Question
In: Physics
A circular rock 5 km in radius hits the earth head-on, at speed 36 km/s. The...
A circular rock 5 km in radius hits the earth head-on, at speed 36 km/s. The rock's density is 3 g/cm3. The earth's mass is 6*1024 kg. Treating the earth as initially stationary, calculate its final in speed due to the impact.
Because of the system's trouble with small numbers, calculate the speed in μm/s -- the distance unit is the micron or micrometer, 10-6 meter.
I am so confused on where to start, like is the rocks density m2 and earths mass m1? please help
Solutions
genius_generous answered 3 years agoRelated Solutions
5. Consider the earth to be a sphere of radius 6370 km. (a) Express the coordinates...
5. Consider the earth to be a sphere of radius 6370 km. (a)
Express the coordinates of Jacksonville and Los Angeles in
spherical coordinates if the z-axis points from the center of the
earth towards the north pole and the x-axis crosses the 0-deg
longitude. (b) Find the straight line distance between these two
cities and (c) the distance between the two cities along the
surface of the earth 'as the crow flies'.
A rocket, launched from the Earth, shuts off its engines when its speed is 4.90 km/s....
A rocket, launched from the Earth, shuts off its engines when
its speed is 4.90 km/s. It reaches a maximum altitude H of 2790 km
before it falls back to Earth. At what altitude l did the rocket's
engines shut off? The mass, radius, and escape speed of the Earth
are 5.972 x 1024 kg, 6.371 x 106 m, and 11.18 km/s respectively (4
points)
1) An Earth satellite is in a circular orbit at an altitude of 500 km. Explain why...
1) An
Earth satellite is in a circular orbit at an altitude of 500 km.
Explain why the work done by the gravitational force acting on the
satellite is zero. Using the work-energy theorem, what can you say
about the speed of the satellite?
A satellite in a circular orbit around the earth with a radius 1.011 times the mean...
A satellite in a circular orbit around the earth with a radius
1.011 times the mean radius of the earth is hit by an incoming
meteorite. A large fragment (m = 81.0 kg) is ejected in the
backwards direction so that it is stationary with respect to the
earth and falls directly to the ground. Its speed just before it
hits the ground is 361.0 m/s. Find the total work done by gravity
on the satellite fragment. RE 6.37·103 km;...
A satellite in a circular orbit around the earth with a radius 1.011 times the mean...
A satellite in a circular orbit around the earth with a radius
1.011 times the mean radius of the earth is hit by an incoming
meteorite. A large fragment (m = 75.0 kg) is ejected in the
backwards direction so that it is stationary with respect to the
earth and falls directly to the ground. Its speed just before it
hits the ground is 359.0 m/s.
Find the total work done by gravity on the satellite fragment.
RE 6.37
The radius of the Earth’s orbit around the sun (assumed to be circular) is 1.50∙108 km,...
The radius of the Earth’s orbit around the sun (assumed to be
circular) is 1.50∙108 km, and the Earth travels
around this obit in 365 days. The mass of the Earth is
5.98·1024 kg, and mass of the Sun is 1.99∙1030 kg.
(a) What is the magnitude of the orbital velocity of the
Earth, in m/s?
(b) What is the radial acceleration of the earth toward the
sun, in m/s2?
(c) What is the magnitude of centripetal force acting on...
A geostationary satellite is in a circular orbit around the Earth. What is the linear speed...
A geostationary satellite is in a circular orbit around the
Earth. What is the linear speed of the satellite?
An Earth satellite moves in a circular orbit 924 km above Earth's surface with a period...
An Earth satellite moves in a circular orbit 924 km above
Earth's surface with a period of 103.3 min. What are
(a) the speed and (b) the
magnitude of the centripetal acceleration of the satellite?
(a) What is the escape speed on a spherical asteroid whose radius is 550 km and...
(a) What is the escape speed on a spherical asteroid whose
radius is 550 km and whose gravitational acceleration at the
surface is 3.3m/s2
m/s
(b) How far from the surface will a particle go if it leaves the
asteroid's surface with a radial speed of 1000 m/s?
m
(c) With what speed will an object hit the asteroid if it is
dropped from 1000 km above the surface?
m/s
(a) What is the escape speed on a spherical asteroid whose radius is 376 km and...
(a) What is the escape speed on a spherical
asteroid whose radius is 376 km and whose gravitational
acceleration at the surface is 0.683 m/s2?
(b) How far from the surface will a particle go if
it leaves the asteroid's surface with a radial speed of 445 m/s?
(c) With what speed will an object hit the
asteroid if it is dropped from 592.7 km above the surface?
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