True
False

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Answer:

An object experiencing constant acceleration would generate a straight line with a positive slope on a velocity-time graph.

Answer:

A vector quantity is a quantity that has both magnitude and direction.

Explanation:

Answer:

equal to 1 i think

Explanation:

The easiest way to calculate the density of dry air is by applying the ideal gas law. The ideal gas law expresses density as a function of temperature and pressure. Also, just like all gas laws, it is an estimate.

Answer:

90.71

Explanation: Just multiply  V/D=Mass

Answer:

6kg m/s--------------------------

Step #1: Learn what "displacement" means.

Step #2: Learn what "velocity" means.

Answer:

50m/s

Explanation:

500/10 to find the velocity always divide

the distance bt the time

Answer:

The answer is two meter per second square

When the forces on the object are unbalanced, the object will move in the direction of the greater force.

Newton's first law of motion states that an object at rest or uniform motion in a straight line will continue in that path unless acted upon by an external force and the object will tend to move in the direction of the applied force.

Newton's second law of motion states that the force applied to a body is directly proportional to the acceleration of the body.

F = ma

If the net force acting on a body is greater than zero, the body will tend to move in the direction of the greater force.

Thus, when the forces on the object are unbalanced, the object will move in the direction of the greater force.

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Huh??

Have a blessed day <333

Answer:

With Full Honesty I'm Not Sure Who Does, And It Also May Be Hard To Find Someone Who Does, Thanks For Reading This Is Also Have Some More Information Down Below. Thank You!

And I'm Taking It, Your A Single Male So, Lets Get Into The Point

Explanation:

Oh And BTW Brainly Isn't A Good Place To Look For People Who Are Interested In You, And That's Also A Good Explanation Because They Don't Even Know You, If Your Interested In Well Dating Someone Be Upfront And In-Person With Them, Just Look On Dating Appz And/or More Different Sites. IT'S REALLY SIMPLE!   (～￣▽￣)～

Explanation:

You walk 53m to the north, then you turn 60° to your right and walk another 45m. Determine the direction of your displacement vector. Express your answer as an angle relative to east.

Answer:

In June 1783, Lavoisier reacted oxygen with inflammable air, obtaining "water in a very pure state." He correctly concluded that water was not an element.

Explanation:

As the fire left behind ashes of a substance it indicated that it is not an element as element cannot be decomposed in to simpler substances.

It is defined as a substance which cannot be broken down further into any other substance. Each element is made up of its own type of atom. Due to this reason all elements are different from one another.

Elements can be classified as metals and non-metals. Metals are shiny and conduct electricity and are all solids at room temperature except mercury. Non-metals do not conduct electricity and are mostly gases at room temperature except carbon and sulfur.

The number of protons in the nucleus is the defining property of an element and is related to the atomic number.All atoms with same atomic number are atoms of same element.

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We have that with v_1 =v this goes to show that  the velocity of the bigger block after the collision takes place is v

From the question we are told

Suppose the blocks collide elastically. picking the positive direction to the right, what is the velocity of the bigger block after the collision takes place?

Generally the equation for Momentum   is mathematically given as

P=mv

Therefore

[tex]m_1v_2=m_2v_2[/tex]

Hence

[tex]v_1=\frac{m_2v_2}{m_1}[/tex]

Therefore

[tex]v_1=\frac{mv_2}{2m}\\\\v_1=\frac{v_2}{2}[/tex]

Hence

[tex]2v+v=v_1+v_2\\\\v_1=v[/tex]

Now

with v_1 =v this goes to show that  the velocity of the bigger block after the collision takes place is v

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Answer:

Explanation:

The momentum of an object can be found by using the formula

momentum = mass × velocity

From the question

mass = 2 kg

velocity/speed = 3 m/s

We have

momentum = 2 × 3 = 6

We have the final answer as

Hope this helps you

Answer:

(Question) Which of these quantities is a vector?

(Answer) momentum

(Question) What is the representation of the momentum vector?

(Answer) an arrow

(Question) What is the formula for the momentum p?

(Answer) p=m⋅v

(Question) What happens to the total momentum in a system of two interacting objects when a net force is exerted upon the system?

(Answer) The total momentum is conserved.

(Question) What is the magnitude momentum of a 2 kg body that moves with a speed of 3 m/s?

(Answer) 6.0

Explanation:

just finished the quick check UwU

Answer:

Mass of the object or earth

The kinematic relations allow finding the results for the different questions are:

     1.  The acceleraations is a = 375 m/s²

     2. The time is t = 62.5 s

     3. The velocity at the ground is  v = -14.7 m / s

     4.  The time to the bottoncliff is    1.7 s

     5.  The height isy₀ = 122.5 m

     6.

         A) The velocity is v = 25.2 m / s

         B)  The height  for t=1 s is  y = 18.1 m

     7.

         A)  Time in the air is t = 2 s

         B)  The final veloicty is   v = - 19.6 m / s

Kinematics analyzes the movement of bodies, finding relationships between the position, velocity and acceleration of bodies.

Let's look for the answers to a series of questions:

1. They indicate the initial and final velocities of the body and the time to reach it is 20 s, ask how much the acceleration is worth

Let's use the relationship

             v = v₀ + a t

             a = [tex]\frac{v-v_o}{t}[/tex]

             a = [tex]\frac{17500-10000}{20}[/tex]

             a = 375 m/s²

2. What is the time it takes to travel a distance of 125 m with an acceleration of 4 m / s²

             x = v₀ t + ½ a t²

As it leaves the direction its initial velocity is zero

             x = ½ to t²

             t = [tex]\sqrt{\frac{2x}{a} }[/tex]

             t = [tex]\sqrt{\frac{2 \ 125}{4} }[/tex]

             t = 62.5 s

3. A pencil falls from a height and reaches the floor in a time of 1.5 s what is the speed when reaching the floor

            v = v₀ - g t

As it is released its initial velocity is zero

            v = -g t

            v = - 9.8 1.5

            v = -14.7 m / s

The negative sign indicates that the velocity is directed downwards.

4. From the edge of a cliff 40 m high, an apple is thrown downward with an initial velocity of 15 m / s. How long does it take to get to the bottom?

             y = y₀ + v₀ t - ½ g t²

In this case the initial velocity is negative because it is directed downwards and when it reaches the floor its height is zero, let us substitute

Suppose the acceleration is g = 10 m / s²

             0 = 40 - 15 t - ½ 10 t²

             0 = 40 - 15 t - 5 t²

let's solve the quadratic equation

             t² + 3 t - 8 = 0

             t = -3 + Ts 9 + 4 8/2

            t = -3 + 6. 4/2

             t₁ = - 4.9 s

            t₂ = 1.7 s

The time must be a positive quantity, so the correct answer is 1.7 s

5. A stone is dropped from the ceiling and it takes a time 5 s to reach the floor, which is the height of the ceiling

           y = y₀ +v₀ t - ½ g t²

as it is released from the ceiling its initial velocity is zero and the height upon reaching the floor is zero

          0 = y₀ + 0 - ½ g t²

          y₀ = ½ g t²

          y₀ = ½ 9.8 5²

          y₀ = 122.5 m

6. A man at a height of 30 m throws a ball downward at 7 m / s

    A) The speed when reaching the ground

    B) The height of the ball when a time of 1 s has fallen.

  A) Let's use the kinematics relation

              v² = v₀² - 2 g (y -y₀)

              v = 7² - 2 9.8 (0 -30)

              v = 25.2 m / s

 B)   y = y₀ + v₀ t - ½ g t²

        y = 30  7 1 - ½ 9.8 1²

        y = 18.1 m

7.  A watermelon is dropped from rest from the top of a 20m cliff.  

 A) time in the air

 B) ground speed

  A) Let's use the relation

       y = y₀ + v₀ t - ½ g t²

It is released its initial velocity is zero and when it reaches the ground its height is zero (y = 0)

       0 = y₀ + 0 - ½ g t²

       t = [tex]\sqrt{\frac{2y_o}{g} }[/tex]

       t = [tex]\sqrt{\frac{2 \ 20}{9.8} }[/tex]

       t = 2 s

B) the speed when reaching the ground

       v = v₀ - g t

       v = 0 - 9.8 2

       v = - 19.6 m / s

The negative sign indicates that the speed is down

In conclusion using the kinematic relations we can find the results for the different questions are:

   1.  The acceleraations is a = 375 m/s²

   2. The time is t = 62.5 s

   3. The velocity at the ground is  v = -14.7 m / s

   4.  The time to the bottoncliff is    1.7 s

   5.  The height isy₀ = 122.5 m

   6.

      A) The velocity is v = 25.2 m / s

      B)  The height  for t=1 s is  y = 18.1 m

  7)

      A)  Time in the air is t = 2 s

      B)  Te final veloicty is   v = - 19.6 m / s

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Yes. Walking the hills in her neighborhood is a wonderful place to start.

D.  She can slowly improve her capacity and move to aerobic exercise later.

Yes, she can slowly improve her capacity and move to aerobic exercise later. The correct option is (D).

Even if it isn't initially aerobic, starting with walking is a wonderful place to start, especially if Bettina isn't used to exercising frequently. Walking is a low-impact activity that is simple to fit into daily life and can be used as a gentle introduction to developing a habit of physical activity.

Even while walking isn't typically thought of as an aerobic workout, it nevertheless has several health advantages, including enhancing cardiovascular health, boosting energy, lowering stress, and aiding in weight management. Bettina can eventually increase the length and intensity of her walks to make them aerobic as she steadily increases her endurance and fitness level through walking.

Hence, the correct option is (D). Yes, she can slowly improve her capacity and move to aerobic exercise later.

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Answer:

Speed

Explanation:

There is no other information that involves or asks about the velocity or acceleration. Since that rules out two you will be left with one only option.

C.protons

Explanation:

sana makatulong :>

Answer:

22.9km

Explanation:

If the mountain is 1.00 km higher in elevation than your position and the angle measured from your position to the top of a mountain is 2.50∘.then you would have been 22.9 km far away from the mountain

A right-angled triangle's side ratios are the easiest way to express a function of an arc or angle, such as the sine, cosine, tangent, cotangent, secant, or cosecant. These functions are known as trigonometric functions.

As given in the problem you measure the angle from your position to the top of a mountain to be 2.50∘. If the mountain is 1.00 km higher in elevation than your position,

By using the tangent trigonometric function for the right triangle

tanθ = height /distance

tan 2.5° = 1000 m /distance

distance =1000 m /tan 2.5°

              =22903 m

              =22.9 km

Thus, the mountain is 22.9 km far away from your position

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Answer:

Es una constante porque sigue funcionando y debido a la gravedad, tú tendrías que ser tú quien la detenga si está bajando en lugar de hacia arriba.

Explanation:

How much negative charge has been removed from a positively charged electroscope if it has a charge of 7.5x10-11C?

If C is Coulombs then, −1 C is equivalent to the charge of approximately 6.242×10^18 electrons.

You already gave the answer: -7.5x10–11C

It is like asking: What colour is my white horse?

Now if you want to know how many electrons have been removed, then multiplying the number of electrons in a coulomb by the coulombs you have, you get 4.6815 x 10^8 electrons. Which is almost the same answer as before.

3.7 x 10^8 electrons are removed from a positively charged electroscope.

The magnitude of charge carried by one electron is 1.602 x 10^-19 C

From the question, we can see that the net charge on the electroscope is 6 x 10^-11 C

Given that;

6 x 10^-11 = 1.602 x 10^-19 n

Where n is the number of electrons removed from a positively charged electroscope

Therefore;

n = 6 x 10^-11/ 1.602 x 10^-19

n = 3.7 x 10^8 electrons

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Explanation:

mass

4

4

4

4

mass

mass

mass

4

4

4

4

4

Answer:

Be sure to unplug the power source of all electrical equipment before working on it. Always pull from the plug, not the cord. Always wear proper non conductive clothing – insulated gloves, non conductive protective apparel and shoes with insulated soles. Avoid loose clothing or ties.

Answer:

From spectral lines astronomers can determine not only the element, but the temperature and density of that element in the star.

Answer:

The answer would be the chemicals in the atmosphere of the star.

A materiel that allows electricity to flow easily is called an conductor

Answer:

A. 0.67 m/s² forward

Explanation:

F applied = 250 N

Fsin30 = 250/2 = 125N

F friction= 95 N

Fnet = F app - F fri

= 125-95

= 30 N ( forward)

Fnet = m a

30 = 45 a

a= 30/45

=2/3

= 0.67 m/s² (forward)

Answer:

the answer would be 2.23

Explanation:

that is also a rounded up decimal! to find your answer, divide the mass (13.8) by the density (6.2) to find your volume :)