Define specific charge of an electron. Write its value.​

Answer:

200

Explanation:

subtract it it's 275

Answer ) Sound level equation

The intensity of a sound wave is related to its amplitude squared by the following relationship: I=(Δp)22ρvw I = ( Δ p ) 2 2 ρ v w . Here Δp is the pressure variation or pressure amplitude (half the difference between the maximum and minimum pressure in the sound wave) in units of pascals (Pa) or N/m2.

Answer:

[tex]v_f=4\:\mathrm{m/s\: in\:Biff's\:direction}[/tex]

Explanation:

Using the Law of Conservation of Momentum, we can set up the following equation:

[tex]m_2v_2-m_1v_1=m_fv_f[/tex], where [tex]m_1v_1[/tex] is Bruce's momentum and [tex]m_2v_2[/tex].

Plugging in given values, we get:

[tex]90\cdot7-45\cdot2=(90+45)v_f, \\v_f=\frac{540}{135}=\fbox{$4\:\mathrm{m/s}$}[/tex].

Answer:

Explanation:

As the car Started from rest means that Initial Velocity "Vi = 0 m/s" and final Velocity is given "Vf = 42m/s". Time is given "t = 6.2s"

Acceleration is required a =?

Use Formula;;    a = [tex]\frac{Vf-Vi}{t}[/tex]

a = [tex]\frac{42-0}{6.2}[/tex]

a = 6.7741 m/s² ≈ 6.8 m/s²

Mark me as brainliest if you got it...

Answer:

words that have the same sound but different spellings and meaning

Explanation:

Homophones are generally words that sound the same but have different spellings and even meaning.

For example the words new and knew are homophones.

They have the same sound when pronouncing but their meaning is different.

Also, the words bawl and ball are homophones.

We see that both words have very similar pronunciation but their meanings are completely different.  

Answer:

Right now I have three.

Explanation: Thanks for the points luv ^-^.

Answer:

I have two

Explanation:

Answer:

a = 0.009 J

b = 0.19 m/s

c = 0.005 J and 0.004 J

Explanation:

Given that

Mass of the object, m = 0.5 kg

Spring constant of the spring, k = 20 N/m

Amplitude of the motion, A = 3 cm = 0.03 m

Displacement of the system, x = 2 cm = 0.02 m

a

Total energy of the system, E =

E = 1/2 * k * A²

E = 1/2 * 20 * 0.03²

E = 10 * 0.0009

E = 0.009 J

b

E = 1/2 * k * A² = 1/2 * m * v(max)²

1/2 * m * v(max)² = 0.009

1/2 * 0.5 * v(max)² = 0.009

v(max)² = 0.009 * 2/0.5

v(max)² = 0.018 / 0.5

v(max)² = 0.036

v(max) = √0.036

v(max) = 0.19 m/s

c

V = ±√[(k/m) * (A² - x²)]

V = ±√[(20/0.5) * (0.03² - 0.02²)]

V = ±√(40 * 0.0005)

V = ±√0.02

V = ±0.141 m/s

Kinetic Energy, K = 1/2 * m * v²

K = 1/2 * 0.5 * 0.141²

K = 1/4 * 0.02

K = 0.005 J

Potential Energy, P = 1/2 * k * x²

P = 1/2 * 20 * 0.02²

P = 10 * 0.0004

P = 0.004 J

The total energy of the system is 0.009 J

The maximum speed of the object is 0.19 m/s

The kinetic and potential energies of the system when the displacement is 2.00 cm are 0.005 J and 0.004 J respectively

The object is under simple harmonic motion.

Given that the mass of the object m =0.5 kg , spring constant k = 20N/m

(a) The total energy of the system in SMH,

[tex]E=\frac{1}{2}kA^2[/tex]

If the amplitude of motion A = 3cm = 0.03m, then total energy

[tex]E=\frac{1}{2}*20*0.03*0.03 J\\\\E = 0.009J[/tex]

E = 0.009J is the total energy of the system.

(b) maximum speed of the object

the maximum kinetic energy of the object = total energy of the object

[tex]\frac{1}{2} m(v_{max})^{2} =E\\\\v_{max}=\sqrt{2E/m}\\\\v_{max}=\sqrt{2*0.009/0.5}\\\\v_{max}=0.19m/s[/tex]

0.19 m/s is the maximum speed

(c) KE and PE when x = 2cm = 0.02m

potential energy at x = 0.02

[tex]PE=\frac{1}{2}kx^2\\\\PE=\frac{1}{2}*20*0.02*0.02\\\\PE= 0.004J[/tex]

Now, Kinetic energy + potential energy = total energy

KE + PE = E

KE = E - PE

KE = 0.009J - ).004J

KE = 0.005J

The kinetic and potential energies are 0.005 J and 0.004 J respectively.

Learn more about SHM:

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Answer:

Explained below

Explanation:

- Friction is the force that opposes the motion between two or more objects/surfaces in contact with each other.

- On an inclined plane, the coefficient of static friction is given by the relation;

μ = F_max/F_n

Where;

F_max is maximum frictional force before slip = mg sin θ

F_n is normal force = mg cos θ

Thus;

μ = mg sin θ/mg cos θ

μ = tan θ

Answer:

[tex]V_{pa}=690km/hr[/tex]

Explanation:

In order to solve this problem, we can start by drawing a diagram of what the problem looks like. (See attached picture).

We can treat this as a vector problem, so we can start by finding the velocities of the plane with respect to the earth as it goes north and east. Velocity is found by using the following formula:

[tex]Velocity=\frac{distance}{time}[/tex]

so

[tex]V_{paN}= \frac{780km}{2hr}[/tex]

[tex]V_{paN}=390 km/hr[/tex]

Since air isn't affecting the north direction of the plane, we will keep this as the velocity due north.

Now let's find the velocity of the plane with respect to the earth towards the east:

[tex]V_{pE}=\frac{810km}{2hr}[/tex]

[tex]V_{pE}=405 km/hr [/tex]

In this case, since the wind is blowing from east to west, then it affects directly the velocity of the plane with respect to the earth, so we can use the following formula to determine the Velocity of the plane with respect to the air in the eastern direction:

[tex]V_{paE}-V_{a}=V_{pE}[/tex]

so we can solve this for the velocity of the plane on the air towards the east, so we get:

[tex]V_{paE}=V_{pE}+V_{a}[/tex]

so we get:

[tex]V_{paE}=405 km/hr + 165km/hr[/tex]

[tex]V_{paE}=570 km/hr[/tex]

So now we can use this data to find the velocity of the plane with respect to the air:

[tex]V_{pa}=\sqrt{V_{paN}^{2}+V_{paE}^{2}}[/tex]

so we get:

[tex]V_{pa}=\sqrt{(390km/hr)^{2}+(570km/hr)^{2}}[/tex]

[tex]V_{pa}=690.65 km/hr[/tex]

Answer:

16÷8=2

Explanation:

if you run 8 mi an hour than in 16 mi you would have run 2 hours

Answer:

9.54 Kpa

Explanation:

Given :

Pheart = 13.3 * 10^3

Density of blood (ρ) = 1060 kg/m³

Difference in height of brain and heart in standing position = - 0.5

Difference in height of Brain a d heart in bending position = 0.4

g = acceleration due to gravity = 10 m/s²

Blood pressure of brain in standing position:

Pheart + ρ*g(-0.5)

13.3 * 10^3 + 1060 * 10 * - 0.5

13300 - 5300 = 8000 pascal = 8Kpa

Blood pressure of brain in bending position:

Pheart + ρ*g(0.4)

13.3 10^3 + 1060 * 10 * 0.4

13300 + 4240 = 17540 Pa = 17.54 Kpa

17.54Kpa - 8Kpa

= 9.54 Kpa

Answer:7139800000

Explanation:

The largest planet in the solar system is Jupiter. Its equatorial diameter is approximately 143,000 kilometres (ca. 88,856 mi miles).

Jupiter is a gas giant because it consists largely of gas and liquid, as opposed to solid substance. With an equator diameter of 142,984 kilometres (88,846 mi), it is the solar system's biggest planet.

About 80% of Jupiter is hydrogen, and 20% is helium. Over a solid core, a thick layer of liquid hydrogen is covered by swirling gas. At 1,000 kilometres below the cloud layer's outer edge, there is a lot of pressure. The hydrogen gas changes into a liquid there.

Therefore, By squaring the scale factor for length, the scale factor for area may be calculated. Consequently, s2 is the scale factor for area. If the situation is the opposite, a solution to the issue under investigation is offered. The area scale factor is 2.

Learn more about Jupiter here:

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#SPJ2

Answer:

Because psychology helps you understand the mind of someone else. It can teach you about traits people may have based on what you see, or a likely personality of someone based on their history, and so many other things. Psychology helps you understand a whole other person, and understanding people is a big part in many things such as medicine, STEM, nursing, teaching, and many other things. Understanding people and the things around you is a necessary skill.

Answer:

93312000 Joules

Explanation:

Energy can be explained as the capacity for doing work. And can be expressed as

E= pt....................eqn(1)

Where

E= Energy in Joules

P= power in Watt= 2.00W

t= time in seconds

Time= 18 months, which can be converted to "seconds" as;

18 months = [ 18 monthsx 30 days x 24 hours x 60 min x 60 sec] = 46656000

Then

time= 46656000 seconds

Power=2 watt

If we substitute into equation (1) we have

Energy = 2 watt × 46656000 seconds

Energy= 93312000 Joules

Answer:

In our house ceilings.

Explanation:

In our daily life, iron rod is used in the construction of ceiling of our homes which made our ceiling stronger enough to make it multi story. It is extensively used in big construction projects such as multi story buildings and other tall buildings etc. So we can say that iron rod is used for construction of big houses and buildings.

Answer:

hello your question is incomplete attached below is the complete question with the options

answer : Doubling the Diameter increases the heat transfer rate by a factor of 4  ( B )

Explanation:

The heat transfer in the axial direction of the cylinder can be calculated/determined as attached below

[tex]\frac{q_{2} }{q_{1} } = \frac{(2D)^2}{D^2}[/tex]

[tex]q_{2}[/tex] = 4[tex]q_{1}[/tex]  ( This shows that Doubling the diameter increases the heat transfer rate by a factor of 4 )

Answer:

c. 337

Explanation:

can someone answer my question

Answer:

[tex]\tau=20000\ Nm[/tex]

Explanation:

Given that,

The force the cable exerts on the bridge is 5000N

The length of the bridge is 8 m

We need to find the torque caused by the cable pulling horizontally on the inclined draw bridge. The torque acting on it is given by :

[tex]\tau=Fr[/tex]

Putting all the values,

[tex]\tau=5000\ N\times 8\ m\\\\=20000\ Nm[/tex]

So, the required torque is 20000 Nm.

Answer:

The energy possessed by a body because of its motion, equal to one half the mass of the body times the square of its speed is called its kinetic energy. Hence, when velocity is doubled, kinetic energy becomes 4 times.

Explanation:

Answer:

1: E

2: A

3: C

4: B

5: D

Explanation:

Answer:

see that for the same pressure the displaced height in each cylinder is different because its diameter is different.   Pascal's principle

Explanation:

The pressure on a system is given by the relations

         P = ρ g h

         P = F / A

where ρ is the density of the liquid, h the height and A the area

The expressions above we see that if for the same height the pressure is the same regardless of the shape of the cylinder.

With the second expression we see that if the system has a different area, the pressure is

         P = [tex]\frac{F_{1} }{A_{1} } = \frac{F_{2} }{A_{2} }[/tex]

where we use subscript 1 for one body and subscript 2 for the other body

         F₁ = [tex]\frac{A_{1} }{A_{2} } F_{2}[/tex]

The cylinder displacement is

         V = A h

where V is the volume and h the height, in general the liquids are incompressible therefore the displaced volume is constant in the two bodies

         V = A₁ h₁ = A₂ h₂

         [tex]\frac{A_{1} }{A_2} = \frac{h_2}{h_1}[/tex]

we substitute

        F₁ = [tex]\frac{h_2}{h_1}[/tex] F2

From here we see that for the same pressure the displaced height in each cylinder is different because its diameter is different.

If the diameter is the same, the offset height is the same

Answer:

Explanation:

Sample Response: Sound travels faster in a warm room because temperature affects the speed of a wave. In a warm room, the particles of air move faster and have higher chances of bumping into each other, which then increases the instances of energy transfer.

Explanation:

Joule, unit of work or energy in the International System of Units (SI); it is equal to the work done by a force of one newton acting through one metre. ... In electrical terms, the joule equals one watt-second—i.e., the energy released in one second by a current of one ampere through a resistance of one ohm.

Answer:

  58.9 N [W24.8°N]

Explanation:

The vectors are at right angles, so the magnitude of their sum is ...

  √(38² +45²) ≈ 58.9 . . . . newtons

The angle Fc makes with Fa can be found using the arctangent:

  angle between Fa and Fc = arctan(45/38) ≈ 49.8°

The direction required for the sum of the vectors to be zero is the opposite of [E(49.8° -25°)S], so is [W24.8°N]

The vector that makes the sum zero is 58.9 N [W24.8°N].

Answer:

work done = 71.5 J

Explanation:

Given that,

Energy = Fifty eight J

Mass of box = 12.0 Kg

Speed = 1.5 m/s

U = work done

The external force acts solely on the box and also the earth system. conjointly note that the work done by external force

= modification of energy of the system

U = work done - K

Also recall that the box is moving with constant speed therefore, there will not be modification in acceleration, hence, there'll be no modification in K.E..

Therefore, K is adequate to zero.

K= 0

U = work done = energy

U = 58.0 J

work done by pushing force = K + U

work done = final K.E. - initial K.E. + U ........1

Initial K.E. = zero

Substitute the mandatory values into equation one

work done = 1/2m v² - zero + U

work done= 0.5 x 12.0 x 1.5² + 58.0

= 13.5+58.0

work done = 71.5 J

The world one by the pushing force is 71.5 J

Answer:

gravity pulls objects down to earth.

Explanation

Because Isaac Newton stated that. In the first law, an object will not change its motion unless a force acts on it. In the second law, the force on an object is equal to its mass times its acceleration. In the third law, when two objects interact, they apply forces to each other of equal magnitude and opposite direction.

Answer:

I think A not sure took this test 5  yrs ago

Explanation: