Answer:
Examples of physical properties are: color, smell, freezing point, boiling point, melting point, infra-red spectrum, attraction (paramagnetic) or repulsion (diamagnetic) to magnets, opacity, viscosity and density. (HOPED THIS HELPED ;)
Explanation:
Answer:
25 m/s * √(1.5 m/<em>g</em>) ≈ 9.78 m
Explanation:
When effects of air resistance is neglected, the motion can be modeled as
<em>x</em>(<em>t</em>) = 25 m/s * <em>t</em>
<em>y</em>(<em>t</em>) = 1.5 m - <em>g</em> * <em>t</em>²
based on a coordinate system where the x axis is on the water level (modeled as a plane), y axis being parallel to the gravitational force and the point of origin sitting at the point on the water surface directly below the exit of the slide. The <em>x</em> value is the horizontal travel we’re interested in. Time <em>t</em> begins at the exit of the slide by this rider. <em>g</em> is the gravitational acceleration.
At the time when the rider hits water, we know <em>y</em> = 0.
0 = 1.5 m - <em>g</em> * <em>t</em>² ⇔ <em>t</em> = ±√(1.5 m/<em>g</em>)
Since we are only interested in the non-negative (not past) time range, it’s <em>t</em> = √(1.5 m/<em>g</em>)
The horizontal travel is thus:
x(√(1.5 m/<em>g</em>)) = 25 m/s * √(1.5 m/<em>g</em>) ≈ 25 * √(1.5/9.81) m ≈ 9.78 m
Answer:
option C.
Explanation:
The correct answer is option C.
Vernier Calipers is a precision instrument that is used to measure the internal or outer dimensions or the depth of the material.
Vernier Caliper consists of two jaws, the main scale, and the vernier scale.
Graduation is present on both the main scale and vernier.
To measure the width of any material it should be placed in between the jaws and reading is taken with the help of the main scale and vernier scale.
The thickness of the candle can be measured using vernier calipers precisely.
Answer:
This is so confusing I tried solving but didn't understand it
Answer:
By observing the color of lines in the spectrum.
Explanation:
There are two types of lines in the spectrum explained below:
i) Bright lines: Bright lines occurs on the spectrum when atoms emit photons. These bright lines show the emission line spectrum.
ii) Dark Lines: Dark lines occurs on the spectrum when atoms absorb photons. These black lines show the absorption line spectrum.
Hence, by observing the color of lines it is possible to identify emission line spectrum and absorption line spectrum.