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An occultation occurs when:
b. a planet passes between Earth and a star.
During an occultation, the planet's disk blocks the light from the star, resulting in a temporary reduction or complete disappearance of the star's brightness as observed from Earth. Therefore, the correct answer is b. a planet passes between Earth and a star.
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Oçcultations directly determine a planet's a. diameter. b. mass. c. density. d. orbital speed.
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The Great Red Spot on Jupiter is a. a surface feature. b. a storm that has been raging for more than 300 years. c. caused by the interaction between the magnetosphere and Io. d. about the size of North America.
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The different colors of clouds on Jupiter result from:b. composition.The composition of the clouds on Jupiter, primarily consisting of ammonia, ammonium hydrosulfide, and water vapor, contributes to their colors. These...
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Jupiter, Saturn, and Neptune radiate more energy into space than they receive from the Sun. What is the source of the additional energy?
The additional energy radiated by gas giant planets like Jupiter, Saturn, and Neptune, beyond what they receive from the Sun, primarily comes from their internal heat sources. These planets possess...
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Mars has a diameter that is approximately half that of Earth. If the interiors of these planets are heated by radioactive decays, how does the heating rate of the interior of Mars compare to that of Earth? a. The heating rate of Mars is 0.125 times that of Earth. b. The heating rate of Mars is 8 times that of Earth. c. The heating rate of Mars is 0.5 times that of Earth. d. The heating rate of Mars is 4 times that of Earth. e. The heating rates are about the same.
Heating Rate Comparison The heating rate of a planet's interior due to radioactive decay is proportional to its volume, which is determined by its radius cubed. Since Mars has a diameter...
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Assume that Earth and Mars are perfect spheres with radii of 6,371 km and 3,390 km, respectively. a. Calculate the surface area of Earth. b. Calculate the surface area of Mars. c. If 0.72 (72 percent) of Earth's surface is covered with water, compare the amount of Earth's land area to the total surface area of Mars.
a. Surface area of Earth: We'll use the formula $( A = 4 $pi r^2 $) where $( r = 6371 $) km: $[ A_{$text{Earth}} = 4 $times 3.14159 $times (6371)^2 $,...
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Compare the kinetic energy (=(1)/(2) m v^2) of a 1 -gram piece of ice (about half the mass of a dime) entering Earth's atmosphere at a speed of 50 km / s to that of a 2 -metric-ton SUV (mass =2 × 10^3kg speeding down the highway at 90 km / h.
Kinetic Energy Comparison Kinetic Energy of a 1-gram piece of ice: We'll use the formula for kinetic energy: \[ KE = \frac{1}{2} m v^2 \] Given that the mass of the ice (\( m...
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What is (a) the angular speed and (b) the linear speed of a point on Earth's surface at latitude 30^∘ N. Take the radius of the Earth to be 6309 km. (c) At what latitude would your linear speed be 10 m / s ?
To calculate the angular speed � ω and linear speed � v of a point on Earth's surface at latitude 3 0 ∘ 30 ∘ North, we can use the following formulas: (a) Angular speed...
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A neutron star of mass 2 × 10^30kg and radius 10 km rotates with a period of 0.02 seconds. What is its rotational kinetic energy?
Rotational Kinetic Energy of a Neutron Star To calculate the rotational kinetic energy \( K \) of the neutron star, we use the formula: \[ K = \frac{1}{2} I \omega^2 \] Where:...
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Earth's day has increased by 0.002 s in the last century. If this increase in Earth's period is constant, how long will it take for Earth to come to rest?
Earth's Period Increase Calculation To calculate how long it will take for Earth to come to rest if the increase in its period is constant, we need to first determine the...
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