Find a mass of a book that has a weight of 14.7 Newtons?(question)
(answer)
If a book has a weight of 14.7 Newtons and its mass would be 1.50 kg.
Fnet = ma
4 N = 5 kg * a
a = 4 N/5 kg
a = 0.8 ms^-2
Answer : The correct option is, (D) Surface tension is caused by cohesion between water molecules on the surface.
Explanation :
Surface tension : It is caused by the cohesion between water molecules on the surface or we can say that it is a tension of the surface of liquid caused by the attraction of the particles which are present on the surface layer by the bulk of the liquid, which tends to minimize surface area.
And due to the surface tension phenomena the shape of the water molecule tend to assume a spherical shape to attain the minimum surface area.
Hence. the correct option is, (D) Surface tension is caused by cohesion between water molecules on the surface.
Answer:
V0=27.4 m/s; t=0.8 s
Explanation:
Final position y=37.0 m, time = 2.3 s; Initial position is set to be zero. We calculate the initial speed with the kinematics equation:
We solve for initial speed
Now, using the same expression we estimated time to first reach 18.5 m :
Second order equation with solutions
t1=0.8 s and t2=4.8 s
The first time corresponds to the first reach.
This would be a geocentric model.
It was proposed due to religion before the Renaissance in Italy, and was later replaced with the current heliocentric model.