Defining z axis up:
<span>area of base of cylinder A= pi r^2 </span>
<span>where r = 20 cm = .20 meter </span>
<span>height of cylinder = .10 meter </span>
<span>volume of cylinder V= pi r^2 h </span>
<span>= pi (.2)^2 (.1) </span>
<span>weight of cylinder W = g V = 10 V in Newtons </span>
<span>b) +W </span>
<span>c) -W </span>
<span>d) W/A in Newtons/meter^2 or Pascals</span>
Answer:
8 minutes sooner
Explanation:
Average speed of snail= 4cm/min
Distance to be covered = 160cm
Time taken for the journey = distance/speed
Time taken for the journey = 160/4
Time taken for the journey = 40 min
If it crawed an average speed of 5cm/min
Distance = 160 cm
Time for the journey = distance/speed
Time for the journey = 160/5
Time for the journey = 32 min
Its going to take the snail 40 min - 32 min to Kno how sooner it will taje it if the average speed is 5cm/min
40 min - 32 min = 8 min
Answer:
8377 turns
Explanation:
Given:
Mean radius of toroid = 26 cm
Circular cross-section radius, r = 1.9 cm = 0.019
Length of the wire, l = 1000 m
The number of turns (n) on the coil is given by
where,
l is the length of the wire
s is the circumference of the circular wire
⇒
or
or
n = 8376.57 or 8377 turns
hence, the number of turns on the coils is 8377
A pulley ,it the same concept is used to raise an elevator
Answer:
Power=50.17dioptre
Power=50.17D
Explanation:
P=1/f = 1/d₀ + 1/d₁
Where d₀ = the eye's lens and the object distance= 5.70m=
d₁= the eye's lens and the image distance= 0.02m
f= focal length of the lense of the eye
We know that the object can be viewed clearly by the person ,then image and lens of the eye's distance needs to be equal with the retinal and the eye lens distance and this distance is given as 0.02m
Therefore, we can calculate the power using above formula
P= 1/5.70 + 1/0.02
Power=50.17dioptre
Therefore, the power the eye's is using to see the object from distance is 5.70D
