Answer:
38.1 N
Explanation:
The electrostatic force between two charged objects is given by:
where
k is the Coulomb's constant
q1 and q2 are the two charges
r is the separation between the two objects
In this problem, we have
so, the electrostatic force is
Answer:
F = 1024 N
Explanation:
Given that,
Mass of the cart, m = 80 kg
Radius of the loop, r = 5 m
Speed of the cart, v = 8 m/s
To find,
the force exerted on the track on the cart.
Solution,
The force exerted on the track on the cart is called centripetal force. When an object moves in a circular path it possess centripetal force. It is given by :
F = 1024 N
So, the force exerted on the track on the cart is 1024 N.
i think its a, good luck on your test
Explanation:
The average speed is the displacement of a particle divided into a time in which the displacement occurs. Instead, instantaneous speed is the limit of the average speed as the time interval approaches zero.
<u><em>In physics expressions </em></u>
Instantaneous speed=
b) Speed denotes distance traveled divided by time, and instantaneous speed measures how quickly and in which direction does it move
Answer:The Taller one
Explanation: Air drag(friction) also known as air resistance,the opposing force acting against the force of gravity, if a falling Object have a high air drag it will mean the object have a high air resistance. The higher the air resistance the higher the impact of the force of gravity on an object. The force of gravity will act to want to overcome the opposing force in order to bring the Object or the taller person down.