Answer:
Air-7sec
Water-5sec
Explanation:
-The average speed of the stone in air is given as
, average speed in water is
. And the total distance is
.
Let speed in air be
and in water
and
is displacement:
![S=vt\\\\S=v_1t_1+v_2t_2\\\\127=16t_1+3t_2\\\\t_1+t_2=12s](https://tex.z-dn.net/?f=S%3Dvt%5C%5C%5C%5CS%3Dv_1t_1%2Bv_2t_2%5C%5C%5C%5C127%3D16t_1%2B3t_2%5C%5C%5C%5Ct_1%2Bt_2%3D12s)
#Solving the simultaneous equations:
![t_1=12s-t_2\\\\127=16(12s-t_2)+3t_2\\\\127=192s-16t_2+3t_2\\\\t_2=5s\\\\t_1=12-5=7s](https://tex.z-dn.net/?f=t_1%3D12s-t_2%5C%5C%5C%5C127%3D16%2812s-t_2%29%2B3t_2%5C%5C%5C%5C127%3D192s-16t_2%2B3t_2%5C%5C%5C%5Ct_2%3D5s%5C%5C%5C%5Ct_1%3D12-5%3D7s)
Time in air is 7sec, Time in water is 5sec
the ability to use an applied force to make an object move
Explanation:
The scientific definition of energy that relates it to work is the ability to use an applied force to make an object move.
- Energy is defined scientifically as the ability to do work.
- Work done is the force applied to make an object move in a specific direction.
Work done = Force x distance
- Since energy is the ability to do work, we are are correct to say energy is also the ability to use an applied force to make an object move.
learn more:
Work done brainly.com/question/9100769
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Answer:
Ex(P) = -3.602 x 10^6 N/C
Explanation:
- q2 = 2.6 μC = the net charge on the conducting shell
- inner radius of conducting shell = a = 2.2 cm =0.022m
- outer radius of conducting shell = b = 4.5 cm = 0.045m
1) To get Ex(P), the value of the x-component of the electric field at point P, located a distance 8.8 cm along the x-axis from q1 ;
Ex(P) = k(q1+q2)/r^2
= 9 x 10^9 (-5.7 + 2.6) x 10^-6 /0.088^2
Ex(P) = -27.9 x 10^3/ 0.007744
Ex(P) = -3.602 x 10^6 N/C
According to nebular hypothesis, the one that is true is :
B. Gas and dust flattened into disk shape
According to the hypothesis, outer planets are made up of Gases that was left after the sun is formed and planets are made up from the outer part of the disk
hope this helps