C) alternating current .
<span>
B)direct current </span>
Answer:
0.29 m
Explanation:
9 mm = 0.009 m in diameter
Cross-sectional area
Let the tensile modulus of Nickel .
The elongation of the rod can be calculated using the following formula:
<span>Water is known as the universal solvent because it is capable of dissolving a variety of substances, more than any other liquid.
Hope this helps!</span>
When the angle of the ramp increases, the weight of the box acting perpendicular to the ramp decreases.
<h3>
Normal reaction of the box</h3>
The normal reaction of the box is due to weight of the box acting perpendicular to the ramp.
Fn = Wcosθ
<h3>when the angle of the ramp = 30⁰</h3>
Fn = Wcos(30)
Fn = 0.866W
<h3>when the angle of the ramp = 45⁰</h3>
Fn = W x cos(45)
Fn = 0.7071W
Thus, when the angle of the ramp increases, the weight of the box acting perpendicular to the ramp decreases.
Learn more about normal reaction here: brainly.com/question/18292235
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