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4)200cm/s

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Q: What is the approximate minimum stream velocity needed to move a particle with a diameter of 25.6 centimeters?
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What are Drift velocity and momentum relaxation time?

Drift velocity refers to a particle's average velocity being influenced by its electric field. Momentum relaxation time is the time required for the inertial momentum of a particle to become negligible.


Write newton's formula for velocity of sound in air?

If a be the amplitude of a particle executing SHM with an angular velocity w and yis the displacement, then velocity of the particle at any instant is given by u(t)=w J(a 2 y 2


Give example where the velocity of the particle is 0 and acceleration is maximum?

When a pendulum reaches its maximum elongation the velocity is zero and the acceleration is maximum


A wave that vibrates in a direction parallel to the direction of the wave itself is called a?

Disturbance in particle motion parallel to the wave velocity is called a longitudinal wave. Disturbance in particle motion perpendicular to the wave velocity is called a transverse wave.


Is it possible that a particle has zero velocity but still have a acceleration?

If the velocity equals zero, the acceleration is also zero because the velocity hasn't changed, thus, the particle isn't accelerating anywhere. This is not exactly true; at an instant in time the acceleration can be non-zero while the velocity is zero. However, this would change the velocity to non-zero after any amount of time. An example of this is when you throw a ball into the air: at it's highest point, the velocity is zero (it changes from going upward to going downward, passing through zero for an instant). However the acceleration is downward the entire time.

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What is the approximate minimum stream velocity needed to keep a 6.4-cm-diameter particle in motion?

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What is the approximate minimum water velocity required for sand particles with a diameter of 0.1 mm to be picked up and moved?

10 centimeters/second


How might speed at which a gas particle moves affects how quickly that gas particle escapes from the balloon?

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When is the velocity vector of a particle tangent to the path of the particle?

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What is the momentum of a resting particle?

Momentum = (mass) x (velocity)If the particle is at rest, velocity = 0, and momentum = 0.


What causes variation in velocity of particle?

Acceleration and so a force acting on the particle.


When does a particle in motion have non-uniform velocity?

That simply means that its velocity is changing.


If the velocity of a particle is nonzero can the particle's acceleration be zero?

yes. If the forces acting on the a moving particle are in equilibrium, (e.g. when a spherical object reaches terminal velocity (neglecting increased air resistance as it gets closer to the ground)) then the particle will be moving at a velocity, that is not 0, yet the velocity will remain constant, and the body will not accelerate or decelerate in any direction, and thus the acceleration is 0.


What is the approximate velocity of the sound in air?

the velocity of sound in the air is 300m/s


What is the approximate velocity of sound in the air?

the velocity of sound in the air is 300m/s


What is the value of orbital velocity?

the approximate value of orbital velocity is about 8km/hr.


Vector method to find out the acceleration of a particle is -wwrwhere angular velocity is w?

1) The position vector of a particle is r= (a cosώt) i+ (a sinώt) j. The velocity of the particle is and find the parallel position vector.