Answer:
here friction must be reduced when
B.) the axle of your car wheels while you are driving
Explanation:
Friction is a type of force which is required in many process and in those if we reduce the friction then the system may not work
So here we know that
A.) moving your mouse along the mousepad
Here we know that the mousepad is working when mouse runs on the pad and if it makes frictionless than it will not work
B.) the axle of your car wheels while you are driving
Here we must have to reduce the friction because here if motion of axle is smooth then it will have less energy loss
C.) you are climbing a steep ladder
While climbing on the steep ladder we must require large friction for balancing
D.) the surface of a park bench while you sitting on it
While sitting on the bench we require friction for our static equilibrium
so here friction must be reduced when
B.) the axle of your car wheels while you are driving
Answer:
The work done will be "763 J". A further explanation is given below.
Explanation:
The given values are:
Temperature,
i.e,
i.e.,
As we know,
⇒
On substituting the values, we get
⇒
⇒
⇒
⇒
then,
⇒
⇒
⇒
The ball needs to accelerate with a magnitude <em>a</em> (pointed towards the center of the circle) of
<em>a</em> = (5.0 m/s)² / (2.0 m) = 12.5 m/s²
Then the required tension <em>F</em> in the string would need to be
<em>F</em> = (2 kg) (12.5 m/s²) = 25 N
<span>
<u><em>Answer:</em></u>498.82 cg is equivalent to 4988.2 mg
<u><em>Explanation:</em></u>cg stands form centigrams
mg stands for milligrams
From the standards of conversion, to convert from centi to milli, we multiply the amount ny 10
<u>This means that:</u>
1 centigram = 10 milligram
To convert 498.82 cg to mg, all we have to do is <u>cross multiplication</u> as follows:
1 cg ..................> 10 mg
498.82 cg .........> ?? mg
498.82 cg = </span>
<span> = 4988.2 mg
Hope this helps :)</span>
Answer:
The power of sports car is 25 times power of older model car
Explanation:
Consider mass of the two cars are same and is denoted by m.
Kinetic energy of older model car is determine by the relation:
Kinetic energy of sports car is determine by the relation:
....(1)
Power is defined as energy per unit time.
According to the problem, the car has only kinetic energy. So, the power of old model and sports car are determine by the relation:
and
Here P₁ and P₂ are the power of old model and sports car respectively.
The ratio of power of these car is:
Substitute equation (1) in the above equation.