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3 years ago

WILL GIVE BRAINLIEST!

1 answer:

8 0

stable equilibrium, if displaced from equilibrium, it experiences a net force or torque in a direction opposite to the direction of the displacement.

unstable equilibrium, if displaced it experiences a net force or torque in the same direction as the displacement from equilibrium. A system in unstable equilibrium accelerates away from its equilibrium position if displaced even slightly.

neutral equilibrium, is when an equilibrium is independent of displacements from its original position.

Have a good day, hope this helps

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How long it takes to reach maximum height in seconds

olganol [36]

The dotted path is the path of the ball. it reaches it's maximum height at the top where vertical, y-velocity = 0
The initial y-velocity = 19sin(70°)
initial y-velocity = 17.85 m/s

Use one of the kinematic equations with velocity and time. No displacement because we don't want to worry about figuring that out.

v = u - gt
0 = 17.85 - 9.8t
-17.85 = -9.8t
17.85/9.8 = t
1.82 sec = t

6 0

3 years ago

In preparation for building a space station, an astronaut removes a self-telescoping uniform rod from the cargo bay and releases

emmainna [20.7K]

To solve this problem it is necessary to apply the concepts related to the conservation of angular momentum. This can be expressed mathematically as a function of inertia and angular velocity, that is:

$L = I\omega$

Where,

I = Moment of Inertia

$\omega$ = Angular Velocity

For the given object the moment of inertia is equivalent to

$I = \frac{mr^2}{12}$

Considering that the moment of inertia varies according to distance, and that there are two of these without altering the mass we will finally have to

$L_i = L_f$

$I_i \omega_1 = I_f \omega_2$

$(\frac{mr_{initial}^2}{12})(\omega_1)=(\frac{mr_{final}^2}{12})(\omega_2)$

$(r_{initial}^2})(\omega_1)=(r_{final}^2)(\omega_2)$

Our values are given as,

$r_{initial} = 3m\\\omega_1 = 0.05rad/s \\r_{final}=1.5m$

Replacing we have,

$(3^2})(0.05)=(1.5^2)(\omega_2)$

$\omega_2 = 0.2rad/s$

Therefore the angular speed after the catch slips is 0.2rad/s

7 0

3 years ago

Does the sun being high in the sky have anything to do with the distance form earths ground

valentina_108 [34]

Answer:

Explanation:

the sun is from the big bang

3 0

3 years ago

Which of these properties of a star best determines its life cycle?

Rashid [163]

The initial mass of a star determines its evolution.

Smaller stars on the main sequence will swell to become giants. Larger stars on the main sequence will swell to become supergiants.

3 0

3 years ago

if a modern home is built too tightly, the air change rate per hour is reduced. Ventilation may be increased to safe levels by _

Galina-37 [17]

Answer:Mechanical ventilation system

Explanation:

Ventilation can be increased to safe levels by using mechanical ventilation system to bring in more fresh air.

There are many ways to provide ventilation for example

providing ventilation fans in kitchens and bathrooms to remove allergens,moisture.
A duct should be provided such that it provides fresh air to different rooms and provision should also be made to remove the poor air inside home.

8 0

3 years ago