Answer:
F = 1.2 10⁵ N
Explanation:
Force is defined by
P = F / A
F = P A
The area is
A = π r²
the radius is half the diameter
r = d / 2
A = π d²/4
we substitute
F = P π d²/4
let's calculate
F = 145 10⁶ π (3.25 10⁻²)²/4
F = 1.2 10⁵ N
Answer:
It is because they are physical quantities
Explanation:
I think so..
Answer:
6.4 J
Explanation:
m = mass of the bullet = 10 g = 0.010 kg
v = initial velocity of bullet before collision = 1.8 km/s = 1800 m/s
v' = final velocity of the bullet after collision = 1 km/s = 1000 m/s
M = mass of the block = 5 kg
V = initial velocity of block before collision = 0 m/s
V' = final velocity of the block after collision = ?
Using conservation of momentum
mv + MV = mv' + MV'
(0.010) (1800) + (5) (0) = (0.010) (1000) + (5) V'
V' = 1.6 m/s
Kinetic energy of the block after the collision is given as
KE = (0.5) M V'²
KE = (0.5) (5) (1.6)²
KE = 6.4 J
Answer :
b - cake baking
explanation :
because the rest of the options are changing due to chemical reactions , when you bake a cake your developing it’s actions by touching it physically
Lactic acid fermentation. hope this helps :)
