Physics Gravitation Level: High School
On a planet with an atmospheric scale height of one kilometer and a seal level pressure of 2 x 10^6 N/m^2 , Which of the following is true ?a. The top of the atmosphere is at 1 km
b. Pressure decreases by one-half for every kilometer of altitude increase above 1 –km
c. Sea level is at 1 -km
d. The atmospheric pressure at 0.5 km above the surface is 1.21 x 10^6 N/m^2
e. The atmospheric pressure at 0.5 km above the surface is 3.30 x 10^6 N/m^2
Physics Gravitation Level: High School
An astronaut has a weight W on the Earth . On a planet having twice the mass of the Earth and same radius as the Earth , the astronaut weighs :a. W^2
b. 4W
c. W
d. 2W
e. W/2
f. None of the above
Physics Gravitation Level: High School
Two spheres of mass 300kg and radius 0.200m are in deep space , sphere 1 is fixed and sphere 2 is replaced from rest a large distance away . Calculate the speed with which sphere 1 collides with the fixed sphere 2 .The gravitational potential energy of this system is -3.0 x 10^-5 J and gravitational force the sphere exert on each other is 1.50 x 10^-4 N.
Physics Gravitation Level: High School
A man weights 600N while on the surface of the Earth . If he is transported to the planet mythos , which has the same mass as Earth but a radius that is twice as large as Earths , his weight would be ?
Physics Gravitation Level: High School
Six identical physics books , each with a mass of 2.0 kg are taken to the moon , On the moon , their combined mass is ?
Physics Gravitation Level: High School
A ball is whirled on the end of a string in a horizontal circle at constant speed . Suddenly , the string breaks , Immediately after the strings breaks , the ball will ?Physics Gravitation Level: High School
The sun and a moon both have an effect on the tides . Which one has the larger effect , and why ?Physics Gravitation Level: High School
A full moon is just now rising . What time of day is it ? -Physics Gravitation Level: High School
What are the units for the constant G used in Newton’s law of universal gravitation ?
Physics Gravitation Level: High School
Object weights 20N on Earth . What is its approximate mass ?
Physics Gravitation Level: High School
Two artificial satellites are in circular orbits about the Earth , which of the two will be moving faster in its orbit ?
Physics Gravitation Level: High School
The mass of an apple on the Earth is 0.2 kg , On the moon , the mass of the same apple would be ?mass on moon = 0.2 kg
Physics Gravitation Level: High School
If you have a mass of 70 kilograms on earth, what will your mass be on the moon. The moon has an acceleration of gravity of 1.7 m/s2 . (70N, 70 kg, or none of these )M = 70 kg
Mass on moon = 70 kg (mass remain unchanged)Physics Gravitation Level: High School
According to Newton’s Law of Gravitation , if the distance between two bodies is doubled the attractive force between them becomes . (twice as large , half as large , four times as large , one quarter as large or unchanged . )
Physics Gravitation Level: High School
Calculate the period of a 2 meter long simple pendulum of the nine planets assuming there is no air resistance . Use 2p times the square root of L/g where L is 2.G (gravitational acceleration) is as follows for Mercury 3.713 m/s^2 Venus 8.87 x 10^4 m/s^2 Mars 3.713 m/s^2