Answer:0.00125 watts
Explanation:
resistance=50 ohms
Current=5 milliamps
Current=5/1000 milliamps
Current =0.005 amps
power=(current)^2 x (resistance)
Power=(0.005)^2 x 50
Power=0.005 x 0.005 x 50
Power=0.00125 watts
Answer:
the answer is B
Explanation:
we assume that all of these springs have tha same k , the spring constant
elastic energy for the initial system = Ep1=
for the new changed system , the spring constant = k1+k2 = k+k = 2k , but the displacement is also reduced to 0.5 d
so Ep2 =
so the new total Ep stored in the new system is 1/2Ep
hope it helps
Answer:
8.06 m/s
Explanation:
It is given that,
Mass of a swimmer, m = 72 kg
He jumps from a diving board 3.25 m above the water.
We need to find the speed just as he hits the water if he jumps straight up. Using the conservation of energy to fin it as follows :
So, the required speed is 8.06 m/s.
Answer: Friction is like when u take two stick's and rub it together to make fire when you use friction it can produce heat. Applied force is like and applied to an object or person if a person is pushing a desk across the room then there is applied force.