a caliper is used to make a precise measurement of length within tubing or on nuts/bolts, or anything really
<h3>An electric current consists of moving</h3>
<h2>ANSWER</h2>
A) atoms
<h3>
<em><u>B) electrons</u></em></h3>
C) elements
D) molecules
Answer:
Correct option is
B
3
20
cm
Given; Focal length, f=20cm
Object distance, u=−10cm
Using mirror formula.
v
1
+
u
1
=
f
1
v
1
=
f
1
−
u
1
=
20
1
−
−10
1
(∵u=−10)
=
20
1
+
10
1
=
20
3
⇒v=
3
20
cm
As this is the projectile motion means the motion of object under constant acceleration, so we use all eq. of motion under constant acceleration.
Angle above horizontal=θ= 35°
Initial speed= v₁ = 25 m/s
Time of flight= t= 2.55 s
Now,
from eq. of motion
x=x₁ + (v₁*cosθ)(t)+1/2 *a*t²
As, there is no acceleration in horizontal direction so a=0 and also initial displacement x₁=0
x= 25*cos(35)*2.55
x=52.22 m