- The net force acting on the box is 6N
<h3>Explain the concept?</h3>
- The net force on an object is the sum of all the individual forces acting on it.
- If two opposing forces act on an object, the net force is the difference between the two forces.
- When two forces act in the same direction on an object, the net force is the sum of the two forces.
Here the two force 3N and 3N acting on same direction, so
net force = 3N + 3N
= 6N
Forces that are balanced are those that are opposite in direction and equal in size, but here the equal forces acts in same direction so it is unbalanced
To learn more about net force refer to :
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Answer:
Part B)
v = 4.98 m/s
Explanation:
Part a)
As the ball is rolling on the inclined the the friction force will be static friction and the contact point of the ball with the plane is at instantaneous rest
The point of contact is not slipping on the ground so we can say that the friction force work done would be zero.
So here in this case of pure rolling we can use the energy conservation
Part b)
By energy conservation principle we know that
initial kinetic energy + initial potential energy = final kinetic energy + final potential energy
so we will have
here in pure rolling we know that
now from above equation we have
now we have
now plug in all values in it
Answer:
962.5 Hz
Explanation:
given,
frequency = 8.94 GHz
speed of the trap = 32.3 m/s
frequency shift = ?
frequency of shift is calculated using formula
c is the speed of light
f_o is the frequency of the radar gun
the frequency of shift is equal to 962.5 Hz
Answer:
Kinda? Depends what the question is fully asking
Explanation:
Acceleration is a change in velocity. So I guess if the velocity of something is -2 m/s and its positively accelerating at a value of +1 m/s, then that means every second its velocity changes by +1m/s.
So that -2 m/s thing after one second will be going -1 m/s.
After another second it'll be going 0 m/s.
After another itll be going +1 m/s and so on.
So at one point for a brief moment, it can have an acceleration but be at 0 m/s velocity.
It is true that as the frequency of sound waves increases, the wavelength of the sound waves decreases.