Answer:
(C) Equal to 1.44 watt
Explanation:
We have given energy dissipated through the resistor = 1.44 watt
We have to find the energy supplied by the battery
From Telegence theorem we know that energy dissipated through resistor is equal to the energy supplied
As energy supplied is given as 1.44 watt
So energy supplied by the battery will be equal to 1.44 watt
So option (c) will be correct answer
Higher-level consumers get the most energy from food they eat.
An example is a lion eating a zebra. The zebra has more energy than a handful of grass, which has almost none to offer.
Answer:
The pitch increases
Explanation:
This effect is called Doppler effect. Doppler effect occurs when the source of a wave (such as a sound wave) moves relative to a stationary observer. In particular, two situations can occur:
- When the sound source moves towards the observer, there is a decrease in the apparent wavelength as seen from the observer; since frequency is inversely proportional to wavelength, the observer hears a sound with apparent higher frequency, which corresponds to a higher-pitch sound.
- When the sound source moves away from the observer, there is an increase in the apparent wavelength as seen from the observer; since frequency is inversely proportional to wavelength, the observer hears a sound with apparent lower frequency, which corresponds to a lower-pitch sound.
In this case, the sound source is approaching you: so we are in the 1st situation, therefore the pitch of the sound increases.
Answer:
The hot coffee has a higher temperature, but not a greater internal energy. Although the iceberg has less internal energy per mass, its enormously greater mass gives it a greater total energy than that in the small cup of coffee.
Explanation:
The time taken for the bus to travel 95.1 m is 2.8 s
<h3>How to determine the final velocity</h3>
- Initial velocity (u) = 26.8 m/s
- Acceleration (a) = 4.73 m/s²
- distance (s) = 95.1 m
- Final velocity (v) = ?
v² = u² + 2as
v² = 26.8² + (2 × 4.73 × 95.1)
v² = 1617.886
Take the square root of both sides
v² = √1617.886
v = 40.2 m/s
<h3>How to determine the time</h3>
- Initial velocity (u) = 26.8 m/s
- Acceleration (a) = 4.73 m/s²
- Final velocity (v) = 40.2 m/s
- Time (t) = ?
v = u + at
40.2 = 26.8 + (4.73 × t)
Collect like terms
4.73 × t = 40.2 - 26.8
4.73 × t = 13.4
Divide both side by 4.73
t = 13.4 / 4.73
t = 2.8 s
Learn more about velocity:
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