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inysia [295]
3 years ago
8

HELP!!!

Physics
2 answers:
nekit [7.7K]3 years ago
6 0
The answer is D. The Moon's gravitational pull
sergejj [24]3 years ago
3 0
D. The Moon's gravitational pull. This is because the moon's gravity pulls the water towards where it is in relation to earth causing high and low tides.
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A ball is accelerating down a hill. Which statement is true?
Andrew [12]

Answer:

The potential energy increases and the kinetic energy decreases

8 0
3 years ago
The potential energy of a watermelon is 15.0 J. The watermelon is 3.0 m high. What is the mass of the watermelon?
maks197457 [2]

Answer:

m = 0.51[kg]

Explanation:

Potential energy is defined as the product of mass by gravity by height.

E_{pot}=m*g*h

where:

Epot = potential energy = 15 [J]

m = mass [kg]

g = gravity acceleration = 9.8 [m/s²]

h = elevation = 3 [m]

Now replacing:

E_{pot}=m*g*h\\15=m*9.8*3\\m = 0.51[kg]

5 0
3 years ago
Which isotope is use to date ancient artifacts such as fossils?
meriva

the isotope they use is carbon-14


5 0
3 years ago
Use the drop-down menus to complete the statements magnetic field lines exit out of the north pole south pole magnetic field lin
MAXImum [283]

Answer:

1. North Pole

2. South Pole

3. A closed loop

Explanation:

4 0
3 years ago
Read 2 more answers
A 73-kg person in a moving car stops during a car collision in a distance of 0.80 m . The stopping force that the air bag exerts
fredd [130]

Answer:

 v₀ = 13.24 m / s

Explanation:

Let's use Newton's second law to find the average acceleration during the crash

       F = m a

.       a = F / m

       a = 8000/73

       a = 109.59 m / s²

Now we can use the kinematic equations to find the initial velocity, since when the velocity stops it is zero (v = 0)

       v² = v₀² - 2 a x

       v₀² = 2 a x

       v₀ = √  2 a x

       v₀ = √ (2 109.59 0.80)

       v₀ = 13.24 m / s

3 0
3 years ago
Read 2 more answers
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