The heat of fusion must be approx from 0 to infinity
Answer:
When the ball hits the ground, the velocity will be -34 m/s.
Explanation:
The height and velocity of the ball at any time can be calculated using the following equations:
y = y0 + v0 · t + 1/2 · g · t²
v = v0 + g · t
Where:
y = height of the ball at time "t".
y0 = initial height.
v0 = initial velocity.
t = time.
g = acceleration due to gravity. (-9.8 m/s² considering the upward direction as positive).
v = velocity at time "t".
If we place the origin of the frame of reference on the ground, when the ball hits the ground its height will be 0. Then using the equation of height, we can calculate the time it takes the ball to reach the ground:
y = y0 + v0 · t + 1/2 · g · t²
0 = 60 m + 0 m/s · t - 1/2 · 9.8 m/s² · t²
0 = 60 m - 4.9 m/s² · t²
-60 m / -4.9 m/s² = t²
t = 3.5 s
Now, with this time, we can calculate the velocity of the ball when it reaches the ground:
v = v0 + g · t
v = 0 m/s - 9.8 m/s² · 3.5 s
v = -34 m/s
When the ball hits the ground, the velocity will be -34 m/s.
The adds pressure to the tire which would cause it to burst
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Neutron is <span>a subatomic particle of about the same mass as a proton but without an electric charge, present in all atomic nuclei except those of ordinary hydrogen.</span>
Answer:
F = 8.25 10⁴ N
Explanation:
The definition of pressure is
P = F / A
F = P A
Let's use Newton's second law in the window
F = F₁- F₂
F = P₁ A - P₂ A
F = (P₁ -P₂) A
The area of a square window is
A = L²
F = (P₁ -P₂) L²
Let's reduce the magnitudes to the SI system
P₁ = 1.2 atm (1.01 10⁵ Pa / 1 atm) = 1.212 10⁵ Pa
P₂ = 0.910 10⁵ atm = 0.9191 10⁵ Pa
Let's calculate
F = (1.1212 - 0.9191) 10⁵ 2.02²
F = 0.8246 10⁵ N
F = 8.25 10⁴ N
