Answer:
An electric chemical cell is not always needed to have a power circuit. But every other part is.
"increasing the distance through which the force is applied"
Answer:
<em>Only gravity acts on B but there is an additional residual force from the hand on A.</em>
Explanation:
All bodies are constantly under the effect of gravity. Gravity is what gives us weight here on earth. Gravity acts downwards, and helps to decrease the deceleration of a body moving up and accelerating a body that travels downwards. For the ball A, traveling upwards, the upwards movement is due to the force on it impacted on it from the hand. As A tries to go up, gravity tries to decelerate it until it will come to a stop and then fall downwards under gravity. For body B, descending down means that only gravity forces acts on it at that point, if we ignore buoyant forces and air resistance. And B accelerates as it falls down towards the juggler.
Answer:
23785m
Explanation:
V= 4780/9.9= 482.8km/h
d= v²/g = 482.8²/9.8= 23785m
A. It is the strongest force possible.
Explanation:
The force exerted on a charged particle moving in a region with a magnetic field is given by the following equation:
where
q is the magnitude of the charge
v is the velocity of the particle
B is the strength of the magnetic field
is the angle between the direction of the velocity and of the field
From the equation, we notice that:
- The force is maximum when the particle is moving perpendicular to the magnetic field, therefore when and
- The force is zero when the particle is moving parallel (or anti-parallel) to the magnetic field, therefore when and
Based on these observation, we can immediately conclude that the only correct option among the given choices is
A. It is the strongest force possible.
Learn more about magnetic fields:
brainly.com/question/3874443
brainly.com/question/4240735
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