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schepotkina [342]
3 years ago
9

Drag the words in the left-hand column to the appropriate blanks in the right-hand column. Reset Help Newton's first law of moti

on the orbit of each planet about the Sun is an ellipse with the Sun at one focus. Newton's second law of for any force, there is an equal and opposite reaction force. motion Newton's third law of motion a planet moves faster in the part of its orbit nearer the Sun and slower when farther from the Sun, sweeping out equal areas in equal times. Kepler's first law of planetary motion force = mass x acceleration Kepler's second law of planetary motion more distant planets orbit the Sun at slower average speeds, obeying the precise Kepler's third law of mathematical relationship p2 a3 planetary motion an object moves at constant velocity if there is no net force acting upon it
Physics
1 answer:
Tom [10]3 years ago
7 0

Explanation:

In this case, we need to write correct statement about the topics :

1. Kepler's first law of planetary motion = the orbit of each planet about the Sun is an ellipse with the Sun at one focus.

2. Newton's third law of motion = for any force, there is an equal and opposite reaction force.

3. Kepler's second law of planetary motion = a planet moves faster in the part of its orbit nearer the Sun and slower when farther from the Sun, sweeping out equal areas in equal times.

4. Newton's second law of motion = force = mass x acceleration

5. Kepler's third law = more distant planets orbit the Sun at slower average speeds obeying the mathematical relation, p^2=a^3

6. Newton's second law of motion = an object moves at constant velocity if there is no net force acting upon it

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DedPeter [7]

Answer:

Alloy, metallic substance composed of two or more elements, as either a compound or a solution. The components of alloys are ordinarily themselves metals, though carbon, a nonmetal, is an essential constituent of steel.

Explanation:

Alloys are usually produced by melting the mixture of ingredients. The value of alloys was discovered in very ancient times; brass (copper and zinc) and bronze (copper and tin) were especially important. Today, the most important are the alloy steels, broadly defined as steels containing significant amounts of elements other than iron and carbon. The principal alloying elements for steel are chromium, nickel, manganese, molybdenum, silicon, tungsten, vanadium, and boron have a wide range of special properties, such as hardness, toughness, corrosion resistance, magnetizability, and ductility. Nonferrous alloys, mainly copper–nickel, bronze, and aluminum alloys, are much used in coinage. The distinction between an alloying metal and an impurity is sometimes subtle; in aluminum, for example, silicon may be considered an impurity or a valuable component, depending on the application, because silicon adds strength though it reduces corrosion resistance.

8 0
3 years ago
a hunter 412.5m from a cliff moves a distance x towards the cliff and fires a gun. he hears the echo from the cliff after 2.2sec
Inessa [10]

Answer: 49.5 m

Explanation:

The speed of sound s is given by a relation between the distance d and the time t:

s=\frac{d}{t} (1)

Where:

s=330 m/s is the speed of sound in air (taking into account this value may vary according to the medium the sound wave travels)

d=412.5 m-x since we are told th hunter was initially 412.5 meters from the cliff and then moves a distance x towards the cliff

t=\frac{2.2 s}{2}=1.1 s Since the time given as data (2.2 s) is the time it takes to the sound wave to travel from the hunter's gun and then go back to the position where the hunter is after being reflected by the cliff

Having this information clarified, let's isolate d and then find x:

d=st (2)

412.5 m-x=(330 m/s)(1.1 s) (3)

Finding x:

x=49.5 m This is the distance at which the hunter is from the cliff.

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