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Alex787 [66]
2 years ago
15

Consider a series of motion scenarios. Each scenario is accompanied by a short description and an arrow indicating the instantan

eous velocity. Assume that air resistance is negligible in every scenario. The only forces present in each scenario are gravity, surface (or normal) forces, and friction if indicated. Place the appropriate arrow, or zero, next to each scenario to indicate the direction of the net force acting on the block.

Physics
1 answer:
anygoal [31]2 years ago
7 0

The resultant force is obtained by taking into account the magnitude and direction of all the forces involved.

<h3>What is motion?</h3>

Motion refers to change in position with respect to time. The instantaneous velocity is the velocity at a given time during motion.

Since force is a vector quantity, we must note that the net force will point in a given direction after taken all other forces into account. The net/resultant force is the force tat will have the same effect in magnitude and direction as all the forces taken together.

Learn  more about resultant force: brainly.com/question/7041906

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Why do you think festival dances should be introduced to the younger generations of today​
Nimfa-mama [501]

Answer:

Festival dances should be introduced to the younger generations of today because they teach them about different cultures. Festival dances are also a way to be active and have a fun time.

Explanation:

4 0
3 years ago
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Elephants can communicate over distances as far as 6 km by using very low-frequency sound waves. What is the wavelength of a 10
harkovskaia [24]

The characteristics of the sound waves allow to find the result for the wavelength is:

         λ = 34.29 m

The sound wave is a longitudinal traveling wave, where the speed of the wave depends on the air temperature.

         v = v_o \sqrt{1 + \frac{T}{273} }  

where v₀ is the speed of sound for T = 0ºc v₀ = 331 m / s.

indicate that the temperature is T = 20ºC, let's find the speed of the traveling wave.

        v = 331 \sqrt{1 + \frac{20}{273} }  

        v = 342.9 m / s

The speed of sound is related to wavelength and frequency.

       v = λ f

        λ = \frac{v}{f}

Let's calculate

        \lambda = \frac{342.29}{10}  

        λ  = 34.29 m

In conclusion using the characteristics of sound waves we can find the result for the wavelength is:

          λ = 34.29 m

Learn more here:  brainly.com/question/21995826

3 0
2 years ago
If you drop a silver dollar off a building and it hits the ground in 10 seconds, how fast was the coin going just before it hit?
Illusion [34]
Objects in free fall, disregarding terminal velocity, accelerate at 9.8(m/s)/s. so for every second it was falling, it gained 9.8m/s in speed. 9.8 * 10 = 98m/s
4 0
3 years ago
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Compare the force of air resistance and the force of gravity on an object falling at its terminal velocity.
Sholpan [36]
The viscous force on an object moving through air is proportional to its velocity.
The only forces acting on an object when falling are air resistance and its weight itself. The weight acts vertically downwards whereas air resistance acts vertically upward.
Let F be the viscous force due to air molecules, B be buoyant force due to air and W be the weight of falling object. Initially, the velocity of falling object and hence the viscous force F is zero and the object is accelerated due to force
(W-B). Because of the acceleration the velocity increases and accordingly the viscous force also increases. At a certain instant, the viscous force becomes equal to W-B. The net force then becomes zero and the object falls with constant velocity. This constant velocity is called terminal velocity.
Thus at terminal velocity, air resistance and force of gravity becomes equal.
7 0
3 years ago
In which direction does a bag at rest move when a force of 20 newtons is applied from the right?
worty [1.4K]

Answer:

in the direction of the applied force

Explanation:

8 0
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