Answer:
<em>The force is W</em>
Explanation:
<u>Sum of Electrostatic Forces</u>
The electrostatic forces have magnitude and direction as all physical forces do. Two point charges repel each other if their charges have the same sign, and they attract each other if their signs are opposite.
The bottom two charges and the top charges are negative, thus all the forces are repulsive. Charge 1 exerts a force F1, charge 2 exerts a force F2. Please look at the diagram in the figure below. The sum of both forces is shown with a red line. The horizontal component of the forces cancel each other, thus the total force goes upward.
The correct vector that best represents the net force is W
According to the given statement Final velocity when they stick together is 8.735i^ + 11.25j^
<h3>What is collision and momentum?</h3>
The unit of momentum is kg ms -1. Momentum is a vector parameter that is influenced by the object's direction. During collisions involving objects, momentum is a relevant concept. The final velocity before a collision between two objects equals the total motion after the impact (in the absence of external forces).
<h3>Briefing:</h3>
From conservation of momentum
Initial momentum = final momentum
m u +M U =(m+M) V
2000×25 i^ +1500×30 j^ =(2000+1500) V
V = 8.735i^ + 11.25j^
Final velocity when they stick together is 8.735i^ + 11.25j^
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The complete question is -
A 2000 kg truck is moving eastward at 25 m/s. it collides inelastically with a 1500 kg truck traveling southward at 30 m/s. they collide at the intersection. Find the direction and magnitude of velocity of the wreckage after the collision, assuming the vehicles stick together after the collision.
Answer:
Explanation:
Electricity is a flow of electrons. Electrons can flow across a vacuum. ... They need to leap because the vacuum is a perfect insulator and so there is no medium in which they can flow (like through a metal conductor) so they must aquire all of the energy necessary to cover the distance before they can escape the cathode.
The present day humans first appeared in the fossil record's around 66 million years ago soon after the cretaceous paleogene extinction event that eliminated 3 - quarters of plant and animals species on earth including many dinosaurs.
Answer:
D. priming.
Explanation:
<em>Priming </em>is defined as the introduction of an stimulus to obtain an unconcious response. It works by activating an association in memory.
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