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ASHA 777 [7]
3 years ago
11

The Nile river excellent for. what

Physics
2 answers:
Ludmilka [50]3 years ago
8 0
Transporting goods and farming and the soil was very rich and good for crops
myrzilka [38]3 years ago
7 0
1.) Transportation og goods and people

2.) Farming because of the rich minerls in its rivers

3.) The fertile soil near the river which helpes grow flax, wheat and papyrus.
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What was a pattern in nature that contributed to an understanding of atoms?
devlian [24]

the fact that chemicals have different colors

7 0
2 years ago
A mass of 3 slugs (this is the English unit of mass, a pound is a force) is attached to a vertical spring with a spring constant
motikmotik

Answer:

equation of motion for the mass is x(t) = e^αt ( C1 cos √{α² - ω²} t + C2 sin  √{α² - ω²} t )

Explanation:

Given data

mass = 3 slugs = 3 * 32.14 = 96.52 lbs

constant k = 9 lbs/ft

Beta = 6lbs * s/ft

mass is pulled =  1 ft below

to find out

equation of motion for the mass

solution

we know that The mass is pulled 1 ft below so

we will apply here differential equation of free motion i.e

dx²/dt² + 2 α dx/dt + ω² x =0     ........................1

here 2 α  =  Beta / mass

so 2 α  = 6 / 96.52

α  = 0.031

α²  = 0.000961         ...............2

and

ω² = k/mass

ω² = 9 /96.52

ω² = 0.093     ..................3

we can say that from equation 2 and 3 that α² - ω²  = -0.092239

this is less than zero

so differential equation is

x(t) = e^αt ( C1 cos √{α² - ω²} t + C2 sin  √{α² - ω²} t )

equation of motion for the mass is x(t) = e^αt ( C1 cos √{α² - ω²} t + C2 sin  √{α² - ω²} t )

3 0
3 years ago
Why must humans limit their exposure to X-rays and gamma rays?
serious [3.7K]
The US and governmental protection agency sets limit your exposure to x-rays and gamma rays in part because they recognized that this form of releasing can cause cancer for more information on the classification system is used by these agencies seen on and probably human characters
4 0
3 years ago
Read 2 more answers
a 40 kg boy jumps off the side of the pool. when he hits the water, he is traveling 3 m/s. how much kinetic energy does he have
Vladimir79 [104]
3 m/s because when he hits the water he will be traveling at the same speed
4 0
4 years ago
A 58-kg boy swings a baseball bat, which causes a 0.140-kg baseball to move toward 3rd base with a velocity of 38.0 m/s.
Sophie [7]

Answer:
101 J
Explanation:
The kinetic energy of an object is given by

where
m is the mass of the object
v is its speed
For the baseball in this problem,
m = 0.140 kg
v = 38.0 m/s
Substituting into the equation, we find the kinetic energy of the ball:

4
answers left
3 0
3 years ago
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