a bus accelerates at -0.5 m/s^2 for 12.5 seconds if the bus had an initial speed of 31 /s what is its new speed
2 answers:
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Answer
given,
mass of the stick = 290 grams = 0.29 Kg
Force on the stick on one side = F = 9 N
force acting perpendicular to stick.
magnitude of acceleration
rate of change of angular momentum is equal to Force
rate of change of angular momentum = 9 N
F = m a
a = 31.034 m/s²
Direction of motion will in the direction of force application or in the direction of change of velocity
Answer:
<h2>The water tank have to support a pressure of 50,456 Pa.</h2>Explanation:
To design the cylindrical, pressurised water tank, we need to calculate the total pressure that it's being applied to tank, in order to know how strong we need to make it.
The total pressure (P) on the tank is always the sum of all pressures that are involved, external air pressure (P1), inside pressure (P2) and the pressure due to the mass of water (P3).
So, The external air pressure (P1) is 95.0 kPa.
The inside pressure (P2) is 110 kPa.
The pressure due to the mass of water (P3) will be calculated with: ; where p is density of the water, g is the gravity and h the height.
Using the values given g = 3.71 m/s2; h = 13.6 m and p = 1000 kg/m3.
Therefore, we need to design an water tank strong enough to endure a pressure of 50,456 Pa.