Answer:
461 m/s
Explanation:
Given the string length of guitar, l = 0.90 m
Frequency , f = 256 Hz
Using frequency, wavelength and velocity relation as
v=f λ
Here λ is wavelength.
Now for guitar string the length must be equal to half of wavelength, so
λ = 2l
Therefor above formula becomes as
v = f×2l
Substituting the given values, we get
v =256×2×0.90
v = 460.8 m/s = 461 m/s
Thus, the wave moving back and forth along the string with velocity 461 m/s.
Answer:
The magnitude of the given vector is 
Explanation:
For any given vector 
The magnitude is given by

comparing with the given vector 
we get
x = 1, y = -2, z = 3
Thus the magnitude of vector A is

Answer:
1,000 N
Explanation:

Force exerted by the bullet on the rifle = 
F = 1000N
Contextual Way:
Newton's second law of motion.
F=m a
Now to solve based on the current info, we shall assume that:-
The force exerted on the bullet was uniform across the entire duration of bullet leaving the barrel, i.e., 0.003 seconds {Not necessarily true for real life applications as the force will not be uniform from the point of hammer impact till the point of leaving the barrel. In reality you will get a Force profile across that entire duration}
We are not distinguishing between bullet and cartridge. {What you shall hold in your hand and load in a revolver is a cartridge containing the gunpowder, bullet etc. The bullet is the projectile at the mouth of the cartridge that actually leaves the barrel and hit the target. So when you are weighing in real life, you are not weighing the bullet, rather the cartridge as a whole}
Getting back to the question
Impulse equation for the bullet
∫F∗dt=∫m∗dv
Average impulse delivered= Change in momentum of the bullet
Assuming average force delivery
Favg∗∫dt=m∗∫dv
Favg∗0.003=0.010∗300
Favg=300∗10/3
Favg=1000N
The magnitude of this vector is 15
A vector is a quantity or phenomenon that has two independent properties: magnitude and direction. The term also denotes the mathematical or geometrical representation of such a quantity. Examples of vectors in nature are velocity, momentum, force, electromagnetic fields, and weight.
The magnitude of a vector formula is used to calculate the length for a given vector (say v) and is denoted as |v|. So basically, this quantity is the length between the initial point and endpoint of the vector.
Let vector be = a
component of vector in x direction = 10 i
component of vector in y direction = 10 j
component of vector in z direction = 5 z
vector a = 10 i + 10 j + 5 z
magnitude of vector a = |a| =
= 15
To learn more about vector here
brainly.com/question/24256726
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Explanation:
Archimedes' principle states that the upward buoyant force which is exerted on body when immersed whether fully submerged or partially in the fluid is equal to weight of fluid which body displaces and this force acts in upward direction at center of mass of displaced fluid.
Thus,
<u>Weight of the displaced fluid = Weight of the object - Weight of object in fluid.</u>