Calculate the volume of this regular solid,
What is the volume of the sphere? Round your answer
to the nearest tenth.
cm
8 cm

Answer:

242.27929622673 meters

Answer:

u=20m/sec

v=0

a=5m/sec^2

v^2=u^2-2as[ here acceleration is negative]

0=400-2x5xs

-400= -10s

s= 40 metre.

The bus stop is 40 m away from the point at which it starts to slow down at -5 m/s².

The third equation of motion is -

v² - u² = 2aS

Given is a bus moving at a speed of 20 m/s. It begins to slow at a constant rate of 5 m/s² in order to stop at a bus stop.

We can write -

[u] = 20 m/s

[a] = - 5 m/s²

[v] = 0 m/s

Using the third equation of motion -

v² - u² = 2aS

- (20)² = 2 x - 5 x S

- 400 = - 10 S

S = 400/10

S = 40 m

Therefore, the bus stop is 40 m away from the point at which it starts to slow down at -5 m/s²

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Answer:

C6H6

Explanation:

I just took the test.

The only compound in the given options that is not soluble in water at normal condition is benzene (C₆H₆).

The material used in the wall-filling cannot be acidic or acidic salts. Acids and acidic salts have the tendency to dissolve in water.

An acid salt is a type of salt that can produce an acidic solution when it dissolves in water or other solvents.

In given compounds we can eliminate the possible acids and acid salts or water soluble compounds.

Thus, the only compound in the given options that is not soluble in water at normal condition is benzene (C₆H₆).

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Answer:

bowling ball

Explanation:

A bowling ball has more mass than the others, thus having more inertia.

Answer:

The benefits are the place you live in will have more oppurtunities for new jobs as well as growth in residential areas.

Explanation:

Answer:

B : The particles of matter are in constant motion

Explanation:

Answer:

When we analyze the sentence we see that this is a hypotype with the growth of plants must behave and it has a prediction included.

Therefore the correct answer is a

Explanation:

In this exercise you are asked to identify the given sentence with a specific part of the scientific method.

Among the parts of the method we have.

* Independent variable . The controlled variable in research

*Dependent variable. The magnitude measured in the experiment

* Control variable. The magnitude that is not controlled

*Experiment. It is the design of the procedure to evaluate the hypothesis

* Hypothesis. It is the assumption with which scientific work begins

* Prediction. It is a consequence of work if the mortgage is correct.

When we analyze the sentence we see that this is a hypotype with the growth of plants must behave and it has a prediction included.

Therefore the correct answer is a

Answer:false

Explanation:

The activity D. Improving their design to make it easier to recycle them when they are best described as an engineering endeavor related to cell phone batteries.

An engineering endeavor related to the generation of a product can be defined as any type of solution in order to enhance a particular feature of a given product, thereby increasing its utility in order to maximize the process that leads to its use by the clients of such product and or service in the market.

Endeavor engineering generally is based on the combination between extensive discovery and product development in order to solve a particular issue related to the product.

Therefore, with this data, we can see that an engineering endeavor related to the generation of a product is aimed at enhancing a particular feature of such a product.

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Answer: No,

explanation: When the object is neither speeding up or slowing down, we can say that its speed is constant.

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Answer:

a = 0.161 [tex]$m/s^2$[/tex]

Explanation:

Given :

[tex]$ d_{total}[/tex] = 10 km = 10000 m

[tex]$t_{total} $[/tex] = 27 min 43.6 s

        = 1663.6 s

[tex]$d_1$[/tex] = 7.85 km = 7850 m

[tex]$t_1$[/tex] = 25 min = 1500 s

[tex]$t_2$[/tex] = 60 s

Now the initial speed for the distance of 7.85 km is

[tex]$ v_1 = \frac{d_1}{t_1} = \frac{7850}{1500}$[/tex]  = 5.23 m/s

The velocity after 60 s after the distance of 7.85 kn is

[tex]$v_2 = v_1 + at_2$[/tex]

    = 5.23 + a(60)

The distance traveled for 60 s after the distance of 7.85 km is

[tex]$d_2 = v_1t_2+\frac{1}{2}at_2^2$[/tex]

[tex]$d_2 = (5.23)(60)+\frac{1}{2}a(60)^2$[/tex]

    = 313.8 + a(1800)

The time taken for the last journey where the speed is again uniform is

[tex]$t_3 = t_{total}-t_1-t_2 $[/tex]

   = 1663.6 - 1500 - 60

   = 103.6 s

Therefore, the distance traveled for the time [tex]$t_3$[/tex] is

[tex]$ d_3 = v_2 t_3$[/tex]

    = (5.23+60a)(103.6)

    = 541.8 + 6216 a

The total distance traveled,

[tex]$ d_{total}= d_1 + d_2 + d_3$[/tex]

Now substituting the values in the above equation for the acceleration a is

10000 = 7850 + (313.6 + 1800a) + (541.8 + 6216a)

10000 = 8706.5 + 8016a

1294.4 = 8016a

a = 0.161 [tex]$m/s^2$[/tex]

Answer:

the same magnitude but the opposite direction

Explanation:

Newton's third law of motion states that there is always an equal and opposite reaction to every action. This means that the amount of force exerted upon an object is equal to the amount of force the object exerts but in an opposite direction.

This is the case in this scenario where a student sits at rest in a chair. The student is supplying the action force being exerted on the chair. According to the third law of Newton, the chair will exert the same size of force back in the student but in an opposite direction.

Hence, the force the chair exerts on the students compare with that of the student in the sense that they are the same magnitude (size) but the opposite directions.

Answer:

8.89 m/s² west

Explanation:

Assume east is +x.  Given:

v₀ = 120 m/s

v = 0 m/s

t = 13.5 s

Find: a

v = at + v₀

0 m/s = a (13.5 s) + 120 m/s

a = -8.89 m/s²

a = 8.89 m/s² west

Answer:

1 m/s.

Explanation:

Given that,

Mass of a cue stick, m₁ = 0.5 kg

Mass of a ball, m₂ = 0.2 kg

The cue stick hits a ball with a velocity of 2.5 m/s

We need to find the velocity of the ball after it is hit. Tn this problem, the momentum of the system remains conserved. So,

m₁v₁ = m₂v₂

⇒ [tex]v_1=\dfrac{m_2v_2}{m_1}\\\\v_1=\dfrac{0.2\times 2.5}{0.5}\\\\v_1=1\ m/s[/tex]

So, the velocity of the ball after it is hit is 1 m/s.

Answer:

The moment of impact quick check (connexus academy)

Explanation:

Q.Which mathematical representation correctly identifies impulse?

A.impulse=force×time

Q.In a closed system, a ball with a mass of 3 kg and a momentum of 24 kg·m/s collides into a ball with a mass of 1 kg that is originally at rest. Which statement describes the momentum of the balls and the total momentum?

A.The momentum of each ball changes, and the total momentum stays the same.

Q.In a closed system, three objects have the following momentums: 110 kg⋅m/s, −65 kg⋅m/s, and −100 kg⋅m/s. The objects collide and move together. What is the total momentum after the collision?

A.−55 kg⋅m/s

Q.In a closed system, an object with a mass of 1.5 kg collides with a second object. The two objects then move together at a velocity of 50 m/s. The total momentum of the system is 250 kg⋅m/s. What is the mass of the second object?

A.3.5 kg

Q.A cue stick has a mass of 0.5 kg. The cue stick hits a ball with a mass of 0.2 kg at a velocity of 2.5 m/s. What is the velocity of the ball after it is hit?

A.6.3 m/s

Answer:

1.

Explanation:gamma rays are the most powerful in the electromagnetic spectrum and they are a result of a radioactive atom.they aren't made of matter but just energy as a wave.

Answer:

a) 1.75 m

b) 5 L

c) 5.5 g

d) 3.5 L

Explanation:

a) cm -> m

1 m = 100 cm, so,

1 cm = 1/100 m

175 cm = 175/100 m

175 cm = 1.75 m

b) mL -> L

1 L = 1000 mL, so

1 mL = 1/1000 L

5000 mL = 5000/1000 L

5000 mL = 5 L

c) kg -> g

1 g = 1/1000 kg, so

1 kg = 1000 g

0.0055 kg = 0.0055 * 1000 g

0.0055 kg = 5.5 g

d) cm³ -> L

1 L = 1000 cm³, so

1 cm³ = 1/1000 L

3500 cm³ = 3500/1000 L

3500 cm³ = 3.5 L

therefore, we can conclude that 175 cm is 1.75 m, 5000 mL is 5 L, 0.0055 kg is 5.5g and 3500 cm³ is 3.5 L

Answer:

Explanation:

Answer:

a) 1.75 m

b) 5 L

c) 5.5 g

d) 3.5 L

Explanation:

a) cm -> m

1 m = 100 cm, so,

1 cm = 1/100 m

175 cm = 175/100 m

175 cm = 1.75 m

b) mL -> L

1 L = 1000 mL, so

1 mL = 1/1000 L

5000 mL = 5000/1000 L

5000 mL = 5 L

c) kg -> g

1 g = 1/1000 kg, so

1 kg = 1000 g

0.0055 kg = 0.0055 * 1000 g

0.0055 kg = 5.5 g

d) cm³ -> L

1 L = 1000 cm³, so

1 cm³ = 1/1000 L

3500 cm³ = 3500/1000 L

3500 cm³ = 3.5 L

therefore, we can conclude that 175 cm is 1.75 m, 5000 mL is 5 L, 0.0055 kg is 5.5g and 3500 cm³ is 3.5 L

Answer:

The time taken for the ball to return to the starting point is is 7.4 s

Explanation:

Given;

initial velocity of the ball, u = 36 m/s

the final vellocity at maximum height, v = 0

let time taken for the ball to reach maxmimum height = t

Time taken for the ball to return to the starting point is known as time of flight, calculated as;

[tex]t = \frac{v-u}{-g} \\\\T = 2t\\\\T = \frac{2(0-u)}{-g}\\\\T = \frac{-2u}{-g}\\\\ T = \frac{2u}{g}[/tex]

T = (2 x 36) / 9.8

T = 7.4 s

Therefore, the time taken for the ball to return to the starting point is is 7.4 s

Answer:

50 seconds

Explanation:

divide 350 by 7...

add my tik(tok) slapddaddy

Answer:

I do believe it's 7

Answer:

yor welcome

Explanation:

hi

Answer:

A negative potential energy becomes more negative

Explanation:

Let the charges be - Q₁ and Q₂ . Let the distance between them be d .

Potential energy = k -Q₁x Q₂ / R

= - KQ₁ Q₂ / R

Now if the magnitude of R decreases , the magnitude of potential energy increases . So we see that the negative  potential energy becomes more negative .  

Answer:

Speed of moving clock is

 [tex]V2[/tex] =πr/(86400) m/s

Here,

m and s are SI units of distance and time respectively.

Explanation:

If

radius of circular clock= r

than,

total distance covered on clock=S=2πr m

here, m=SI unit of distance

and required time for covering the total distance=t= 86400s

speed of normal clock=[tex]V1[/tex]=S/t

                                       [tex]V1[/tex]=2πr/86400 m/s

As, moving moving clock is ticking half as fast as normal clock so,

speed of moving clock=[tex]V2[/tex]=[tex]V1[/tex]/2

                                           [tex]V2[/tex]=2πr/(86400)*2 m/s

                                            [tex]V2[/tex] =πr/(86400) m/s

Answer:

7.8 m/'s = Change of accelerates / time taken =7.8/4.9=

Explanation:

please solve that answer

Answer:

Using

Period ( P) is given as

P~√(L/g).

a) since mass has no effect on the period of a pendulum. So, the period will remain 1.8seconds

b) using the formula above ,period varies with the square root of the length. Thus , when the length doubles, the period is multiplied by √2. So, the period is 1.8s*√2 = 2.54s

c) in this case, the period is multiplied by √(1/2).

1.8√(1/2)=1.27s.

d) amplitude of the pendulum doesn't affect the period (unless itsvery high, so, the period is still 1.8s

Answer:

50.8 watt

Explanation:

we know that P=W÷t

W=F.S           S-->distance=50 ft= 15.24 m

F=ma

=100×10=1000 N

SO W= 1000×15.24

        =15240 J

NOW

P=W÷t          t=5 mints = 5×60=300 sec

P=15240÷300

P=50.8 watt

Answer: The fluid  would rise.

Answer:

The Big Bang Theory is the leading explanation about how the universe began. At its simplest, it says the universe as we know it started with a small singularity, then inflated over the next 13.8 billion years to the cosmos that we know today.

Explanation: Hope this help! :)

Answer:

Wellll. I am assuming the direction of speed is in the same direction as the direction of displacement of the train. (i.e. Velocity is positive)

Acceleration is defined as the rate of change of velocity with respect to time (m^s-2)

Explanation:

Answer:

Because they are so close, than can collide very quickly, i.e. it takes less time for a molecule of the solid to 'bump' into its neighborough. Solids are packed together tighter than liquids and gases, hence sound travels fastest in solids.