A land form is a natural feature of earths surface and a land mark is can be man-made or natural and it is used to mark something significant.
Force of a crate : 300 N
<h3>Further explanation</h3>
Given
0.25 meters wide and 1.5 meters long
Pressure = 800 Pa
Required
Force
Solution
P = F/A
A = 0.25 x 1.5
A = 0.375 m²
P = 800 Pa = 800 N/m²
Input the value :
F = P x A
F = 800 N/m² x 0.375 m²
F = 300 N
Answer:
B. closed series circuit because the resistors are one after the other and there is no open switch.
Explanation:
The Ptolemaic model of the universe describes the Earth as being at the center, stationary, with the Sun, the Moon, other planets, stars, and EVERYTHING rotating around it. <em>(B) </em>
The magnitude of the electric field inside the picture tube is 998.476 kN/C.
<h3>What is an electric field?</h3>
It is an area in the space where a charged particle experiences a force. It can be calculated by the formula,

Where,
= electric field produced
= charge = 
= distance = 
= Coulomb's constant = 
Put the values in the formula,

Therefore, the magnitude of the electric field inside the picture tube is 998.476 kN/C.
Learn more about the electric field:
brainly.com/question/3783640