Imagine an asteroid starting to move toward the Earth from an infinitely far distance and from...
Imagine an asteroid starting to move toward the Earth from an infinitely far distance and from rest. The speed of the asteroid when it reaches to a distance ? from the center of the Earth is ?1. It will have a speed of ?2 after it travels more and reaches to a distance ?/2from the center of the Earth. What is the ratio of ?2 and ?1? Prove your answer.
Hint: Use work-kinetic energy theorem
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Imagine an asteroid starting to move toward the Earth from an
infinitely far distance and from...
1- A 300 ? mass is attached to a solid 40 ?? long string the other...
1- A 300 ? mass is attached to
a solid 40 ?? long string the other end of which is secured to the
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A projectile is shot directly away from Earth's surface. Neglect the rotation of the Earth. What multiple of Earth's radius RE gives the radial distance (from the Earth's center) the projectile reaches if (a) its initial speed is 0.437 of the escape speed from Earth and (b) its initial kinetic energy is 0.437 of the kinetic energy required to escape Earth? (Give your answers as unitless numbers.)
A. What is the potential a distance of 8.5 mm from a point charge of 7.6...
A. What is the potential a distance of 8.5 mm from a point
charge of 7.6 uC?
B. How much would would it take to move a second charge of 4.9
uC from infinity to that a point that distance from the first
charge? (this is the potential energy now stored in the system)
C. If you release the send charge, it will move away from the
first. How much kinetic energy will it have once it is infinitely
far...
A projectile is shot directly away from Earth's surface. Neglect the rotation of the Earth. What...
A projectile is shot directly away from Earth's surface. Neglect the rotation of the Earth. What multiple of Earth's radius RE gives the radial distance (from the Earth's center) the projectile reaches if a) its initial speed is 0.365 of the escape speed from Earth and b) its initial kinetic energy is 0.365 of the kinetic energy required to escape Earth? (Give your answers as unitless numbers.) c) What is the least initial mechanical energy required at launch if the...
A projectile is shot directly away from Earth's surface. Neglect the rotation of the Earth. What...
A projectile is shot directly away from Earth's surface. Neglect the rotation of the Earth. What multiple of Earth's radius RE gives the radial distance (from the Earth's center) the projectile reaches if (a) its initial speed is 0.662 of the escape speed from Earth and (b) its initial kinetic energy is 0.662 of the kinetic energy required to escape Earth? (Give your answers as unitless numbers.) (c) What is the least initial mechanical energy required at launch if the...
A large asteroid of mass 60900kg is at rest far away from any planets or stars....
A large asteroid of mass 60900kg is at rest far away from any planets or stars. a smaller asteroid of mass 8.0 x 10^2 kg, is in circular orbit about the first at a distance of 366 meters as a result of their mutual gravitational attraction. What is the speed of the second asteroid? Now suppose that the first and second asteroids carry charges of +2.68c and -2.68c. How fast would the second asteroid have to be moving in order...
please explain the answer 3) Imagine an infinitely long ramp. The ramp is at an incline...
please explain the answer
3) Imagine an infinitely long ramp. The ramp is at an incline 0relative to the hori- zontal. A ball is placed on the ramp (at rest) and allowed to roll down. After the ball travels a distance D along the ramp the ball encounters a smaller second ramp (this is like a ski jump). The second ramp makes and angle 02 relative to the incline. The second 3 ramp launches the ball (just like a ski...
3) Imagine an infinitely long ramp. The ramp is at an incline 01 relative to the...
3) Imagine an infinitely long ramp. The ramp is at an incline 01 relative to the hori- zontal. A ball is placed on the ramp (at rest) and allowed to roll down. After the ball travels a distance D along the ramp the ball encounters a smaller second ramp (this is like a ski jump). The second ramp makes and angle 02 relative to the incline. The second 3 ramp launches the ball (just like a ski jump). Derive an...
A large asteroid of mass 71700 kg71700 kg is at rest far away from any planets...
A large asteroid of mass 71700 kg71700 kg is at rest far away from any planets or stars. A much smaller asteroid, of mass 830 kg,830 kg, is in a circular orbit about the large asteroid at a distance of 256 m256 m as a result of their mutual gravitational attraction. What is the speed ?2v2 of the second asteroid? ?2 m/sm/s Now suppose that the first and second asteroids carry charges of +1.68 C+1.68 C and −1.68 C,−1.68 C,...
1- A 300 ? mass is attached to
a solid 40 ?? long string the other end of which is secured to the
ceiling. The mass is given an initial speed which makes it swing
around a circular path in the horizontal plane without changing its
speed and without changing its height. The object completes 2
revolutions in 2 seconds.
A) What is the magnitude of the angular velocity of this
circular motion? B) Find the tension in the string....
A. What is the potential a distance of 8.5 mm from a point
charge of 7.6 uC?
B. How much would would it take to move a second charge of 4.9
uC from infinity to that a point that distance from the first
charge? (this is the potential energy now stored in the system)
C. If you release the send charge, it will move away from the
first. How much kinetic energy will it have once it is infinitely
far...
please explain the answer
3) Imagine an infinitely long ramp. The ramp is at an incline 0relative to the hori- zontal. A ball is placed on the ramp (at rest) and allowed to roll down. After the ball travels a distance D along the ramp the ball encounters a smaller second ramp (this is like a ski jump). The second ramp makes and angle 02 relative to the incline. The second 3 ramp launches the ball (just like a ski...
3) Imagine an infinitely long ramp. The ramp is at an incline 01 relative to the hori- zontal. A ball is placed on the ramp (at rest) and allowed to roll down. After the ball travels a distance D along the ramp the ball encounters a smaller second ramp (this is like a ski jump). The second ramp makes and angle 02 relative to the incline. The second 3 ramp launches the ball (just like a ski jump). Derive an...
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