2 years ago

A stone has a volume of 0.50 cm³ and a mass of

Physics

1 answer:

Dafna1 [17]2 years ago

8 0

Answer:

ρ = M / V = 2 g / .5 cm^3 = 4 g/cm^3

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Physical activity and exercise typically lead to

Dmitry [639]

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The answer is C (Higher energy levels)

Explanation:

Because it's C

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3 years ago

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The four wheels of a car are connected to the car's body by spring assemblies that let the wheels move up and down over bumps an

maksim [4K]

Answer:

The approximate spring constant is $k = 55533.33 \ N/m$

Explanation:

From the question we are told that

The mass of the person is $m = 68 \ kg$

The dip of the car is $x = 1.2 \ cm = 0.012 \ m$

Generally according to hooks law

$F = k * x$

here the force F is the weight of the person which is mathematically represented as

$F = m * g$

=> $m * g = k * x$

=> $k = \frac{m * g }{x }$

=> $k = \frac{68 * 9.8}{ 0.012}$

=> $k = 55533.33 \ N/m$

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3 years ago

Isabella drops a pen off her balcony by accident while celebrating the successful completion of a physics problem.

Studentka2010 [4]

Answer:

2 seconds

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v = at + v₀

19.62 m/s = (9.81 m/s²) t + 0 m/s

t = 2 s

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3 years ago

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A train of mass 5.6 × 10^5kg is at rest in a station.at time t=0s, a resultant force acts on the train and it starts to accelera

lana66690 [7]

Answer:

420000N

Explanation:

Given parameters:

Mass of the train = 5.6 x 10⁵kg

Acceleration = 0.75m/s²

Unknown:

Resultant force = ?

Solution:

According to newton's second law, force is the product of mass and acceleration;

Force = mass x acceleration

Resultant force that acts on the train is given below;

Force = 5.6 x 10⁵kg x 0.75m/s² = 420000N

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2 years ago

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Bas_tet [7]

It'd be an unbalanced force

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3 years ago