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erastovalidia [21]
3 years ago
13

Standing at the same location, which organism would have the GREATEST gravitational attraction to the earth?

Physics
2 answers:
Nastasia [14]3 years ago
7 0
To claculate the gravitational attraction between two bodies with mass 1(m1) and mass 2 (m2) you need to use the equation:

F= G ((m1*m2)/r^2)

Where;
G is the gravitational constant (6.67E-11 m^3 s-2 Kg-1) and
r is the distance between the two objects.


Anestetic [448]3 years ago
6 0

your pet elephant

why because elephant has more mass than any of your answer choice in your question even tho you didn't drop down any answer choice.

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What force is necessary to accelerate a 5.0 kg mass from rest to a final velocity of 10.0 m/s in 5.0 s?
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Answer:

10 N

Explanation:

F = ma = m(Δv/t) = 5.0(10.0 - 0)/5.0 = 10 N

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A monochromatic light beam with a quantum energy value of 3.0 ev is incident upon a photocell. the work function of the photocel
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All objects in the universe are attracted to each other by the force of. A. effort
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Which would take more force to stop in 10 seconds: an 8.0-kilogram ball rolling in a straight line at a speed of 0.2 m/s or a 4.
aliina [53]

You can do this two ways:

1).  Whatever kinetic energy the rolling ball has is the amount
of energy you have to absorb in order to stop it.

2).  Whatever momentum the rolling ball has is the amount of
momentum you have to provide in the other direction to cancel it.

Since you asked about force and time, we sense 'impulse' in the
air, and we know that impulse is exactly a change in momentum.
So let's use #2 and talk about momentum and impulse.

Impulse = (force) x (time)

Momentum of a moving object is  (mass) x (speed) .


-- Momentum of the first ball:  (8 kg) x (0.2 m/s) = 1.6 kg-m/s

Impulse required to stop it = 1.6 kg-m/s

         (force) x (10 sec) = 1.6

         Force required  =  1.6 / 10  =  0.16 Newton .


-- Momentum of the second ball:  (4 kg) x (1 m/s) = 4 kg-m/s

Impulse required to stop it =  4 kg-m/s

         (force) x (10 sec) = 4

         Force required  =  4 / 10  =  0.4 Newton .

You need more force o stop the second ball.  Although its mass
is only 1/2 the mass of the 8kg ball, it's moving 5 times as fast,
and has 2.5 times the momentum of the bigger ball. 
So you need 2.5 times as much impulse to stop it.
If you're going to push on each ball for the same length of time,
then you need to push 2.5 times as hard on the smaller ball in
order to stop it.

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