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goblinko [34]
4 years ago
5

1. What are three properties of acids?​

Physics
1 answer:
yarga [219]4 years ago
5 0

1.conducts electricty 2.change blue litmus to red 3.have a sour taste

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Why does a bowling ball and a feather hit the ground at the same time when they are dropped in a vacuum?
AnnyKZ [126]

Answer:

See the explanation below.

Explanation:

This is because the vacuum chamber removes all the air contained and for this reason, there is no force that opposes the movement of the feather when falling. We must remember that the free fall equation of kinematics is not a function of the mass of an object.

v_{f} =v_{o} +g*t

where:

Vf = final velocity [m/s]

Vo = initial velocity [m/s]

g = gravity acceleration [m/s²]

t = time [s]

As we can see the mass of the object is not included in the equation.

8 0
3 years ago
How must of the roller coaster's kinetic and/or potential energy is in each of the points. For each point, pick one option. (Sor
labwork [276]

Answer

  1. Point A-
  2. Point B-
  3. Point C- 100 Potential, 0 Kinetic

3 0
4 years ago
What is the acceleration of a rock at the top of its trajectory when thrown straight upward. explain whether or not the answer i
zvonat [6]

The acceleration of the rock is the gravitational acceleration due to earth which is around 9.8 m/s^2. As the rock travels upwards it is working against the constant force of gravity and when it reaches the top it is the force of gravity that will cause a cause in the direction of the rocks velocity and cause it to accelerate towards earth. Using the equation a = F/m, the acceleration due to gravity exerts a force per unit mass on an object causing the object to accelerate, anything above earth surface will therefore have an external gravitational force action on it (in terms of projectile motion). So at the top of the rocks trajectory, the acceleration of the rock will be g (9.8) as a constant force is gravity is exerted on the rock throughout its path.

3 0
3 years ago
Read 2 more answers
1. How much power does a light bulb contain if it does 600J of work in 5 seconds?
dimaraw [331]

Answer:

120 watts

Explanation:

#1: 120 watts

#2: 667 watts

#3: 3 watts

#4: i forgot how to do this one

5 0
3 years ago
Problem 10.32
Mashcka [7]

Answer : \alpha = -240\ rad/s^{2} south

Explanation :

Given that,

Force = 200 N

Length = 2.00 m

Mass = 5.00 kg

We know that , the  formula of the angular acceleration

\alpha = \dfrac{\tau}{I}\ rad/s^{2}

We know the moment of inertia of rod

I = \dfrac{ML^{2}}{12}

Now, the torque is

\tau = F\times r

The angular acceleration

\alpha = \dfrac{F\times r\times12}{ML^{2}}

\alpha = \dfrac{((200\ N\times-1\ m) + (-200\ N)\times(1\ m))\times12}{5\ kg\times2\ m\times2\ m}

\alpha = \dfrac{-400Nm\times12}{5kg\times4m^{2}}

\alpha = -240\ rad/s^{2}  

Negative sign represent of south direction.    

Hence, this is the required solution.


7 0
4 years ago
Read 2 more answers
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