Answer:
a) Fg = m* g
b) Fg = 58.86 N
c) pointing down (towards the center of the Earth)
d) N = 58.86 N
e) pointing up
Explanation:
a) Force is defined as mass of the object times the acceleration it is subjected to. In our case, the block is subjected to the acceleration of gravity (g), therefore the force due to gravity (Fg) is Fg=m*g
b) perform the indicated product of part a):
Fg = m*g = 6 kg * 9.81 m/s^2 = 58.86 N
c) since the object is not moving, that means that the contact force exerted by the surface were the block is resting, must equal the acting force of gravity, but pointing in opposite direction, so the NET force on the block is zero. Therefore, the magnitude of the normal force (N) must equal the magnitude of the object's weight: N = 58.86 N
d) As explained in part c), the normal force must be acting in opposite direction to the force of gravity, which means pointing up.
Vi = 2m/s
a= 4.5 m/s
d= 340 m
vf= ?
use this equation ... vf^2=vi<span>^2+2ad
you should get vf = 55.3
hope this helps </span>
Uneven heating is what causes the temperature differences
Answer:
a
b
Explanation:
From the question we are told that
The area of Manhattan is
The area of the ice is
The thickness is
Generally the volume of the ice is mathematically represented is
substituting value
Generally the mass of the ice is
Here is the density of ice the value is
=>
=>
Generally the energy needed for the ice to melt is mathematically represented as
Where is the latent heat of fusion of ice and the value is
=>
=>
Considering part b
We are told that the annual energy consumption is
So the time taken to melt the ice is
converting to days
Answer:
Explanation:
A) The origin of the coordinate system could be at the position where the rock leaves the hand of he person throwing the rock.
B)
C)
D)
E) Use equation from part C and substitute for time t in equation from part D: