The magnitude and direction of the object's displacement is 7 m and west direction respectively.
<h3>What is displacement?</h3>
The displacement of an object is the change in the position of the object. Displacement is a vector quantity because it has both magnitude and direction.
To find the sum of the vectors, we find the displacement of the vectors.
Initial position of the vector = 10 m east
final position of the vector = 3 m west
displacement of the vector = final position - initial position
displacement of the vector = 3 m - 10 m
displacement of the vector = - 7 m
magnitude of the displacement = 7 m
direction of the displacement = west
Thus, the magnitude and direction of the object's displacement is 7 m and west direction respectively.
Learn more about displacement here: brainly.com/question/2109763
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What’s the material of the ball? Let’s pretend it’s a tennis ball; 5, 6, 5.5
Answer:
sorry i cant figure this out
Explanation:
Answer:
The spectrum will shift to the red.
Explanation:
This phenomenon is called as 'Doppler effect'. Doppler effect occurs when a source of waves moves relative to an observer: when this happens, the wavelength of the observed wave appears shifted to the observer.
In this situation, the source of the waves is the star, which emits light (the waves). The observer is on Earth, and the star (the source of the waves) is moving away from the observer: therefore, the wavelength of the light observed by us is shifted with respect to the original wavelength of the light emitted by the star.
In particular, we have two different situations:
- when the star moves away, the wavelength increases, so it shift towards the red (which corresponds to light with longer wavelength) - this effect is called red-shift
- when the star moves towards us, the wavelenght decreases, so it shift towards the blue (which corresponds to light with shorter wavelength) - this effect is called blue-shift
In this situation, the star is moving away from us, so the correct choice is
The spectrum will shift to the red.
Answer:
The Force between the two charges is an attractive force of 16,000N
Explanation:
Expression for the electric force between the two charges is given by
F = (k*q1*q2) / r^2
Here, k = constant = 9 x 10^9 N*m^2 / C^2
q1 = - 2.0x10^-4C
q2 = + 8.0x10^-4C
r = 0.30 m
Substitute the given values in the above expression -
One charge is + and the other is a -, therefore the net force is an attractive force (opposites atract)
The attraction force is:
F= 9.0x10^9 * 2.0x10^-4 *8.0x10^-4 N/ 0.30^2
F= 16,000N