Answer:
≈20.9 km/hr
Explanation:
Average speed is the distance divided by time.
The train travels 50 km in 3 hours, then 96 km in 4 hours. So overall, the train travels 146 km in 7 hours. The average speed is:
146 km / 7 hr ≈ 20.9 km/hr
Answer:633.8 KJ
Explanation:
Given
mass of water
Initial temperature
Final temperature
Specific heat of water =4190 J/kg-k
heat of vaporization
Heat required for process=heat to raise water temperature from 20 to 100 +Heat to vapourize water completely
Q=mc
Q=
Q=
Q=
No, light can't cause the butterfly's wing's to glow. Explanation: Butterflies contain wings which are of different colors for attractiveness and also to show warning alarm for it's predator.
Answer:
D. 10 seconds
Explanation:
All Houston Methodist Hospital buildings employs the use of EPSS(Emergency Power Supply System). This system employs the use of an emergency power generator that turns on to supply emergency power after normal power shuts down within 10 seconds during power outage.
Due to it being used in a hospital the importance of this emergency power system cannot be overemphasized as it is used to provide power supply to hospital equipment such as life support machines etc.
Answer:
Explanation:
Given
Length
frequency
Tension in the string
Wave speed in a string is given by
where
wavelength for this wave
and