Answer:200j
Explanation:
mass(m)=1kg
Velocity(v)=20m/s
Kinetic energy=(m x v^2) ➗ 2
Kinetic energy =(1 x 20^2) ➗ 2
Kinetic energy=(1 x 20 x 20) ➗ 2
Kinetic energy=400 ➗ 2
Kinetic energy =200j
Answer: 2.19 seconds
Explanation:
<u>Given:</u>
Initial speed, u = 0 m/s
Acceleration of the boat, a = 5 m/s^2
Distance between the boat and dock, d = 12 m
Using the third kinematics equation to solve for time:
d = u*t + (1/2)*a*t^2
12 = 0*t + (1/2)*5*t^2
t = sqrt (12*2/5)
t = 2.19 seconds
Therefore, it will take the boat approximately 2.19 seconds to reach the dock
Answer:
Explanation:
A turbine and generator produce the electricity
"A hydraulic turbine converts the energy of flowing water into mechanical energy. A hydroelectric generator converts this mechanical energy into electricity.
Answer:
Longest wavelength, lowest intensity
Explanation:
