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NikAS [45]
3 years ago
14

A person spins a tennis ball on a string in a horizontal circle (so that the axis of rotation is vertical). At the point indicat

ed below the ball is moving in the z direction (out of the page) and is given a sharp blow vertically downward (-y direction). In which direction does the axis of rotation tilt toward after the blow
a. x- direction
b. y- diraction
c. z- direction
Physics
1 answer:
Ilya [14]3 years ago
5 0

Answer:

direction does the axis of rotation tilt toward after the blow is the z- direction

Explanation:

This is because

Due to the blow, there is a impulse imparted on the ball which gives a change in linear momentum () in the x direction

Thus When cross product of momentum in x direction is taking with r vector, we will get resultant in z direction. Hence change in angular momentum will be z direction.

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2 years ago
Calculate their densties in Si unit.<br>200mg,0.0004m​
Kryger [21]

Question: calculate their densties in Si unit.

200mg,0.0004m​³

Answer:

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Explanation:

Applying,

D = m/V........................ Equation 1

Where D = density, m = mass, V = volume.

From the question,

Given: m = 200 mg = (200/1000000) kg = 2.0×10⁻⁴ kg, V = 0.0004 m³ = 4.0×10⁻⁴ m³

Substitute these values into equation 1

D = (2.0×10⁻⁴ kg)/(4.0×10⁻⁴)

D = 2/4

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Hence the density in S.I unit is 0.5 kg/m³

3 0
2 years ago
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3 0
3 years ago
Which is classified as an inner transition element
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The weight of an object on Earth is 350 newtons. On Mars, the same object would weigh 134 newtons. What is the acceleration due
sineoko [7]
W = mg = 350 newton
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on mars
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g = W/m = 134/35.71 = 3.75 meters/second2
4 0
3 years ago
Read 2 more answers
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