If a person is pushing a desk across the room, then there is an applied force acting upon the object. The applied force is the force exerted on the desk by the person. The normal force is the support force exerted upon an object that is in contact with another stable object.
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Answer:
Explanation:
The gravitational field strength at a point is the gravitational force exerted per unit mass placed at that point. This means that the gravitational field strength, g {\displaystyle g} is equal to the force experienced by a mass of 1 kg in that gravitational field.
of the cart at the end of this 3.0 second interval?
Answer:
V = 20.5 m/s
Explanation:
Given,
The mass of the cart, m = 6 Kg
The initial speed of the cart, u = 4 m/s
The acceleration of the cart, a = 0.5 m/s²
The time interval of the cart, t = 30 s
The final velocity of the cart is given by the first equation of motion
v = u + at
= 4 + (0.5 x 30)
= 19 m/s
Hence the final velocity of cart at 30 seconds is, v = 19 m/s
The speed of the cart at the end of 3 seconds
V = 19 + (0.5 x 3)
= 20.5 m/s
Hence, the final velocity of the cart at the end of this 3.0 second interval is, V = 20.5 m/s
Kaya collects the data where the voltage is 6 V also the current is 0.3 A then the resistance in the circuit will be 20 ohms. Hence, option D is correct.
When put in an electromagnetic field, charged matter experiences a force due to the fundamental property of electric charge. Positive or negative electrical ions are possible. When two charges are in opposition to one another, they repel one another.
The term "neutral" refers to an object that has no net charge. The early understanding of the way charged particles interact is now referred to as classical electrodynamics, and it is still true for issues that do not demand taking into account quant phenomena.
As per the given information in the question,
Voltage, V = 6 V
Current, I = 0.3 A
Use the equation of ohm's law,
V = RI
6 V = R(0.3)
R = 6/0.3
R = 20 Ω.
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Answer:
1.8
Explanation:
Explanation:
Frictional force is an opposing force or a drag force. It is given by :
Where
μ is the coefficient of friction
N is the normal force
We know that the product of mass and the acceleration is called the force acting on the object. This means as the speed of the object increases, its drag force increases exponentially.
When the speed of an object increases, the attraction between the particles increases. Hence, the frictional drag increases.
Due to a number of variables, friction is worse as speed gets faster. The production of heat as a result of enhanced molecularinteraction is one of the key causes.
The frequency and force of surface molecule collisions increase as an object's velocity against another object increases, producing more heat.
This rise in temperature increases the stickiness or adhesion between the surfaces, which makes moving objects more difficult. Higher speeds can result in more pronounced relative movement of surface imperfections and microstructures, increasing interlocking and frictional forces.
Thus, as speed increases, friction increases due to a mixture of increased heat generation, adhesion, and interlocking effects.
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