Answer:
d= 1.5 g/cm3
Explanation:
datos
m= 30g
v= 20cm3
d=?
formula
d= m / v
solución
d= 30g / 20cm3 = 1.5g/cm3
Answer:
1. it helps to change the direction.
2. it helps us to walk on ground.
3. it helps the vechils to break while moving.
4. helps in changing one form of enegry to another form. eg when we rub our hands we feel heat energy.
5. it opposites the force.
6. it helps us to change shape of objects.eg we roll the dough to make it roti.
7. it changes the state of body from rest motion.eg when we push any obj from inclined plane it moves.
i all know is just 7..
Answer:
The amount of heat flows per second in given aluminium bar is 3.066 .
Explanation:
We know that , amount of heat flowing per second is given by
Where A = area =
K = Thermal conductivity =
L = Length =
Upon substituting these values in above equation we get ,
Heat flowing per second =
To determine the distance in units of feet of the object falling at a given time, we simply use the relation given above and substitute the given value of time to the function. We do as follows:
s = 16t^2
s = 16 ( 6 )^2
s = 576 feet
The distance of the object from the ground at 6 seconds is 576 ft.