Answer:c>a>b
Explanation:
Given
All the engine extracts same amount of heat(Q) from High-temperature reservoir
For a) 400 and 500 K
For b)500 K and 600K
For c) 400 K and 600 K
So c will give the highest amount of work
c>a>b
Answer:
c) The slope is not constant and increases with increasing time.
Explanation:
The equation for the position of this particle (starting from rest is)
We can take derivative of this with respect to time t to get the equation of slope:
As time t increase, the slope would increases with time as well.
Answer:
7.61 m/s backwards
Explanation:
Initial momentum = final momentum
0 = (880 kg) v + (12.4 kg) (540 m/s)
v = -7.61 m/s
The cannon's recoil is 7.61 m/s backwards.
Assume that aerodynamic resistance is ignored in the analysis.
The launch velocity is 40.8 m/s at an initial angle of 28°.
Therefore:
Vertical component of launch velocity is
v = (40.8 m/s)*sin(28) = 19.154 m/s
Horizontal component of launch velocity is
u = (40.8 m/s)*cos(28) = 36.024 m/s
At maximum height, the vertical component of velocity is zero, but the horizontal component remains the same because aerodynamic resistance is ignored.
Given: m = 0.15 kg, mass of baseball
The kinetic energy at maximum height is
KE = (1/2)*m*u²
= (1/2)*(0.15 kg)*(36.024 m/s)^2
= 97 .33 J
Answer: 97.3 J (nearest tenth)