A 1600 kg sedan goes through a wide intersection traveling from north to south when it is hit by a 2000 kg SUV traveling from ea
st to west. The two cars become enmeshed due to the impact and slide as one thereafter. On-the-scene measurements show that the coefficient of kinetic friction between the tires of these cars and the pavement is 0.75, and the cars slide to a halt at a point 5.42 m west and 6.37 m south of the impact point.How fast was sedan traveling just before the collision? How fast was SUV traveling just before the collision?
1 answer:
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Answer:
Decrease
Explanation:
I = Current = 3.7 A
e = Charge of electron =
n = Conduction electron density in copper =
= Drift velocity of electrons
r = Radius = 1.23 mm
Current is given by
The drift speed of the electrons is
From the equation we can see the following
So, if the number of conduction electrons per atom is higher than that of copper the drift velocity will decrease.
Answer:
Explanation:
A number of the form
can be re-written in the radical form as follows:
In this problem, we have:
a = 1,250
m = 3
n = 4
So, if we apply the formula, we get
Then, we can rewrite 1250 as
So we can rewrite the expression as