The density of electric field lines is related to the strength of the field. Is this true or false?

Answer:

Spring constant in N / m = 6,000

Explanation:

Given:

Length of spring stretches = 5 cm = 0.05 m

Force = 300 N

Find:

Spring constant in N / m

Computation:

Spring constant in N / m = Force/Distance

Spring constant in N / m = 300 / 0.05

Spring constant in N / m = 6,000

The final volume of the glass bottle when heated to 30°C is 10.0018 cm³.

The final volume of the glass bottle is calculated by applying the formula for volume expansivity as follows;

ΔV = V₀αΔT

Where

The change in temperature is calculated as;

ΔT = 30°C - 10°C = 20°C

The change in volume of the bottle;

ΔV = 10 cm³ x (9 x 10⁻⁶) x 20°C

ΔV =  1.8 x 10⁻³ cm³

The final volume of the bottle is calculated as follows;

V₂ = V₁ + ΔV

V₂ = 10 cm³ +  1.8 x 10⁻³ cm³

V₂ = 10.0018 cm³

Learn more about volume expansivity here: https://brainly.com/question/29594873

#SPJ1

Answer:

The primary difference is that electromagnetic waves can propagate through a vacuum or empty space, while mechanical waves require a physical medium to transmit energy.

A primary difference between an electromagnetic wave and a mechanical wave is the medium through which they propagate.

Electromagnetic waves can propagate through a vacuum or empty space without requiring a material medium. They are generated by the oscillation and interaction of electric and magnetic fields.

Examples of electromagnetic waves include radio waves, microwaves, infrared, visible light, ultraviolet, X-rays, and gamma rays. These waves can travel through space, air, or other materials, as they do not rely on physical particles to transmit energy.

On the other hand, mechanical waves require a physical medium to propagate. They are disturbances that travel through a material medium, transferring energy from one location to another. Mechanical waves rely on the interaction and displacement of particles within the medium to transmit energy.

Examples of mechanical waves include sound waves, water waves, seismic waves, and waves on a string. These waves cannot travel through a vacuum as they depend on the physical presence and interaction of particles within the medium.

In summary, the primary difference is that electromagnetic waves can propagate through a vacuum or empty space, while mechanical waves require a physical medium to transmit energy.

Learn more about wave here:

https://brainly.com/question/15663649

#SPJ1

Answer:

16 Newton-seconds

Explanation:

Impulse, \(\widehat{J}\), is given by \(\widehat{J}=F\Delta t\), where \(F\) is the magnitude of a force that has been applied for \(\Delta t\) seconds.

Given \(F=80\text{ N}\) and \(\Delta t = 0.2\text{ s}\), we have:

\(\widehat{J}=80 \cdot 0.2 = \boxed{16\text{ Ns}}\)

Answer:

16 Ns

Explanation:

The answer above is correct.

Answer:

yea yes they can they lose their retina but they can dream

Given parameters:

Velocity of the helicopter  = 2.32m/s

Time given  = 5.00s

Unknown:

a. Speed of the mailbag after 5s

b. How far is the mail bag below the helicopter

Solution:

In this problem, we must apply the appropriate motion equation to solve.

For a;

               v  = u + gt  

 v is the velocity of the mail bag

 u is the initial velocity

 g is the acceleration due to gravity

  t is the time taken

         Notice that the initial velocity of the mail bag is 0;

         V  = 0 + 9.8 x 5 = 49m/s

For b;

  Using;

                    h = ut + \(\frac{1}{2}\) gt²

   where u is 0;

                  h  = \(\frac{1}{2}\) x 9.8 x 5²  = 122.5m

The gauge pressure at bottom of vaccine solution will be 16 kPa

Positive pressure is another name for gauge pressure. When a system's internal pressure exceeds that of its surroundings, it is said to be under positive pressure. Any leak that develops in the positively pressured system will therefore escape into the outside world. In contrast, a negative pressure chamber draws air into it.

Given As seen in the illustration, a syringe is held vertically. The container carries a 3 cm tall column of vaccine solution and has an open inner diameter of 1 cm. The needle contains a 2 cm column of vaccine solution and has an open inner diameter of 0.5 mm. At the needle's open end, the solution is exposed to the air. The vaccination solution has a density of 1200 kg/m3.

We have to find the gauge pressure at bottom of vaccine solution

Since the 5N force is applied to vaccine solution the pressure exerted will be much more

Hence the gauge pressure at bottom of vaccine solution will be 16 kPa

Learn more about gauge pressure here:

brainly.com/question/25736513

#SPJ10

The speed of the artillery shell when it hits its target is 100 m/s.

Given:

Initial vertical displacement (y) = 200 m

Vertical displacement at 100 m in the air (y') = 100 m

Final velocity in the vertical direction (vy') = 0 m/s (at the highest point of the trajectory)

Using the equation for vertical displacement in projectile motion:

y' = vy^2 / (2g),

where g is the acceleration due to gravity (approximately 9.8 m/s^2), we can solve for the initial vertical velocity (vy).

100 m = vy^2 / (2 * 9.8 m/s^2),

vy^2 = 100 m * 2 * 9.8 m/s^2,

vy^2 = 1960 m^2/s^2,

vy = sqrt(1960) m/s,

vy ≈ 44.27 m/s.

Now, since the horizontal motion is independent of the vertical motion, the horizontal speed of the shell remains constant throughout its trajectory. Therefore, the speed of the shell when it hits its target is 100 m/s.

Hence, the speed of the artillery shell when it hits its target is 100 m/s.

For more such questions on acceleration:

https://brainly.com/question/460763

#SPJ8

The charge on the capacitor 2 (C₂) is 48μF.

In the circuit diagram, C₁ and C₂ are in series connection, while C₃ is parallel to C₁ and C₂.

\(Q_1 = Q_2 = Q\\\\V = \frac{Q}{C_1} + \frac{Q}{C_2} \\\\V = Q(\frac{1}{C_1} + \frac{1}{C_2} )\\\\Q = V (\frac{C_1C_2}{C_1 + C_2} )\\\\Q = 24 \times (\frac{6 \times 10^{-6} \times 3 \times 10^{-6}}{6\times 10^{-6} \ + \ 3 \times 10^{-6}} )\\\\Q = \frac{4.32 \times 10^{-10}}{9\times 10^{-6}} \\\\Q = 48 \ \mu C\)

Thus, the charge on the capacitor 2 (C₂) is 48μF.

Learn more about charge on capacitor here: brainly.com/question/13578522

Answer:

where?

Explanation:

ill edit my answer when see it

In order to calculate the displacement during this time, we can use the formula below:

So, using the initial velocity V0 = 0, acceleration a = 5.7 m/s² and time t = 6.6 s, we have:

Therefore the displacement is 124.15 meters.

Inertia: tendency of an object to resist changes in its velocity. An object at rest has zero velocity - and (in the absence of an unbalanced force) will remain with a zero velocity. Such an object will not change its state of motion (i.e., velocity) unless acted upon by an unbalanced force.

Answer:

fruit flies

Explanation:

luv you <3

The average acceleration of the motorcycle over the given distance is approximately 9.39 m/s².

To calculate the average acceleration of the motorcycle, we can use the formula:

Average acceleration = (final velocity - initial velocity) / time

First, let's convert the final velocity from km/h to m/s since the distance is given in meters. We know that 1 km/h is equal to 0.2778 m/s.

Converting the final velocity:

Final velocity = 78 km/h * 0.2778 m/s = 21.67 m/s

Since the motorcycle starts from rest (initial velocity is zero), the formula becomes:

Average acceleration = (21.67 m/s - 0 m/s) / time

To find the time taken to reach this velocity, we need to use the formula for average speed:

Average speed = total distance/time

Rearranging the formula:

time = total distance / average speed

Plugging in the values:

time = 50 m / 21.67 m/s ≈ 2.31 seconds

Now we can calculate the average acceleration:

Average acceleration = (21.67 m/s - 0 m/s) / 2.31 s ≈ 9.39 m/s²

To learn more about acceleration

https://brainly.com/question/2303856

#SPJ8

Answer:

\(\boxed {\boxed {\sf 115.15 \ J}}\)

Explanation:

Kinetic energy is the energy an object possesses due to motion. It is calculated with the following formula.

\(E_K= \frac{1}{2} mv^2\)

The mass of the object is 4.7 kilograms. The velocity of the object is 7 meters per second.

Substitute the values into the formula.

\(E_K= \frac{1}{2} (4.7 \ kg)(7 \ m/s)^2\)

Solve the exponent.

\(E_K= \frac{1}{2} (4.7 \ kg)(49 \ m^2/s^2)\)

Multiply the numbers together.

\(E_K = 2.35 \ kg * 49 \ m^2/s^2\)

\(E_K= 115.15 \ kg*m^2/s^2\)

Convert the units. 1 kilogram square meter per square second is equal to 1 Joule.

\(E_K= 115.15 \ J\)

The object has 115.15 Joules of kinetic energy.

Explanation:

Kinetic energy, \(\textbf{\textit{K}}\) is the energy associated with the state of motion of an object. This implies that as a particle accelerates by an external force, the kinetic energy possessed by the particle itself increases. Similarly, the kinetic energy of a particle decreases as an external force decelerates the particle and when the particle is stationary, it's kinetic energy is zero.

We account for such a change of kinetic energy as the energy transferred to the particle from an external force or from the particle to an external force, respectively. This transfer of energy, by a force \(\vec{F}\), is defined as the work done, W on the particle by the force \(\vec{F}\). Positive work denotes the energy transferred to the particle whereas negative work is the transfer of energy from the particle.

Hence, it is obvious that the concept of work and kinetic energy are related and this relationship is defined by the work-energy theorem. The theorem states that that the work done, W by all forces acting on a particle (the resultant force) equals the change in the kinetic energy of the particle, formally written as

                                                  \(W \ = \ \Delta K \\ \\ W\ = \ K_{\text{final}} \ - \ K_{\text{initial}}\)

Recall the kinematic equation for uniform acceleration,

                                               \({v_{\text{final}}}^{2} \ = \ {v_{\text{initial}}}^{2} \ + \ 2a\Delta x\).

For a moving particle, \(\Delta x \ = \ d\), where \(d\) is the displacement of the particle, and from Newton's second law of motion, we know that the acceleration \(a \ = \ \displaystyle\frac{F}{m}\). Hence,

                                      \({v_{\text{final}}}^{2} \ = \ {v_{\text{initial}}}^{2} \ + \ \displaystyle\frac{2Fd}{m} \\ \\ \displaystyle\frac{1}{2}m{v_{\text{final}}}^{2} \ - \ \displaystyle\frac{1}{2}m{v_{\text{initial}}}^{2}\right) \ = \ Fd\)

Additionally, work done, W on a particle by a constant force is the product of the component of the force in the direction of its displacement and the magnitude of the displacement.

                                                    \(W \ = \ Fd\).

Thus,

                                      \(W \ = \ \displaystyle\frac{1}{2}m{v_{\text{final}}}^{2} \ - \ \displaystyle\frac{1}{2}m{v_{\text{initial}}}^{2}\right)\),

in which

                          \(K_{\text{final}} \ = \ \displaystyle\frac{1}{2}m{v_{\text{final}}}^{2}\)   and    \(K_{\text{initial}} \ = \ \displaystyle\frac{1}{2}m{v_{\text{initial}}}^{2}\).

Therefore, in general, for a particle of mass m moving with a speed v, the kinetic energy of the particle is defined as

                                                        \(K \ = \ \displaystyle\frac{1}{2}mv^{2}\).

Substitute the known quantities into the expression above yields

                                              \(K \ = \ \displaystyle\frac{1}{2}(4.7 \ \text{g})(7 \ \text{m s}^{-1})^{2} \\ \\ K \ = \ 115.15 \ \text{J}\)

Two balls with masses M and m are connected by a rigid rod of length L and negligible mass as shown in Figure. For an axis perpendicular to the rod, The moment of inertia of the system is I = μL^2, where μ = mM/(m+M).

To calculate the moment of inertia (I) of the system, we will consider the individual moments of inertia of both balls and then sum them up.

Identify the individual moments of inertia of both balls.
The moment of inertia of a point mass is given by I = m * r^2, where m is the mass and r is the distance from the axis of rotation. For ball M, the distance from the axis of rotation is L, while for ball m, the distance is 0.

Calculate the moments of inertia of both balls.
For ball M: I_M = M * L^2
For ball m: I_m = m * 0^2 = 0

Sum the individual moments of inertia.
I_total = I_M + I_m = M * L^2 + 0 = M * L^2

Substitute μ with mM/(m+M).
Now, let's rewrite the expression for the moment of inertia using μ = mM/(m+M). We need to express M in terms of μ.

M = μ(m+M)/m

Solve for M.

M * m = μ(m+M)

M * m - μM = μm

M(m - μ) = μm

M = μm/(m - μ)

Substitute M in the expression for I_total.
I_total = (μm/(m - μ)) * L^2

Simplify the expression.
I = μL^2

For more such questions on  moment of inertia, click on:

https://brainly.com/question/3406242

#SPJ11

The probable question may be:

Two balls with masses M and m are connected by a rigid rod of length L and negligible mass as shown in Figure. For an axis perpendicular to the rod, Show that this moment of inertia is I=μL^2 , where μ=mM/(m+M)

Answer:

Based on the information provided, the lightbulb lights when the loop rotates because the movement of the wire in an electric or magnetic field causes electrons in the wire to move and become either mechanical energy or an electric current. This energy causes the light to glow. The energy change involved is the conversion of electrical or mechanical energy used to rotate the loop into either light or electrical energy

Explanation:

Answer:

m = 2.76 kg

Explanation:

The mass of water evaporated can be found by using the following formula:

\(Q = mH\\\\m = \frac{Q}{H}\)

where,

m = mass of water evaporated = ?

Q = Energy used = \(\frac{1}{2}(2985\ kcal) = (1492.5\ kcal)(\frac{4.184\ KJ}{1\ kcal})\) = 6244.62 KJ

H = Latent heat of vaporization of water = 2260 KJ/kg

Therefore,

\(m = \frac{6244.62\ KJ}{2260\ KJ\kg}\)

m = 2.76 kg

All quadrilaterals have four sides. So, the correct option is (C).

A quadrilateral is defined as a closed shape and a type of polygon that has four sides, four vertices and four angles that are formed by joining four non-collateral points. The sum of the interior angles of a quadrilateral is always equal to 360 degrees.

The formula for the interior angle sum of a polygon is (n - 2) × 180, where n equals the number of sides of the polygon. There are six basic types of quadrilaterals, these are:

A quadrilateral is a closed figure with 4 sides where a figure with four sides and the figure has a set of parallel sides and does not contain any right angles.

Thus, all quadrilaterals have four sides. So, the correct option is (C).

Learn more about Quadrilateral, here:

https://brainly.com/question/29934440

#SPJ2

In electromagnetic waves, energy is transferred through vibrations of electric and magnetic fields. ... In sound waves, energy is transferred through vibration of air particles or particles of a solid through which the sound travels.

Answer:

because vibration waves are made by sound

Answer:

B. They do not provide explanations for why they are true.

C. They are considered to be proven facts.

Explanation:

edge 2021

The statements describe scientific laws but not theories or hypotheses are they do not provide explanations for why they are true and they are considered to be proven facts.

The law given by the experimenters or scientists after years of observations and experiments based on the scientific reasons are called scientific laws.

The laws are not the proven facts. They even don't explain why the scientific laws are true.

Thus, the correct option is B and C.

Learn more about scientific laws

https://brainly.com/question/15189105

#SPJ2

Answer:

920000

Explanation:

Each kg contains 1,000 grams

The speed of the ball rebounding from the plate is approximately 13.2 m/s.

According to the graph, the greatest force exerted by the football on the force plate during impact is around 1900 N. The ball comes to a halt on the force plate before rebounding.

The kinetic energy of the ball before impact equals the kinetic energy of the ball after the rebound, according to the law of conservation of energy.

The speed of the ball rebounding can be calculated using the formula:

(1/2)mv²= (1/2)mv_0²

where m is the mass of the ball (0.43 kg), v is the speed of the ball rebounding, and v_0 is the initial speed of the ball (15 m/s).

Solving for v, we get:

v = sqrt(v_0² - (2F/m))

where F is the maximum force exerted on the force plate (1900 N).

Plugging in the values, we get:

v = sqrt(15² - (2*1900/0.43)) ≈ 13.2 m/s

Therefore, the speed of the ball rebounding from the plate is approximately 13.2 m/s.

learn more about speed here

https://brainly.com/question/13943409

#SPJ1

Answer:

2.4 m/s". 1

Explanation:

A jet with mass m = 8 x 10* kg jet accelerates down the runway for takeoff at 2.4 m/s". 1

Answer:

The force experienced  is 0.6 N

Explanation:

Given data

length of wire L= 2 m

current in wire I= 0.6 A

magnetic field B= 0.5

The force experienced can be represented as

\(F= BIL\)

\(F= 0.5*0.6*2\\\F= 0.6 N\)