Answer:
150 newtons
Explanation:
F = ma
force = mass * acceleration
the mass is 10 kg, and the accelration is 15 m/s^2
10*15 = 150
the force unit that matches with meters/second and kg is newtons
F =ma
150 newtons = 10 kg * 15 m/s^2
Answer:
solids cannot flow because the molecules a held tightly together
Answer:
The tension in the rope is 20 N
Solution:
As per the question:
Mass of the object, M = 2 kg
Density of water, 
Density of the object, 
Acceleration due to gravity, g = 
Now,
From the fig.1:
'N' represents the Bouyant force and T represents tension in the rope.
Suppose, the volume of the block be V:
V =
(1)
Also, we know that Bouyant force is given by:

Using eqn (1):


From the fig.1:
N = Mg + T
40 = 2(10) + T
T = 40 - 20 = 20 N

False ! energy can not be created and for generators , they convert mechanical energy to electrical energy !