Are there choices?? i dont see any
Answer:
T=75N
Explanation:
In order to solve this problem, we must first start by drawing a free body diagram (see attached picture).
Once we got the free body diagram, we can do an addition of forces so we get:
it equals zero because it's at equilibrium.
So the sum of forces in this case will be:
so now we solve for the tension T:
we need to figure out what W is equal to. But in order to do that, we need to figure out what the volume of the glass is. We know the buoyant force is calculated by multiplying the volume displaces by the density of water and the acceleration of gravity, so we get:
So the volume of the glass will be:
we know the density of water is
so our volume is:
Now we can calculate the weght of the piece of glass, so we get:
W=125N
and now we can calculate the tension:
T=125N-50N
T=75N
Answer:
Negative acceleration
Explanation:
We know that
v= u+at
Where v is the final velocity
u is the initial velocity velocity
a is the acceleration
t is time
When final velocity of train will be zero .
v=0
0= u+at
a=- u/t
So from above we can say that acceleration will be negative .When acceleration is positive then train will never come in rest position.
Answer:
The answer is ""
Explanation:
please find the complete question in the attached file.
Given value:
calculating the radiation absorbed per kg:
A. something pushes or pulls it to a stop, according to Newton's First Law, an object will remain uniform motion in a straight line unless acted upon by an external force.