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matrenka [14]
3 years ago
11

As the car is pushing the box (and both are slowing down), which of the following are correct

Physics
1 answer:
myrzilka [38]3 years ago
5 0

Answer:

bhbhhgyhghhhhhhk

nhbb

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Suppose our experimenter repeats his experiment on a planet more massive than Earth, where the acceleration due to gravity is g
tekilochka [14]

Answer: a) It will take more time to return to the point from which it was released

Explanation: To determine how long it takes for the ball to return to the point of release and considering it is a free fall system, we can use the given formula:

d=v_{0}.t + \frac{1}{2} .a.t^{2}, where:

d is the distance the ball go through;

v₀ is the initial velocity, which is this case is 0 because he releases the ball;

a is acceleration due to gravity;

t is the time necessary for the fall;

Suppose <em>h</em> is the height from where the ball was dropped.

On Earth:

h=0.t + \frac{1}{2}.10.t^{2}

h = 5t²

t_{T} = \sqrt{\frac{h}{5} }

On the other planet:

h =  0.t + \frac{1}{2}.30.t^{2}

h = 15.t²

t_{P} = \sqrt{\frac{h}{15} }

Comparing the 2 planets:

\frac{t_{T} }{t_{P} } = \frac{\sqrt{\frac{h}{5} } }\sqrt{{\frac{h}{15} } }

\frac{t_{T} }{t_{P} } = \sqrt{3}  or t_{T} = \sqrt{3}.t_{P}

Comparing the two planets, on the massive planet, it will take more time to fall the height than on Earth. In consequence, it will take more time to return to the initial point, when it was released.

5 0
3 years ago
How are velocity and acceleration related
VashaNatasha [74]

Answer:

Acceleration is the rate of change of velocity.  If an object is changing its velocity, its speed, or changing its direction, then it is said to be accelerating.

Explanation:

when you change directions or speed up you are accelerating (or decelerating)  and when you change directions or speed its called velocity.

8 0
2 years ago
Mechanics: design a decision tree to determine if an object is experiencing an unbalanced force, and using newton's laws of moti
masya89 [10]

Answer:

The decision designer is a step-wise process

Explanation:

A typical decision tree will be like this:

Are there any forces?

YES - then calculate the resultant forces              NO - Then no calculations are needed

IF YES - Are the forces balanced?                         NO - Then no calculations

IF YES - Then calculations can be done.

Resolve the forces to find the resultant of the forces in the question.

3 0
4 years ago
A steel wire of diameter 1 mm can support a tension of 0.24 kn. suppose you need a cable made of these wires to support a tensio
forsale [732]
Assuming the same deformation and elastic modulus, we can use the relationship:
(P/D)1 = (P/D)2
Where P is the load, Dis the diameter of the wire, 1 is the first wire, and 2 is the second wire. Using the given values and solving for the diameter of the second wire:
D = (24 / 0.24) (1)
D = 100 mm
4 0
3 years ago
Aluminum allows for the flow of electrons, while glass does not. Would an aluminum wire surrounded by glass be an effective desi
pantera1 [17]

answer

no

Explanation:

I do not think that I would because even though its a conductor in the insulator I think it would insulate it before it will work (not sure if that makes sense)

3 0
2 years ago
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