Answer:
Explanation:
All substances have characteristic physical and chemical properties. Physical properties are those that can be observed with the senses without changing the identity of the substance. Chemical properties describe how a substance can be changed into a new substance. Physical and chemical properties, such as color, density, boiling point, solubility, conductivity, and flammability, A. are always different between substances. B. depend on the amount of the substance. C. do not depend on the amount of the substance. D. have the same values for all substances.
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Answers
It's a quantitative observation because it includes numerical data.
Answer:
The new current in the straight wire is 4.98 A
Explanation:
Given;
initial magnetic force on the wire, F₁ = 0.017 N
initial current flowing on the straight wire, I₁ = 1.1 A
When the current in the wire is changed,
new magnetic force on the wire, F₂ = 0.077 N
the new current in the wire, I₂ = ?
Applying equation of magnetic force on conductor;
F₁ = I₁BLsinθ
F₂ = I₂BLsinθ
BLsinθ = F₁/I₁ = F₂/I₂
I₂ = (F₂I₁)/F₁
I₂ = (0.077 x 1.1) / 0.017
I₂ = 4.98 A
Therefore, the new current in the straight wire is 4.98 A
Answer:
B, he will fly off the other end
Explanation:
there is too much potential energy that transforms into kinetic energy for him to stay on the track.
Answer:
Explanation:
The velocity of the ball just before the collision with one end of the bar is:
As the bar is pivoted at its center and collision is entirely inelastic, final velocity is determined by the Principle of Angular Momentum Conservation:
![(5\,kg)\cdot (-15.342\,\frac{m}{s} ) = \left\{-\left[\frac{1}{12}\cdot (8\,kg)\cdot (4\,m)^{2}\cdot (\frac{1}{2\,m} )+(5\,kg)\right] + (5\,kg)\right\}\cdot v](https://tex.z-dn.net/?f=%285%5C%2Ckg%29%5Ccdot%20%28-15.342%5C%2C%5Cfrac%7Bm%7D%7Bs%7D%20%29%20%3D%20%5Cleft%5C%7B-%5Cleft%5B%5Cfrac%7B1%7D%7B12%7D%5Ccdot%20%288%5C%2Ckg%29%5Ccdot%20%284%5C%2Cm%29%5E%7B2%7D%5Ccdot%20%28%5Cfrac%7B1%7D%7B2%5C%2Cm%7D%20%29%2B%285%5C%2Ckg%29%5Cright%5D%20%2B%20%285%5C%2Ckg%29%5Cright%5C%7D%5Ccdot%20v)
The final velocity of the another ball is:
The maximum height of the other ball is:
