PHYSICS HIGH SCHOOL

What is 54 km = _____ cm
Im working on physical science and I need help ):

Answers

Answer 1
Answer: 1 km = 100,000 cm
54 km = 54 x 100,000 cm = 5,400,000 km
Answer 2
Answer: It is 5400000 cm long

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A projectile was launched horizontally with a velocity of 468 m/s, 1.86 m above the ground. Calculate how long it would take for the projectile to hit the ground, to the nearest tenth of a second. Record your answer in the boxes below. Be sure to use the correct place value.

Answers

Answer:

  0.6 seconds

Explanation:

The time to fall from height h is ...

  t = √(2h/g)

  t = √(2(1.86 m)/(9.8 m/s^2)) ≈ √0.3796 s ≈ 0.616 s

It would take about 0.6 seconds for the projectile to hit the ground.

Answer:

0.6seconds

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When the shadow of the moon appears on earths surface what is occuring?

Answers

The moon surface is visible to an observer on earth due to the gravitational force that attracts the moon to the earth. The more massive the body is, the more the smaller body is attracted to the larger body. We can only see the side of the moon due to the speed at which the moon rotates.

How would an electron shell model of an oxygen atom (O) appear after the atom has formed chemical bonds?

Answers

Since oxygen is found in group 6, it can be said that it will form 2 covalent bonds in order to complete its valency of 8 electrons. When it has formed chemical bonds, its electron shell model will show two atoms attached to oxygen, sharing 2 electrons. If oxygen bonds with only 1 atom (ex. CO), it will show 3 electrons being shared.

Answer:

A

Explanation:

I dont get why its c i dont under the graph for the vertical component in option c

Answers

The vertical component grows at an increasing rate because
gravity is ACCELERATING the object vertically.  So its speed
keeps growing.  Speed is the slope of the displacement graph.

Paula spots a glider located at an angle of elevation of 42 degrees. the distance between the glider and paula is 3280 feet. to the nearest foot, what is the height of the glider h from the ground?

Answers

This situation represents triangle with one angle of 90 degrees. That angle is directly below glider. That means that we can you basic trigonometry functions.

sin42 = h/3280

Now we express h.
h = 3280* sin42 
h = 2195 feet

The answer is 2195 feet.

distance = 3280 feet. This is the triangle's hypotenuse.

The distance from the ground is the opposite side as it is opposite the angle 42˚


Sin = Opposite/Hypotenuse

Sin(42) = Opposite/3280   Answer: 2195 feet

Cross multiply

Opposite = sin(42) x 3280

Opposite = 2194.7 feet

What happens when there is a change in pressure at any point in a fluid

Answers

A change in pressure applied to an enclosed fluid is transmitted undiminished to every point of the fluid and to the walls of the container. This is a statement of Pascal's Principle, which is the basis of the hydraulic jack you see lift cars at the garage.
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