Answer:
kJ
Explanation:
= mass of 1 mole of water = 18 g
= given mass of water = 50 g
Number of moles of water in the given amount is given as
= Heat of fusion of water = 6.01 kJ/mol = 6010 J/mol
= specific heat of water = 75.3 J/mol
= Change in temperature = 22.0 °C
Amount of heat required is given as
J
kJ
Explanation:
Explanation: When it is at the first point , it doesn't have a proper running force and energy is stored, therefore, potential energy is more. And at forth point, it has a large running force and it has now kinetic energy. And that's why point 1 has greater potential energy than point
Time = (distance) / (speed)
Time = (0.25 km) / (65 km/hr)
<em>Time = 0.00385 hour</em>
(That's 13.85 seconds.)
<u />
<u>Better way:</u>
Distance = 0.25 km
Distance = 250 meters
Speed = (65 km/hr) x (1000 m/km) x (1 hr/3600 sec)
Speed = 18.06 m/sec
Time = (250 m) / (18.06 m/s)
<em>Time = 13.85 seconds </em>
