The plates push apart from eachother
i don't know the anss , sorry.
Answer:
The velocity of a ball will be "-70.13 m/s".
Explanation:
The given values are:
u = 70 m
t = 0.0 s
g = a = -9.8 m/s²
s = -1 m
v = ?
As we know,
The equation of motion will be:
⇒
On substituting the estimated values, we get
⇒
⇒
⇒
⇒
⇒
⇒
In downward direction, it will be:
⇒
Answer:
Explanation:
According to conservation of energy
q = ΔE + w
q is heat given , ΔE is increase in internal energy and w is work done by the gas.
i )
q = 50 kJ ; w = 30 kJ
Substituting the values
50 kJ = ΔE + 30 kJ
ΔE = 20 kJ ; Hence ΔE is positive.
ii )
q = - 25 kJ ; w = 45 kJ
- 25 kJ = ΔE + 45 kJ
ΔE = - 70 kJ .
ΔE is negative. It is endothermic.
iii )
q = 12.5 kJ ; w = - 3.5 kJ
12.5 kJ = ΔE - 3.5 kJ
ΔE = 16 kJ
Hence ΔE is positive.
Explanation:
You can solve for volume using radius or diameter.
Sphere Volume = 4/3 • π • r³ = ( π •d³)/6
We're given the diameter so let's use that.
Volume = PI * d^3 / 6
Volume = 3.14159 * 3.0^3 / 6
Volume = 3.14159 * 9 / 2
Volume = 14.137 cubic centimeters