In order to catch a ball, a baseball player naturally moves his or her hand backward in the direction of the ball's motion once
1 answer:
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Answer:
a = 0.5 m/s²
Explanation:
Applying the definition of angular acceleration, as the rate of change of the angular acceleration, and as the seats begin from rest, we can get the value of the angular acceleration, as follows:
ωf = ω₀ + α*t
⇒ ωf = α*t ⇒ α = =
The angular velocity, and the linear speed, are related by the following expression:
v = ω*r
Applying the definition of linear acceleration (tangential acceleration in this case) and angular acceleration, we can find a similar relationship between the tangential and angular acceleration, as follows:
a = α*r⇒ a = 0.067 rad/sec²*7.5 m = 0.5 m/s²
Answer:
Total number of electrons
electrons removed from each sphere
Fraction of electrons transferred is given as
Explanation:
As we know that moles is defined as
so number of atoms of Al in each sphere is given as
Now number of electrons in each atom is given as
atomic number = number of electrons in each atom = 13
total number of electrons in each sphere is
Also we know that force of attraction between them is given as
now we have
Fraction of electrons transferred is given as