Answer
A
Explanation:
Weight = Mass x Acceleration due to gravity
Weight = 1000 x 9.81
= 9810 or 9.81x10^ 3
Explanation:
<em>A.</em><em> </em><em>Stems</em><em> absorb water from the soil.</em>
<em>B.</em><em> </em><em>Stems</em><em> transport water and minerals.</em>
<em><u>Hope</u></em><em><u> this</u></em><em><u> helps</u></em><em><u> you</u></em>
<em><u>have</u></em><em><u> a</u></em><em><u> good</u></em><em><u> day</u></em><em><u>.</u></em>
As the plastic sphere is charged, therefore it experience an electric force when placed in an electric fields and also experiences gravitational force acts downward so the electric force must act upward.
Let is electric force and is gravitational force.
If these forces are balanced, therefore
or
Given, and .
Substituting these values in above equation we get,
Thus, the magnitude of electric field is .
As the charge is negative, the electric field at the location of the plastic sphere must be pointing downward.
Answer:
25 cm
Explanation:
Since, in the question it is given that the final image after reflection through the convex lens and then the reflection by the plane mirror is formed at the pinhole itself.
This means that the pinhole must be at the focus of the convex lens, such that the lens makes the ray perpendicular to the mirror and hence focal length of the lens = 25 cm.
This is a statement not a question .