An axle passes through a pulley. Each end of the axle has a string that is tied to a support. A third string is looped many time
1 answer:
You might be interested in
Answer:
The required energy remains identical in both scenarios since the specific heat capacity (Cp) does not change with varying pressure.
Explanation:
Given;
initial temperature, t₁ = 50 °C
final temperature, t₂ = 80 °C
Temperature change, ΔT = 80 °C - 50 °C = 30 °C
Pressure for scenario one = 1 atm
Pressure for scenario two = 3 atm
The energy needed in both scenarios is expressed as;
Where;
Cp denotes specific heat capacity, which only varies with temperature and remains unaffected by pressure.
Hence, the energy required remains the same for both scenarios since specific heat capacity (Cp) is pressure-independent.
Answer:
1)
2)
Explanation:
Projectile Motion
When an object is projected near the surface of the Earth at an angle to the horizontal, it follows a trajectory known as a parabola. The only force acting on it (ignoring wind resistance) is gravity, affecting the vertical axis.
The height of a projectile can be calculated using
where represents the initial height from ground level,
is the vertical component of the initial velocity, and t is the elapsed time.
The vertical speed component is expressed as
1) To proceed, we will determine the initial vertical velocity component since we lack sufficient data to calculate the absolute value of .
The peak height is attained when , which allows us to compute the time to reach that height.
Solving for
Thus, the maximum height reached is
We know this value is equal to 8 meters
Continuing with the calculations for
Substituting known values yields
2) At t=1.505 seconds, the ball is positioned above Julie’s head; we can calculate