Answer:
Pressure exerted on the wall is 8775 kgm/s²
Explanation:
Parameters given:
Time = 1s
Number of molecules: 5*10²³
Area: 8cm² = 8*0.0001 = 0.0008m²
Speed of molecules: 300m/s
Mass of N₂ molecule: 4.68 x 10⁻²⁶ kg
Pressure = Force/Area
Total pressure of N molecules will be:
Pressure = Force*Number of molecules/Area
Force is given as:
Force= mass*acceleration
And acceleration is:
Acceleration = velocity/time
Therefore,
Force = (mass*velocity)/time
Pressure = (mass*N*velocity)/(Area*time)
Pressure = (4.68 x 10⁻²⁶*5*10²³*300)/(0.0008*1)
Pressure = 7.02/0.0008
Pressure = 8775 kgm/s²
Can someone pls help us with this question I need the answer too
Answer:
Launch velocity of the fleas = 1.80 m/s
Explanation:
Optimal launch angle is the angle that guarantees the maximum horizontal distance covered.
Optimum launch angle = 45°
The horizontal distance covered by a projectile is given as Range
R = (u² sin 2θ)/g
u = initial velocity of the projectile (flea) = ?
R = range = 33 cm = 0.33 m
θ = 45°
2θ = 2 × 45° = 90°
Sin 90° = 1
g = acceleration due to gravity = 9.8 m/s²
R = (u²/g)
u² = Rg = 0.33 × 9.8 = 3.234
u = 1.80 m/s
Hope this helps!!!
Power = (voltage) x (current)
350 watts = (120 volts) x (current)
350 watts / 120 volts = current
current = 2.917 Amperes continuously