Answer:
X=92.49 m
Explanation:
Given that
u= 21 m/s
h= 97 m
Time taken to cover vertical distance h
h= 1/2 g t²
By putting the values
97 = 1/2 x 10 x t² ( g = 10 m/s²)
t= 4.4 s
The horizontal distance
X= u .t
X= 21 x 4.4
X=92.49 m
Answer:
Explanation:
mass number is now 4 times less than the original value so alpha decay occur during alpha decay the mass number is decreased 4 times and atomic number decreased 2 times than the original value
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1 watt is a RATE of using energy ... 1 Joule per second. If you use energy at the RATE of 1 watt and keep it up for 1 whole second, you've used 1 whole Joule of energy. 1 watt-second = 1 Joule .
The mantle<span> is heated in the core, where it is hotter it is more buoyant, whereas in areas where it is cooler it is less buoyant. This results in</span>convection<span> cells in the </span>mantle<span>, and produces horizontal motion of </span>mantle<span> material close to the Earth surface.</span>
