21st Century Astronomy
6th Edition
ISBN: 9780393428063
Author: Kay
Publisher: NORTON
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Chapter 4, Problem 5QP
To determine
The change in the weight of the person on Mars.
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Which of the following is a measurable effect of the tidal interactions between the Earth and the moon?
choose 1 of the following:
a.
The moon is constantly getting closer to the Earth, and will one day collide with our planet.
b.
The rotation rate of the Earth is gradually slowing down.
c.
The rotation rate of the moon is gradually speeding up.
d.
The moon pulls more strongly on the far side of the Earth than it does on the near side.
3. What is the gravitational field strength at the surface of Venus?
4. Calculate the escape velocity of the Jupiter
The rotation of the planets around the sun is governed by:
A. The gravitational field of the sun.
B. The gravity of the stars.
C. The heat energy of the sun.
D. The gravity of the other planets of the solar system.
Kelper's second law relates between them:
O A. The time period of rotation of the orbiting planet around the sun and the average distance of the planet to the
sun.
OB. The time period of rotation of the orbiting planet around the sun and the average distance of the planet to the
earth.
C. The time period of rotation of the orbiting planet around the sun and the average distance of the planet to the
moon.
OD. The time period of rotation of the orbiting planet around the earth and the average distance of the planet to
the sun.
Chapter 4 Solutions
21st Century Astronomy
Ch. 4.1 - Prob. 4.1ACYUCh. 4.1 - Prob. 4.1BCYUCh. 4.2 - Prob. 4.2CYUCh. 4.3 - Prob. 4.3CYUCh. 4.4 - Prob. 4.4CYUCh. 4 - Prob. 1QPCh. 4 - Prob. 2QPCh. 4 - Prob. 3QPCh. 4 - Prob. 4QPCh. 4 - Prob. 5QP
Ch. 4 - Prob. 6QPCh. 4 - Prob. 7QPCh. 4 - Prob. 8QPCh. 4 - Prob. 9QPCh. 4 - Prob. 10QPCh. 4 - Prob. 11QPCh. 4 - Prob. 12QPCh. 4 - Prob. 13QPCh. 4 - Prob. 14QPCh. 4 - Prob. 15QPCh. 4 - Prob. 16QPCh. 4 - Prob. 17QPCh. 4 - Prob. 18QPCh. 4 - Prob. 19QPCh. 4 - Prob. 20QPCh. 4 - Prob. 21QPCh. 4 - Prob. 22QPCh. 4 - Prob. 23QPCh. 4 - Prob. 24QPCh. 4 - Prob. 25QPCh. 4 - Prob. 26QPCh. 4 - Prob. 27QPCh. 4 - Prob. 28QPCh. 4 - Prob. 29QPCh. 4 - Prob. 30QPCh. 4 - Prob. 31QPCh. 4 - Prob. 32QPCh. 4 - Prob. 33QPCh. 4 - Prob. 34QPCh. 4 - Prob. 35QPCh. 4 - Prob. 36QPCh. 4 - Prob. 37QPCh. 4 - Prob. 38QPCh. 4 - Prob. 39QPCh. 4 - Prob. 40QPCh. 4 - Prob. 41QPCh. 4 - Prob. 42QPCh. 4 - Prob. 43QPCh. 4 - Prob. 44QPCh. 4 - Prob. 45QP
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- A synchronous satellite, which always remains above the same point on a planets equator, is put in orbit around Jupiter to study that planets famous red spot. Jupiter rotates once every 9.84 h. Use the data of Table 13.2 to find the altitude of the satellite above the surface of the planet.arrow_forward(a) One of the moons of Jupiter, named Io, has an orbital radius of 4.22 108 m and a period of 1.77 days. Assuming the orbit is circular, calculate the mass of Jupiter, (b) The largest moon of Jupiter, named Ganymede, has an orbital radius of 1.07 109 m and a period of 7.16 days. Calculate the mass of Jupiter from this data, (c) Are your results to parts (a) and (b) consistent? Explain.arrow_forwardAn object of mass m is located on the surface of a spherical planet of mass M and radius R. The escape speed from the planet does not depend on which of the following? (a) M (b) m (c) the density of the planet (d) R (e) the acceleration due to gravity on that planetarrow_forward
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- 27. Less force is required to launch a spaceship from the surface of the Moon than to launch an identical ship from the surface of Earth becauseA. the Moon has a smaller surface area than Earth.B. the mass of an object on Earth is greater than on the Moon.C. the gravitational field of the Moon is less than that of Earth.D. the atmosphere of the Moon is much thinner than that of Earth.arrow_forward3. What is the gravitational field strength at the surface of Venus?arrow_forwardJupiter has a mass approximately 300 times greater than Earth's and a radius about 11 times greater. How will the gravitational acceleration at the surface of Jupiter compare to that at the surface of the Earth? a. Greater b. Less c. About the same d. Not enough informationarrow_forward
- Why does the Moon have a greater influence on Earth's tides than the Sun does? A. because the Moon is closer to Earth than the Sun is B. because the Moon is more massive than the Sun C. because the Moon is less massive than the Sun D. because the Moon is farther away from Earth than the Sun isarrow_forwardThe magnitude of the gravitational field on the surface of a particular planet is 1/2g. The planet’s mass is double the mass of Earth. What is the planet’s radius in terms of the radius RE of Earth? A.2RE B.RE/2 C.4RE D.RE/4arrow_forwardQ1. A planet has two moons of equal mass. Moon 1 is in circular orbit of radius r. Moon 2 is in a circular orbit of radius 2r. What is the magnitude of the gravitational force exerted by the planet on Moon 2? a. Four times as large as that on Moon 1 b. Twice as large as that on Moon 1 c. Equal to that on Moon 1 d. Half as large as that on Moon 1 e. One fourth as large as that on Moon 1 Q2. Superman stands on a top of very tall mountain and throws a baseball horizontally with a speed such that the baseball goes into a circular orbit around the earth While the baseball is in the orbit, what is the magnitude of the acceleration of the ball? a. It depends on how fast the baseball is thrown b. It is zero because the ball does not fall to the ground c. It is slightly less than 9.80m/s^2 d. It is equal to 9.80m/s^2 Q3. A comet moves in an elliptical orbit around the sun. Which point in its orbit (perihelion or aphelion) represent the highest value of a. The speed of the comet b. The…arrow_forward
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