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JulijaS [17]
3 years ago
8

"the student drops one cannonball, and exactly 1.0 s later drops the other cannonball from the same height. what is the time int

erval between the first cannonball striking the ground and the second cannonball striking the ground"
Physics
1 answer:
Elden [556K]3 years ago
6 0

Answer;

1 second

Explanation;

Two objects moving at the same speed will always stay the same distance apart. If two objects are moving at different speeds, the distance between them must change.

Therefore; if the distance will be the same and the speed is also the same then the time taken will be the same.

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In what state must matter exist for fusion reactions to take place
steposvetlana [31]

Answer:

Plasma

Explanation:

For a fusion reaction to take place, there must be conditions in which the particles have extreme thermal kinetic energies, in this way the collisions that cause the nuclear fusion are generated. Therefore, it is necessary to reach very high temperatures, in which the state of matter will necessarily be plasma.

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3 years ago
Which of the following is the greatest component of plasma?
Xelga [282]
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Plasma is also made up of 90% water 8%proteins and 2%hormones. Normally your blood should have 55% of it to be plasma unless your body is polycythemic or anemic.
6 0
3 years ago
Which 3 components must be used in order for a light bulb to light?
Furkat [3]

The three components used to a light bulb to light is wire, light bulb, and battery(power supply)

<u>Explanation:</u>

  • The  light bulb has the metal base that is connected to the end of an electrical circuit.
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  • As the current flows the filaments get heated and the bulb started to glow

8 0
3 years ago
Write an essay convincing a non-active person that swimming is beneficial. Create a swim test. Please dont take from other sourc
strojnjashka [21]

A nonactive person should go swimming because swimming is a great exercise and when you are swimming the bones are more oiled up and they are more lubed and moveable. There are so many benefits that swimming help, for example, swimming helps keep your heart rate up but takes some of the impact stress off your body, it builds endurance, muscle strength and cardiovascular  fitness, it helps you maintain a healthy weight, and healthy heart and lungs, it also helps tones muscles and builds strength, and lastly it provides an all-over body workout, as nearly all of your muscles are used during swimming. Swimming is a way to relax peacefully, alleviate stress, improving coordination balanced and posture, it improves flexibility. Before going to swim make sure you warm up and stretch your muscles and joints, have plenty of fluid on hand and drink regularly. Swimming has become one of the most popular sports in Australia and the nation is surrounded by water and swimming which is one of the huge passions that people have created. Its one way to have fun, keep fit, stay healthy and make friends. Swimming is also a healthy activity that you can continue for a lifetime and it has a low-impact that had many physical and mental health benefits. Swimming has helped a lot of special need kids, it's also an exercise that doctors recommend a lot to all their patients if they got an injury or when they have to do some kind of special exercise


Swim Test:


1. Jump into the pool, submerge fully, return to the surface and immediately begin swimming without pushing off the wall.

2. Swim in a horizontal position on top of the water using a forward crawl or breaststroke. The swimmer's arms must achieve full extension on every stroke, and he or she must maintain one or both of the strokes for the full 25-yard swim. Pausing is only allowed when the swimmer is rotating or turning to breathe.

3. Exit the pool without assistance using either the wall or pool ladder.

4. do 4 laps in 3 minutes

3 0
3 years ago
if you have a block of steel with a density of 7.8g/cm3 and a block of gold with a density of 19.3g/cm3 each with the same volum
natita [175]
Gold because 19.3 is greater than 7.8
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