First let's convert the time in seconds:
The current is defined as the quantity of charge flowing through a certain section of a circuit per unit of time:
Using I=10 A, and
, we can find the amount of charge flown through the hair dryer in this time:
The charge of a single electron is
, so the number of electrons flown through the hair dryer is the total charge divided by the charge of a single electron:
Answer:
Explanation:
Given that,
Spring constant k=200N/m
Compression x = 15cm = 0.15m
Attached mass m =2kg
Coefficient of kinetic friction uk= 0.2
The energy in the spring is given as
U =½kx²
U = ½ × 200 × 0.15²
U = 2.25J
Force in the spring is given by Hooke's law
F = ke
F = 200×0.15
F = 30N
The weight of body which is equal to the normal is give as
W = mg
W = 2 × 9.81
W = 19.62N
W = N = 19.62 Newton's 2nd Law
From law of friction,
Fr = uk•N
Fr = 0.2 × 19.62
Fr = 3.924
Using newton second law again
Fnet = F - Fr
Fnet = 30 - 3.924
Fnet = 26.076
Work done by net force is given as
W = Fnet × d
W = 26.076d
Then, the work done by this net force is equal to the energy in the spring
W = U
26.076d = 2.25
d = 2.25/26.076
d = 0.0863m
Which is 8.63cm
So the box will slide 8.63cm before stopping
if your vehicle begins to slide or skid in the rear, you should steer in the direction that the rear is sliding to.
<h3>What should you do if the rear end of the vehicle starts to slide or skid?</h3>
In the case above, a person need to Look as well as steer in the direction that the person want the front of the vehicle to go.
Note that in the case above;
Do stay way from the brake pedal and never apply the brakes.
- Steer in the the same direction as the rear of the vehicle that is known to be sliding. This will give room for the vehicle to go straight instead of going sideways.
- Then make sure to get ready to steer in the opposite direction if the vehicle is one that begins swerving in the other direction.
Therefore, if your vehicle begins to slide or skid in the rear, you should steer in the direction that the rear is sliding to.
Learn more about slide or skid from
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Explanation:
In series combination
R = R1 + R2 + R3 + ...+ Rn
In parallel combination
1/R = 1/R1 + 1/R2 + 1/R3 + ...+ 1/Rn
