Boiling water has a lot more heat than the oven's air (even though the air has a higher temperature). ... A match has a greater temperature than the iceberg because the average molecule in the match is moving faster than the average molecule in the iceberg
Answer:
Electron groups could be considered as Lone pair electrons and bonded pairs of electrons.
Answer: Option D & B
Explanation:
The two or more electrons can be bonded by single bond, double bond, covalent bond of electrons can simply be lone pair of electrons. Unshared pair of electrons are generally termed as lone pair of electrons in an atom which are generally present in the outermost shell of atoms. Hence electron groups can be determined by bonded pairs and lone pairs of electrons.
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Answer: The angular speed w of the loop = 181 rad/s
Explanation:
Given that;
Area A = 0.193 m2
Magnetic field B = 0.374 T
E.m.f = 9.24v
Ø = 45 degree
According to Faraday's law when the magnetic flux linking a circuit changes, an electromotive force is induced in the circuit proportional to the rate of change of the flux linkage.
Using the formula
E.m.f = NABwcosØ
Where w = angular velocity.
Let assume that N = 1 then,
9.24 = 0.193 × 0.374 × w × cos45
9.24 = 0.051w
w = 9.24/0.051
w = 181 m/s
Therefore, the angular speed w of the loop = 181 rad/s
Answer:
Norma’s average speed is 41.9 km/h.
Explanation:
The average speed is given by:
![\overline{v} = \frac{d_{T}}{t_{T}}](https://tex.z-dn.net/?f=%20%5Coverline%7Bv%7D%20%3D%20%5Cfrac%7Bd_%7BT%7D%7D%7Bt_%7BT%7D%7D%20)
Where:
: is the total distance
: is the total time
We can find the total distance as follows:
Now, the total time is:
Hence, the average speed is:
![\overline{v} = \frac{d_{T}}{t_{T}} = \frac{289 km}{6.9 h} = 41.9 km/h](https://tex.z-dn.net/?f=%20%5Coverline%7Bv%7D%20%3D%20%5Cfrac%7Bd_%7BT%7D%7D%7Bt_%7BT%7D%7D%20%3D%20%5Cfrac%7B289%20km%7D%7B6.9%20h%7D%20%3D%2041.9%20km%2Fh%20)
Therefore, Norma’s average speed is 41.9 km/h.
I hope it helps you!