Question 181· Gas laws· JAMB
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Question 182· Gas laws· JAMB
A gas at 2 atm and 27 °C is heated at constant volume to 127 °C. Find its new pressure.
Explanation and discussionQuestion 183· Gas laws· JAMB
Charles's law states that, at constant pressure, the volume of a fixed mass of gas is proportional to its
Explanation and discussionQuestion 184· Gas laws· JAMB
A gas at 2 atm and 300 K is changed to 4 atm and 600 K. Its volume
Explanation and discussionQuestion 185· Gas laws· JAMB
A sealed gas cylinder at 3 atm and 7 °C is left in the sun until it reaches 77 °C. Find the new pressure.
Explanation and discussionQuestion 186· Gravitational field· JAMB
The gravitational force between two masses is F. If the distance between them is doubled, the force becomes
Explanation and discussionQuestion 187· Gravitational field· JAMB
Find the weight of a 60 kg man on a planet where the acceleration due to gravity is 4 m/s².
Explanation and discussionQuestion 188· Gravitational field· JAMB
A body weighs 50 N on Earth where g = 10 m/s². Its mass is:
Explanation and discussionQuestion 189· Gravitational field· JAMB
A geostationary satellite orbits the Earth with a period of
Explanation and discussionQuestion 190· Gravitational field· JAMB
The escape velocity from a planet depends on the
Explanation and discussionQuestion 191· Gravitational field· JAMB
Find the weight of a 60 kg astronaut on the Moon, where g = 1.6 m/s².
Explanation and discussionQuestion 192· Gravitational field· JAMB
The centripetal force that keeps a satellite in a circular orbit round the Earth is provided by
Explanation and discussionQuestion 193· Gravitational field· JAMB
If the masses of two bodies are both doubled while the distance between them stays the same, the gravitational force between them becomes
Explanation and discussionQuestion 194· Gravitational field· JAMB
A body has a mass of 6 kg on Earth. What is its mass on the Moon, where g is one-sixth of its value on Earth?
Explanation and discussionQuestion 195· Gravitational field· JAMB
If the distance between two masses is doubled, the gravitational force between them becomes
Explanation and discussionQuestion 196· Gravitational field· JAMB
At a height above the Earth's surface equal to the Earth's radius, the acceleration due to gravity becomes
Explanation and discussionQuestion 197· Gravitational field· JAMB
The escape velocity from the earth's surface is about
Explanation and discussionQuestion 198· Gravitational field· JAMB
A geostationary satellite has an orbital period of
Explanation and discussionQuestion 199· Heat transfer· JAMB
Heat from the Sun can travel through empty space because radiation
Explanation and discussionQuestion 200· Heat transfer· JAMB
Which surface is the best absorber of radiant heat?
Explanation and discussion
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