Answer:
v = 220 m / s
Explanation:
This is a kinematics exercise, the expression for velocity is
v = 25 t² - 80 t - 200
asks the velocity for time t = 6 s.
let's calculate
v = 25 6² - 80 6 - 200
v = 220 m / s
Answer:
Explanation:
An adiabatic process refers to one where there is no exchange of heat.
The equation of state of an adiabatic process is given by,
where,
= pressure
= volume
= constant
Therefore, work done by the gas during expansion is,
(using )
It would be D because there is more gravitational forces acting on it than a small block of wood
Answer:
Explanation:
This is the row echelon form of A. This means that only two of the vectors in our set are linearly independent. In other words, the first two vectors alone will span the same subspace of as all three vectors.
Therefore, the linearly independent spanning set for the subspace is
Answer:
Explanation:
The Work-Kinetic Energy Theorem states that the work done on a particle of mass "m", equals the particle's change in Kinetic Energy (final Kinetic Energy of the particle "" minus the initial Kinetic energy of the particle ""), and it is expressed as:
where we have used the explicit form of the KE of a particle of mass m and velocity . Of course, stands for the final velocity of the particle, and for the particle's initial velocity.