Physics question and answers for May 07, 2024
- Q A body is thrown vertically upwards with a velocity v from the surface of the earth Show that the height h 2 R 28R 2i up to which the body...
- Q 10 A planet of mass Mis in an elliptical orbit around the sun with time period T The semi major axis and semi minor axis are equal to a and...
- Q 1 At what height from the surface of earth the gravitation potential and the value of g are 5 4 x 107 J kg and 6 0 m s 2...
- Q 1 A satellite of mass 1500 kg is revolving around earth The radius of earth is 6400 km Minimum and maximum distance of satellite from surface of earth are 1200...
- Q Q17 The gravitational field in a region is given by E 31 41 N kg Find out the work done in joule in displacing a particle by 1 m along...
- Q A rocket starts vertically upward with speed vo Show that its speed v at height h is given by u u 2gh h 1 R where R is the radius...
- Q What will be the value of the acceleration due to gravity g at a height 3200 km from the earth while its value at the earth is 9 8 m...
- Q An orbiting satellite will escape if A its speed is increased by 2 1 100 B its speed in the orbit is made 1 5 times of its initial value...
- Q A satellite is revolving round a planet of mass M at a distance R OP from its centre O When satellite is at point P by some internal mechanism its...
- Q If the earth stops rotating about its axis then what will be the change in the value of g at a place in the equator plane Assume that the earth...
- Q The average distance of the sun from the earth is 1 5 108 km and the average distance of the moon from the earth is 384000 km If the attraction...
- Q The ratio of acceleration due to gravity at a depth h below the surface of earth and at a height h above the earth surface of earth hradius of earth...
- Q A solid sphere of mass M and radius R has to be disintegrated into infinite point masses at infinite separation The work done for this process will be G universal...
- Q A cell of e m f e having an internal resistance r is connected to an external resistance R The potential difference V across the resistance R varies with R...
- Q Suppose the acceleration due to gravity at the earth s surface is 10m s and at the surface of mars it is 4 0 m s A 60kg passenger goes...
- Q 5 A spaceship orbits around a planet at a height of 20 km from its surface Assuming that only gravitational field of the planet acts on the spaceship what will...
- Q 7 A person stands on a spring balance at the equator a By what fraction is the balance reading less than his true weight b If the speed of earth...
- Q A satellite is revolving around earth with orbital speed vo If it stops suddenly find the speed with which it will strike the surface of earth v escape velocity I...
- Q Gravitational potential at the centre of a solid sphere is V Now radius of this sphere is made double its present value without changing its mass Then the potential on...
- Q A space vehicle is in a circular orbit about the earth Mass of the vehicle is 3000 kg and radius of orbit is 2Re 12800 km It is desired to...
- Q The electrical force like the bodies force decreases inversely as the square of the distance between charged
- Q Problem 3 A meteoroid is heading directly to the Earth The speed of the meteroid is 2000 m sec when it is at a distance of 3 84 x 10...
- Q kg Mars has a mass of about 6 57 1023 and its moon Phobos has a mass of about 9 x 10 5 kg If the magnitude of the gravitational...
- Q Maun 1 989 x103 kg Raun 696 340 km Meath 5 972 x 10 4 kg REarth 6 371 km G 6 67x10 11 c 3 0 x 10 m...
- Q spacecraft Wh a mass of about 400 000 kilograms kg Brett thinks Earth would exert the same gravitational force on a less massive spacecraft as it does on the ISS...
- Q F Gm1m r2 1 ac 2 T T GM R 1 Vesc 2GM R Gm1m KE mv U E KE U Ecircular Gm m 1 2r T G 6 674...
- Q Problem 7 Planets Beyond the Solar System On October 15 2001 a planet was discovered orbiting around the star HD 6888 Its orbital distance was measured to be 1 05...
- Q Problem 6 Two satellites are in circular orbits around a planet that has radius 9 x 10 m One satellite has mass 68 0 kg orbital radius 7 x 107...
- Q Problem 2 A exoplanet is orbiting its parent star The radius of the orbit of the planet around the sta is 7 9 x 10 m and the orbital period...
- Q F R 7 2 Gm1m G 6 674 x 10 N m kg KE mv U 7 roblem 1 Let s assume the Earth and Jupiter orbit the Sun in...
- Q A Type la supernova has an effective temperature of 7000 K and the speed of the 5000 km s What is its abolute magnitude if it is 62 days old...
- Q Geostationary satellites are placed into orbit so that their period of rotation exactly matches Earth s rotation They take 24 h to make one rotation These satellites are permanently fixed...
- Q 2 A Determine the magnitude and direction of the gravitational field strength at a point in space 7 4 x 107 m from the center of Earth
- Q 4 Determine the mass of Earth using the magnitude of the gravitational field strength at the surface of the Earth g 9 8 m s the distance r between Earth...
- Q 3 Eris is the ninth most massive body orbiting the Sun It is more massive than Pluto and three times farther away from the Sun Eris is estimated to have...
- Q 7 A 0 0015 C particle charge feels a downward electrical force of 1 0 x 10 N at Earth s surface a What is the strength of the electric...
- Q 6 What does it mean if an object is in free fall List an example
- Q In the parallel Universe X the force of gravitational attraction varies directly with the two masses m1 and m2 and inversely with the cube of the distance between them It...
- Q 13 A hot air balloon is held down to keep it From accelerating upward
- Q The following diagram represents Neptune Uranus and the Sun in a straight line Neptune is 1 63 x 10 2 meters from Uranus Sun Uranus Neptune 1 63x10 m Not...
- Q When a satellite is a distance R from the center of Earth the force due to gravity on the satellite is F What is the force due to gravity on...
- Q a Find the magnitude of the gravitational force in N between a planet with mass 6 75 x 1024 kg and its moon with mass 2 35 x 1022 kg...
- Q You are located inbetween 2 stars of different masses at a specific distance from each star Note each of the two stars will pull you in opposing directions Which pair...
- Q You observe the light from a spectroscopic binary star system and determine the two stars have different masses However which of the following must they have in common as they...
- Q 5 Looking at the diagram below in which part of the orbit is the planet moving the fastest a A b B e none of the above C C d...
- Q a If gold were sold by weight would you rather buy it in Denver or in Death Valley O Denver O Death Valley O no difference b If it were...
- Q If I weigh 741 N on Earth at a place where g 9 80 m s 2 and 5320 N on the surface of another planet what is the acceleration...
- Q A stone is held at a height h above the ground A second stone with four times the mass of the first one is held at the same height The...
- Q HINT a Find the magnitude of the gravitational force in N between a planet with mass 7 00 x 1024 between their centers is 2 40 x 108 m N...
- Q 7 In the first section you used ac to find the Moon s acceleration is 0 0027099 m s Using this as your measured value what is the percent difference...
- Q 3 Two small balls A and B attract each other gravitationally with a force of magnitude F If we now double both masses and the separation of the balls what...
- Q What is the gravitational force between the Earth mEarth 5 98 x 1024 kg rEarth 6 378 x 106 m and a 15 000 kg satellite in Earth s orbit...
- Q 5 Explain why an astronaut orbiting the earth feels weightless
- Q 5 Now let s revisit the Moon Use Universal Gravitation to calculate the centripetal acceleration of the Moon Here are some numbers to help The radius of the Moon s...
- Q 10 Describe the process that formed the planets
- Q Two small balls A and B attract each other gravitationally with a force of magnitude F If we now double both masses and the separation of the balls what will...
- Q Describe the process that formed the plane Singo
- Q 3 Determine the force of gravity between Earth and a 5 500 kg elephant The mass of Earth is 6 0 x 1024 kg and the distance between the elephant...
- Q tional Attraction Many physical phenomena obey inverse square laws That is the strength of the quantity is inversely proportional to the square of the distance from the source Isaac Newton...
- Q 5 Sputnik the first artificial satellite to orbit the Earth had a mass of 83 6 kg and travelled at 7574 m s The radius of the earth is 6371...
- Q 2 An astronaut of mass 63 kg climbs a set of stairs with a total vertical rise of 3 4 m a What is the astronaut s gravitational potential energy...
- Q An artificial satellite circles the Earth in a circular orbit at a location where the acceleration due to gravity is 8 82 m s2 Determine the orbital period of the...
- Q 4 Now let s look at how everything you ve seen so far fits together to make the standard equation Using data for individual exoplanets you found a xwhere r...
- Q 6 The radius of the earth is R At what distance above the earth s surface will the acceleration of gravity be 4 9 m s2 A 0 41 R...
- Q 5 Satellite A has twice the mass of satellite B and moves at the same orbital distance from Earth as satellite B Compare the speeds of the two satellites A...
- Q Assuming a circular orbit what is the orbital velocity of Mars in kilometers per hour Express the answer in scientific notation and rounded to three significant figures V x 10...
- Q 1 07 What are the units for little g Ometers second OOO Newtons O Newtons kg Newton meters meters second 2
- Q A 54kg student travels to the moon You may enter answers in scientific notation as shown 1 23 x 105 1 23e5 What is her weight on earth N Fill...
- Q 6 28 If we are standing at the top of Everest what is true about us in relation to earth s gravitational field O We are experiencing the same acceleration...
- Q How many times has Uranus rotated on its axis in the last 56 Earth hours rotations
- Q Express the answer in scientific notation A particular star is 2 4 x 10 7 m away from Earth with a luminosity L of 1 8 1028 W Ignoring the...
- Q All changes saved 6 In the 1960s the Soviet Union launched a satellite into a nearly circular orbit around Earth One commentator expressed concern that such a satellite could drop...
- Q After calculating the Moon s acceleration one student makes the following claim I think the Moon s acceleration is so small because it is far away from the surface of...
- Q A rocket orbits a planet in a circular orbit at a constant speed as shown in the drawing Note these arrows 4 2 3 4 At the instant shown in...
- Q 7 What is the length of a simple pendulum oscillating on Earth with a period of 2 5 s
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