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zlopas [31]
3 years ago
7

As a projectile travels down its trajectory path, it covers _____.

Physics
1 answer:
trapecia [35]3 years ago
8 0

Answer:

it is C.

definitely C

Explanation:

if I am right.

plz help me out and give brainliest

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_________ is the point on which a lever resets
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Answer:

the answer is fulcrum because

Explanation:

lever is a simple machine consisting of a bar that rotates around a fixed point. The fixed point of a lever is called the fulcrum. Like other machines, a lever makes work easier by changing the force applied to the machine or the distance over which the force is applied

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2 years ago
Do 10 grams of oxygen atoms and 10 grams of iron atoms contain the same number of particles
Sergio [31]
I’m lost at this question, sorry but I would’ve help !
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4 years ago
KE=0.5.m.v2 or PE=m.g.h
LUCKY_DIMON [66]

Answer:

1. 37.8J

2. 18 Billion Joules, 18 Gigajoules

3. 9.81 Billion Joules, 9.81 Gigajoules

Explanation:

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KE=(1/2)mv^2 and PE=mgh, noting that g=9.81

7 0
3 years ago
Read 2 more answers
A ball is dropped from the top of a building that is known to be 400 feet high. The formula for finding the height of the ball a
Ira Lisetskai [31]

Answer:

3 seconds

Explanation:

Height of the building = 400 feet

Height of the ball from the ground is given by

h=400−16t²

This formula has been derived from

s=ut+\frac{1}{2}at^2

a = Acceleration due to gravity = 32 ft/s²

u = Initial velocity = 0

t = Time taken

Substituting all the values we get

s=0t+\frac{1}{2}32t^2\\\Rightarrow s=16t^2

This is the height of the ball from the top of the building

The height of the ball from the ground will be

h = 400-s

⇒h = 400−16t²

When h = 256 ft

256=400-16t^2\\\Rightarrow t=\sqrt{\frac{256-400}{-16}}\\\Rightarrow t=3\ s

Time taken by the ball to reach a height of 256 feet above the ground is 3 seconds

4 0
4 years ago
What is potential and kinetic energy
Galina-37 [17]
<h2><u>Explanation:</u></h2>

______________________________

<u />

<h3>Potential:</h3>
  • This refers to an object having energy running through it, but being stored. It hasn't quite been released yet.
  • Ex: <em>Someone waiting to dive into a pool, when a whistle blows.</em>
<h3 /><h3>Kinetic: </h3>
  • This refers to the energy going through an object but that energy is moving, it's been released.
  • Ex: <em>A boy pedaling his bike atop a hill. </em>

______________________________

3 0
3 years ago
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