Kinetic Energy is calculated by KE= 1/2mv2
Answer:
through out the projectile motion the horizontal vilocity remains constant due the absence of the air resistance so the ans is 47.3
Explanation:
time taken by the object dropped = 2s
this time depends on the height of the plane from ground
it is given by
now the distance covered horizontally is given as 190 m
now the speed of the object is
now when plane is moving at same height but with double speed
so it will take same time to hit the ground again
so the time is given as
so it will take t = 2 s again to hit the ground
Answer:
In the case of an electric bulb, the electrical energy is converted to light and heat. The amount of electrical energy put into a bulb = the amount of light energy (desirable form) plus the heat energy that comes out of the bulb (undesirable form).
Explanation:
sana nakatulong)):
Answer:
55,42 J
Explanation:
Since the height of the room is 3.45 m (distance between the floor and the ceiling) the difference between this value and the length of the rope 1.19 m; it will be equal to (3.45-1.19) =2.26 m. If we take as a reference point (Ep=0) the floor of the room, then the potential energy will be equal to Ep = M * g * h, replacing values in this equation (2.5 kg * 9.81 m/s2 * 2.26 m) will be 55,42 (N * m) or Jules.