Answer:
104 kWh
Explanation:
To calculate the kWh you multiply power with the amount of hours.
So for this we take 5200 W × 20 = 104 000 Wh
Then change Wh to kWh so that makes 104 kWh
As frequency decreases , the wavelength will increase !!
frequency= speed of light ÷ wavelength
( inverse relationship )
Answer:
Correct answer: a = 0.4 m/s²
Explanation:
Given:
Initial velocity V₀ = 4 m/s
Achieved speed after time t V = 6 m/s
Time interval of movement t = 5 seconds
This is a uniformly accelerated motion to which the formula applies:
V = V₀ + a · t ⇒ a · t = V - V₀ ⇒ a = (V - V₀) / t
a = (6 - 4) / 5 = 2 / 5 = 0.4 m/s²
a = 0.4 m/s²
God is with you!!!
Answer:
Part a)
Part b)
Part C)
Part d)
Due to large magnitude of friction between road and the car the momentum conservation may not be valid here as momentum conservation is valid only when external force on the system is zero.
Explanation:
Part a)
As we know that car A moves by distance 6.1 m after collision under the frictional force
so the deceleration due to friction is given as
now we will have
Part b)
Similarly for car B the distance of stop is given as 4.4 m
so we will have
Part C)
By momentum conservation we will have
Part d)
Due to large magnitude of friction between road and the car the momentum conservation may not be valid here as momentum conservation is valid only when external force on the system is zero.