What is the starting volume of water in the graduated cylinder?

Answer:

The statement is not correct.

Explanation:

To know if the statement is correct, we shall determine the velocity of the car after 3 s. This is illustrated below.

Data obtained from the question include:

Initial velocity (u) = 0 m/s

Acceleration due to gravity (g) = 9.8 m/s²

Time (t) = 3 s

Final velocity (v) =?

v = u + gt

v = 0 + (9.8 × 3)

v = 0 + 29.4

v = 29.4 m/s

Thus, the velocity of the car after 3 s is 29.4 m/s.

Hence, the statement made by the friend is not correct as the car has a falling velocity of 29.4 m/s after 3 s.

The answer is 200 joules.

Answer:

Its answer is 200joule.

Explanation:

Hope it's helpful for you

Answer:

0.25 N-m

Explanation:

PE=0.5kx^2; PE=potential engery, k=stiffness of spring, x=displacement

=0.5(50)(0.1^2)

=0.25 N-m

Answer:

130 N basically

Explanation:

D, invisible is not a way light can be transmitted.

Light can be transmitted through a medium such as air, water, glass, or a vacuum. When light is transmitted, it passes through the medium without being absorbed or reflected, allowing it to be seen on the other side of the medium. Transmission of light can occur in a straight line or can be refracted or diffracted, depending on the properties of the medium it is passing through.

Light can be absorbed by a material, which means that the energy of the light is transferred to the material. When this happens, the material may become excited, and the energy can cause a change in the material, such as heating it up, causing it to emit light, or causing a chemical reaction.

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The capacitance of the certain capacitor (C) = 28.02 nF.

To calculate the value of capacitance of the certain capacitor we are using the formula here is,

\(C= K \times \frac{\epsilon_0 A}{d}\)

Here we are given,

K= Dielectric constant of a material by which the capacitor gap is filled with = 3.3

\(\epsilon_0\)= The permittivity of free space = \(8.854 \times 10^{-12} C^2/Nm^2\)

d= The width of the gap = 0.24 mm = 0.00024m.

A= The area of the plates of the capacitor.

As we know,

A = l × b

Here we are given,

l = length of the plate = 59 cm.

b = breath of the plate = 39 cm.

So according to the formula, area of the plate is,

A = l₁ × l₂

   = 59 × 39

   = 2301 cm²

   = 0.2301 m²

So, The area of the plates of the capacitor (A)= 0.2301\(m^2\)

We have to find the capacitance of a certain capacitor, C.

Now we put the known values in the above equation, we can get,

\(C= K \times \frac{\epsilon_0 A}{d}\)

Or, \(C= 3.3 \times \frac{8.854 \times 10^{-12} \times 0.2301}{0.00024}\)

Or, \(C= 2.802\times 10^{-8} F\)

Or,\(C= 28.02\times 10^{-9} F\)

Or,\(C= 28.02 nF\)

From the above calculation we can conclude that, the capacitance of the certain capacitor (C) is 28.02 nF.

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Answer:

Chemical Property

Explanation:

Examples of chemical properties include flammability, toxicity, acidity, reactivity (many types), and heat of combustion.

Its becuase weight and mass are different. Even if an object weighs more than another object it might not have more mass than the other object.

"Bernoulli's principle indicates that increasing the velocity of a fluid will cause its pressure to increase." According to the Bernoulli's principle this statement is incorrect or false.

According to Bernoulli, when he research about flow of the liquid, he finds out that when the speed of liquid is increasing then the pressure on the liquid is decreasing. In other words the potential energy of the liquid will become less.

According to the Bernoulli's principle, when the speed of liquid is increasing then the pressure on the liquid is decreasing. In other words the potential energy of the liquid will become less.

That means when there is less pressure on a tube that gives less pressure in the water and gives a lot of area to flow. Then the flow of the liquid increases.

Not only pressure many other forces that acting on the liquid, if its become less efficient on the liquid. Like gravitational potential energy and many more. Then the liquid flows verry frequently.

But the statement tells opposite to the Bernoulli's principle, So from the discussion we can easily conclude that this statement is incorrect or false.

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Answer:

10.21 m/s

Explanation:

∆x =( v ^2 sin(2θ))/ g

rearrange this to get

v=√Δx·(g÷ sin(2θ))

Plug it in

v=√10·(-9.8÷sin(2·35))

Solve

v=10.21

Answer:

The displacement of the pedestrian after 2.5 seconds is -10 meters.

Explanation:

Let \(x(t)\) and \(t\) be position, measured in meters, and time, measured in seconds, respectively. From definition of displacement, we get that:

\(d = x(2.5\,s)-x(0\,s)\)

Where:

\(x(0\,s)\) - Position of the pedestrian at 0 seconds, measured in meters.

\(x(2.5\,s)\) - Position of the pedestrian at 2.5 seconds, measured in meters.

If \(x(0\,s) = 10\,m\) and \(x(2.5\,s) = 0\,m\), then the displacement of the pedestrian after 2.5 seconds is:

\(d = 0\,m-10\,m\)

\(d = -10\,m\)

The displacement of the pedestrian after 2.5 seconds is -10 meters.

Answer:

Below

Explanation:

The block does not slide, so the force of friction equals the down the slope force.  Ff = 26 n     the Fn  is given as 42 N

Definition of  static coefficient of friction =  Ff/Fn = 26/42 = .62

Answer:

Initial velocity, u = 23.33 m/s

Explanation:

Given the following data;

Acceleration = 2.5 m/s²

Distance = 4 km to meters = 4000 meters

Time = 0.8 mins to seconds = 0.8 * 60 = 48 seconds.

To find the initial velocity, we would use the second equation of motion;

\( S = ut + \frac {1}{2}at^{2}\)

Where;

S represents the displacement or height measured in meters.

u represents the initial velocity measured in meters per seconds.

t represents the time measured in seconds.

a represents acceleration measured in meters per seconds square.

Substituting into the equation, we have;

4000 = u*48 + ½*2.5*48²

4000 = 48u + 1.25*2304

4000 = 48u + 2880

48u = 4000 - 2880

48u = 1120

Initial velocity, u = 1120/48

Initial velocity, u = 23.33 m/s

saitama is the strongest

Answer:

The velocity of one of the trains is 15 m/s

The velocity of the other train 5 m/s

Explanation:

The given parameters of the two trains and the motion of the trains are;

The length of each train, l = 100 m

The time it takes one train to overtake the other, Δt₁ = 20 s

The time it takes the one train to cross the other, Δt₂ = 10 s

Let 'v₁' represent the velocity of one of the trains, and let 'v₂' represent the velocity of the other train, we have;

When one train overtakes the other, the trains are moving in the same direction and the relative velocity of the overtaking train, v = v₁ - v₂

The distance the train travels when overtaking or crossing, d = 2 × l

∴ d = 2 × 100 m = 200 m

d = 200 m

Therefore, we get;

v = v₁ - v₂ = d/Δt₁ = (200 m)/(20 s) = 10 m/s

∴ v₁ - v₂ = 10 m/s                     \({}\)                    Equation (1)

When one train crosses the other train, the trains are moving in opposite directions on the different tracks, therefore, we have;

For the overtaking trains, v = v₁ + v₂ = d/Δt₂ = (200 m)/(10 s) = 20 m/s

∴ v₁ + v₂ = 20 m/s                              \({}\)          Equation (2)

Adding equation (1) to equation (2) gives;

v₁ - v₂ + v₁ + v₂ = 2·v₁ = 10 m/s + 20 m/s = 30 m/s

∴ v₁ = 30 m/s/2 = 15 m/s

The velocity of one of the trains, v₁ = 15 m/s

From equation (2), we  have;

v₁ + v₂ = 20 m/s

v₂ = 20 m/s - v₁

∴ v₂ = 20m/s - 15 m/s = 5 m/s

The velocity of the other train, v₂ = 5 m/s.

Answer:

B. 57.4 N horizontal (right)

Explanation:

using cos method:

\(cos(35) = \frac{vertical force}{100}\)

\(vertical force = 57.4 N\)

As its vertical, the direction of this force should be up.

Answer:

Compound 'A' C5H12 does not react with phenyl hydrazine. Oxidation of 'A' with K2Cr2o7,/H" gives B' (c5H10o). Compound 'B' reacts with phenyl hydrazine but does not give Tollen's test. The

Answer:

Analyse the material required to build the instrument gauge and then keep a buffer stock of 1%

Explanation:

The right quantity to buy differs for every material. There are some materials which are very expensive and are very less used than buffer stock for such materials cannot be purchased. Usually the buffer is to be on the safe side from the shortage of the material. The buffer stock kept is around 1 to 2% for metal materials.

Given the fact that the arrow is in motion, it the follows that the arrow possesses kinetic energy.

The kinetic energy is the energy that is possessed by a body by virtue of its motion. This is different form the potential energy of the body which is the energy that the body possesses as a result of the fact that the object is located at a particular position. These are actually the two kinds of mechanical energy that we have in the study of physics.

If we consider this matter closely, we would see that the arrow as shown is in motion. The arrow does posses a velocity and such the arrow is in motion. As long as we can see that the arrow is in motion, it the follows that the arrow as we can see does and in fact possesses the kinetic energy.

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Answer:

See below

Explanation:

See answer already posted HERE:
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a) Tina drives approximately 69.93 meters before passing David.

b) Her speed as she passes him is approximately 34.77 m/s.

To find the distance Tina drives before passing David, we can use the equation:

\(\[d = ut + \frac{1}{2}at^2\]\)

where:

d is the distance traveled,

u is the initial velocity (0 m/s for Tina),

a is the acceleration (2.90 m/s² for Tina), and

t is the time.

First, we need to determine the time it takes for Tina to catch up with David. Since David is driving at a constant speed of 31.0 m/s, the time Tina needs to catch up can be found using the equation:

\(\[t = \frac{d}{v}\]\)

where:

\(\(t\)\)  is the time,

\(\(d\) \\\) is the initial distance between Tina and David (0 m), and

v  is the relative velocity of Tina with respect to David (31.0 m/s).

Substituting the values, we find:

\(\[t = \frac{0\,m}{31.0\,m/s} = 0\,s\]\)

Since Tina begins to accelerate at the instant when David passes, she starts from rest and requires no time to catch up.

a) Using the equation for distance, we find:

\(\[d = ut + \frac{1}{2}at^2 = 0 + \frac{1}{2}(2.90\,m/s²)(0\,s)^2 = 0\,m\]\)

Therefore, Tina does not drive any distance before passing David.

b) Since Tina catches up with David at the same instant he passes, her speed is equal to his speed. Thus, her speed as she passes him is approximately 31.0 m/s.

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Tina drives approximately 158.2 meters before passing David. Tina's speed as she passes David is 31.0 m/s.

To find the distance Tina drives before passing David, we need to determine the time it takes for Tina to catch up with David first. We can use the equation:

d = v0t + 0.5at2

Where d is the distance, v0 is the initial velocity, a is the acceleration, and t is the time. Rearranging the equation to solve for t:

t = (v - v0) / a

Substituting the given values:

t = (0 - 31.0 m/s) / (-2.90 m/s²)

t ≈ 10.69 seconds

To find the distance:

d = v0t + 0.5at2

d = 0 + 0.5(-2.90 m/s²)(10.69 s)2

d ≈ 158.2 meters

Therefore, Tina drives approximately 158.2 meters before passing David.

To find Tina's speed as she passes David, we can use the equation:

v = v0 + at

Substituting the given values:

v = 0 m/s + (2.90 m/s²)(10.69 s)

v ≈ 31.0 m/s

Therefore, Tina's speed as she passes David is 31.0 m/s.

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97.6°F to C = 36.4444°C

Calculation:

97.6°F = (97.6 - 32) × 5/9 = 36.4444°C

how is Farenheit defined?

Fahrenheit is a temperature scale used in the United States and a few other countries. It is based on the work of German physicist Daniel Gabriel Fahrenheit, who began his work in 1724. On the Fahrenheit scale, 0 degrees is the freezing point of a solution of brine made from equal parts of ice and salt, and 100 degrees is the temperature of the human body. Other important temperatures on the scale include 32 degrees, the freezing point of water, and 212 degrees, the boiling point of water. The Fahrenheit scale is still used in the United States today due to its familiarity to many American citizens.

Therefore, 97.6°F to C = 36.4444°C

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Answer:

Explanation:

The work done by an object can be found by using the formula

workdone = force × distance

From the question we have

workdone = 300 × 10

We have the final answer as

Hope this helps you

The minimum velocity vo required for the bob to swing through a complete circle is:

\(vo = \sqrt\frac{(m1v02 + m2v02 - m2g2l2)}{m1}\)

Using conservation of energy, we can solve for the minimum velocity required for the bob to swing through a complete circle.

The total initial energy of the system is:

\(Ei =\frac{1}{2} m1v02 +\frac{1}{2} m2v02\)

The total final energy of the system is:

\(Ef = \frac{1}{2} m2vf2 + mg2l2\)

where vf is the velocity of the bob after the collision and g is the gravitational acceleration.

Equating the initial and final energy, we have:

\(\frac{1}{2}m1v02 +\frac{1}{2} m2v02 =\frac{1}{2}m2vf2 + mg2l2\)

Solving for vf, we have:

\(vf = \sqrt{} \frac{(m1v02 + m2v02)}{m2 - g2l2}\)

The minimum velocity required for the bob to swing through a complete circle is given by the expression:

\(vo = \sqrt \frac{(m2vf2 + mg2l2)}{m1}\)

Substituting the expression for vf, we have:

\(vo = \sqrt{ \frac{(\frac{m2(m1v02 + m2v02)}{m2 - g2l2})}{m1}\)

\(vo = \sqrt\frac {(m1v02 + m2v02 - m2g2l2)}{m1}\)

Therefore, the minimum velocity vo required for the bob to swing through a complete circle is:

\(vo = \sqrt\frac{(m1v02 + m2v02 - m2g2l2)}{m1}\)

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Correct option is C, Centripetal force remains constant.

Centripetal Force -

Any force that changes the direction of motion toward the center of a circular motion is known as a centripetal force. The part of the force that produces the centripetal force is the part that is perpendicular to the velocity.

A net force that keeps an object moving in a circular motion is known as a centripetal force.

Centripetal force has the formula =mv2r. The newton or kgms2 is the measure of force.

A centripetal force is applied to any item travelling in a circle (or along a circular path). In other words, the object is being physically pushed or pulled in the direction of the circle's center. This is the necessary centripetal force.

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Answer:

4m/s^2

Explanation:

u find the average of the two velocities then place the outcome in the acceleration formula given time as 6.3 seconds .....dividing the average of the velocities