Answer:
J = 8.4 kg*m/s
Explanation:
The magnitude of the impulse, J, on the ball can be calculated using the following equation:
(1)
<u>Where:</u>
F: is the force = 12000 N
t: is the time = 0.70x10⁻³ s
So, by entering the values above into equation (1) we can find the impulse on the ball:
Therefore, the impulse on the ball is 8.4 kg*m/s.
I hope it helps you!
Answer:
a) F = - 6.75 10³ N, b) F = 1.35 10⁶ N
Explanation:
To calculate the force we can use the relation between the impulse and the moment
I = Δp
F t = m - m v₀
v_{f} = 0
F = -m v₀ / t
To calculate the time, let's use kinematics
a) Passenger with seat belt and airbag, braking distance x = 1 m
v² = v₀² - 2 a x
a = v₀² / 2x
a = 15²/2 1
a = 112.5 m / s²
v = v₀ - a t
t = v₀ / a
t = 15 / 112.5
t = 0.1333 s
Let's find the average strength
F = - 60 15 / 0.1333
F = -6750 N
F = -6.75 10³ N
b) Passenger without seat belt or airbag braking distance x = 5 mm = 0.005 m
a = v₀² / 2x
a = 15²/2 0.005
a = 22,500 m / s²
t = v₀ / a
t = 15/22500
t = 6.6667 10⁻⁴ s
The average strength is
F = - 60 15 / 6.6667 10⁻⁴
F = 1.35 10⁶ N
Answer:
0.02325 m^3
Explanation:
P1 = 100000Pa , v1 = 0.0279m^3
P2= 120000Pa . V2 = ?
as mass and temperature are constant using ratio method for Boyle'slaw
P2V2= P1V1
or V2= P1V1/P2
V2 = 100000×0.0279/120000
V2= 0.02325 m^3
The temperature rises of in the block if the current flows for 10 minutes is, 34.78K.
To find the answer, we need to know about the power of the electric heater.
<h3>How to find the temperature rise of in the block if the current flows for 10 minutes?</h3>
- We have given with the variables,
- We have an expression the heat given to the system as,
ΔT
- We have to find the temperature rise ΔT,
ΔT
Thus, we can conclude that, the temperature rises in the block if the current flows for 10 minute is 34.78K.
Learn more about the power of the electric heater here:
brainly.com/question/28050631
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