
it is given that they work properly until toast is on.
By switching on the toast, appliance stop working because it may cause the circuit to break to safeguard the circuit.
Circuit breaker frame are used in home to prevent the short circuit
It's used for the intensity of a tornado
Answer:

Explanation:
Given:
the displacement as the function of time:

here time is in seconds and the displacement in meters.
Now we differentiate this eq. of displacement to get the equation of velocity:

According to given the velocity is
at some time:


& is the only time for (t>=0) instances when the particle will have a velocity of
but in the opposite direction.
The earths crust starts the beginging of growth of land and plants while the earths mantle is deeper and has no life living on top of it