What is the speed of a bus if it
covers 1.5km in 30 seconds?
a. 50km/Hr
b. 500m/s
c. 50m/s
d. 1500m/s​

Answer: Try A. 110 Hz

Explanation:

Answer:

i got 110 Hz..

Explanation:

To calculate the initial acceleration of the negatively charged polystyrene sphere towards the positive plate, we can use the equation for the electric force on a charged object and Newton's second law of motion.

The electric force between two charged objects is given by Coulomb's law:

F = k * (q1 * q2) / r^2

where:

F is the electric force,

k is the electrostatic constant (approximately 9 x 10^9 N m^2/C^2),

q1 and q2 are the charges of the two objects,

r is the distance between the charges.

The charge on the sphere is given as -9.5 x 10^-19 C. After losing one electron, the charge becomes -9.5 x 10^-19 C + (-1.6 x 10^-19 C) = -11.1 x 10^-19 C.

The force acting on the sphere due to the electric field between the parallel plates is given by:

F = q * E

where:

F is the force,

q is the charge,

E is the electric field strength.

The electric field strength between the parallel plates is given by:

E = V / d

where:

V is the potential difference between the plates,

d is the distance between the plates.

Given:

V = 170 V (potential difference between the plates)

d = 5.0 mm = 0.005 m (distance between the plates)

q = -11.1 x 10^-19 C (charge on the sphere)

Substituting the values into the equation, we have:

F = (-11.1 x 10^-19 C) * (170 V / 0.005 m)

Simplifying:

F = -11.1 x 10^-19 C * 34,000 N/C

F ≈ -3.77 x 10^-14 N

The force acting on the sphere is approximately -3.77 x 10^-14 N. Since the force is negative, it indicates that the direction of the force is towards the negative plate (opposite to the direction of acceleration).

Now, we can calculate the acceleration of the sphere using Newton's second law:

F = m * a

where:

F is the force,

m is the mass of the sphere (which we assume to be constant),

a is the acceleration.

Assuming the mass of the sphere is m, we can rearrange the equation to solve for acceleration:

a = F / m

Since the mass of the sphere is not given, we cannot determine the numerical value of acceleration without additional information. However, the direction of acceleration is towards the negative plate.

Therefore, the initial acceleration of the negatively charged polystyrene sphere towards the positive plate cannot be determined without knowing the mass of the sphere.

Answer:

5.897159 kilograms

Answer:

5.897159 kilograms

Explanation:

5,897,159÷1000000=5.897159

Answer:

10 newtons

Explanation:

Work = Force * Distance

50 J = F * 5m

F = 50 / 5 = 10N

Answer:

I would be 5 centimeters I think

Answer:

5.972 × 10^24 kg

Explanation:

Answer:

Magnetism is one aspect of the combined electromagnetic force. It refers to physical phenomena arising from the force caused by magnets, objects that produce fields that attract or repel other objects.

What are the following statements?

Answer:

the total flight time is 1.29 s

Explanation:

The computation of the total flight time is given below:

The initial velocity is 15 m/s = v

And, the angle from horizontal is \(\theta = 25\ degrees\)

Now the total time is

\(t = \frac{2\times v\times \sin \theta }{g} \\\\= \frac{2\times 15\times sin 25^{\circ}}{9.8} \\\\= 1.29 s\)

Hence, the total flight time is 1.29 s

Alban Geissler, who developed the SKYRAY carbon fiber wing with Christoph Aarns, suggested after Baumgartner's jump that the wing he used was a copy of two prototype SKYRAY wings sold to Red Bull (Baumgartner's sponsor) two years earlier. - wiki

The circuit shown has the drawback that it can only operate with alternating current.

The correct answer is D

A type of electrical current known as alternating current (AC) alternates the flow of electrons periodically or in cycles between two directions. Alternating current (AC) is the kind of current that circulates through electrical outlets used in everyday homes and power lines.

Both alternating current (AC) and direct current (DC) are types of electric current (DC). The way that electrons move determines how AC and DC are different from one another. While the flow of electrons in AC is constantly changing, moving first ahead and then backward, as opposed to DC's steady movement in one direction

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Answer:

b

Explanation:

Answer:

B. Vastus Lateralis

Explanation:

The vastus lateralis muscle is located on the side of the thigh. This muscle is the largest of the quadriceps group.

Answer:

it is dropped from a height of 10m

Explanation:

Answer:

57.1 meters

Explanation:

the distance the body has fallen is given by

  d = 1/2 a t^2     with a = 9.8m/s^2   this becomes

d = 4.9 t^2          

   now we want   the distance in one more second to equal the distance fallen before that one second

   or     4.9 t^2   =   4.9 (t+1 )^2 - 4.9 t^2    re-arrange

         2 * 4.9 t^2 = 4.9 (t+1)^2        simplify to

            0 = - 4.9 t^2 + 9.8 t + 4.9     use Quadratic Formula to find

                            t = 2.414  

   then t +1 = 3.414

this corresponds to distance    d = 1/2 at^2 = 1/2 ( 9.8) (3.414)^2 = 57.1 meters

check:    in 2.414 seconds distance =   1/2 a t^2 =  28.6

              in one second more distance =   1/2 (9.8)(3.414)^2 = 57.1      

                       so in the last one second it has fallen approx another 28.6 m

Check !  

Answer:

The weak nuclear force perhaps?

Explanation:

the weak nuclear force is the fundamental force responsible for the radioactive decay of particles

Answer: it’s C - All obstacles..

Explanation: Just took the quiz

Answer:

Energy is absorbed by the atom

The work done by the magnetic field in one orbit is: \(W = ΔU= -m(b)r\)Now, the kinetic energy gained by the electron in one orbit is given by: KE = W. Therefore,\(KE = -m(b)r\). The kinetic energy gained by the electron in one orbit is -m(b)r.

a) Relativistic momentum of an electron:Relativistic momentum can be determined using the given formula:

m = (γ) moLet’s put the given values into the above equation.

The speed of light = c

Radius of orbit = r

Magnetic field = B

Now, we need to calculate the momentum. Therefore, we use the following formula:

\(p = mv\)

Using this formula, we get:

\(p = (γ) mo c\)

Therefore, the momentum of the electron is p = (γ) mo c.b) Energy gained by an electron:Given data:

Radius of orbit = r

Magnetic field = \(B= Bo + bt\) (where b and Bo are positive constants)

The expression for the force on an electron moving perpendicular to a magnetic field is given by

:\(F = Bqv\)

Where v is the velocity of the electron and q is its charge. Here, the direction of the force is perpendicular to both the velocity and the magnetic field.

As the magnetic field increases, the force on the electron will increase. The electron will spiral outwards. However, the energy of the electron remains constant.

This means that the kinetic energy of the electron must increase as its velocity increases, in order to maintain the radius of the circular path. The kinetic energy gained by the electron in one orbit can be calculated as follows: KE = work done by the magnetic field on the electron

The work done on the electron by the magnetic field is given by the change in magnetic potential energy. The magnetic potential energy is given by:\(U = -mB\)

The negative sign is due to the fact that the electron has a negative charge. As the magnetic field increases, the magnetic potential energy of the electron increases. The change in magnetic potential energy is given by:ΔU = -mΔB

Substituting the value of magnetic field, we get:

\(ΔU = -m(b)r\)

Therefore, the work done by the magnetic field in one orbit is:

\(W = ΔU= -m(b)r\)

Now, the kinetic energy gained by the electron in one orbit is given by:KE = W

Therefore,\(KE = -m(b)r\)

The kinetic energy gained by the electron in one orbit is -m(b)r.

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Answer:

1 N2 +3 H2 ---> 2NH3

Explanation:

hope this helps

do mark it :D

To start a fire, the camper uses a lens with an 18 cm focal length to focus the sun's rays on a piece of wood.

The focal length of a lens determines its ability to converge or diverge light. In this case, the camper wants to concentrate sunlight onto a specific point on the wood, raising its temperature enough to ignite a fire. By placing the lens between the sun and the wood, the lens refracts and converges the sun's rays, forming a focused spot on the wood's surface. The focal length of 18 cm indicates that the lens will converge the light at a distance of 18 cm from its surface. By adjusting the position of the lens, the camper can position the focused spot on the wood, generating enough heat to ignite it and start a fire.

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The answer is C. Rectum.

Answer:

You have a severe case.

Explanation:

My anus smells foul, like poop or diarrhea. Why? Like your anus might be tired of making the same old sensational brown. No fear needed! Anus Maker is here! With this app, you can post poop photos for help if you need! No more foul sensational browns! Start your free Anus Maker trial today!

Answer:

d.) Newton's first law

Explanation:

This is also called the law of inertia, which means that an object in motion will not stop unless a force is acted upon it, and vice versa. Try this out with a piece of paper and a quarter. Pull the paper from under the quarter slightly quick, and the quarter will stay on the table. Hope i helped you.

Your answer would be Device A.

Answer:

Device A because it would use more voltage :D

Explanation:

Answer:

Two examples of materials containing Bose-Einstein condensates are superconductors and superfluids. Superconductors conduct electricity with virtually zero electrical resistance: Once a current is started, it flows indefinitely. The liquid in a superfluid also flows forever.

Explanation:

According to Boyle's Law, there is an inverse relationship between pressure and gas volume.

Therefore, option b. There is an inverse relationship between pressure and gas volume is the correct answer.

Boyle's Law is defined as the principle that explains the relationship between the volume and pressure of a gas at a constant temperature. It is formulated by Robert Boyle, an Irish physicist and chemist, in the 17th century. Boyle's Law states that the pressure of a given amount of gas is inversely proportional to its volume, provided the temperature remains constant.

Mathematically, it can be expressed as

P₁V₁ = P₂V₂,

where P₁ and V₁ are the initial pressure and volume of the gas, respectively, and P₂ and V₂ are the final pressure and volume of the gas. Therefore, option b. There is an inverse relationship between pressure and gas volume is the correct answer.

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The west coast of the united states receives two high tides and two low tides of varying heights per day.  Tidal pattern is  mixed semidiurnal tidal cycle

Sun and moon exert force on the ocean due to tides moves through the ocean  Tide are very long period waves whose motion is directed by the effect of moon and sun .  Tides originate in the ocean and progress toward the coastlines where they appear as the regular rise and fall of the sea surface.

An area has a diurnal tidal cycle if it experiences one high and one low tide every lunar day. An area has a semidiurnal tidal cycle if it experiences two high and two low tides of approximately equal size every lunar day An area has a mixed semidiurnal tidal cycle if it experiences two high and two low tides of different size every lunar day.

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To find the value of t when the cart is first located at x = 8.47 cm, we need to set the given equation equal to 8.47 cm and solve for t. Therefore, we have:

8.47 cm = (12.4 cm) cos[(6.35 s^-1)t]

Dividing both sides by 12.4 cm, we get:

cos[(6.35 s^-1)t] = 0.6835

Taking the inverse cosine (cos^-1) of both sides, we get:

(6.35 s^-1)t = 46.13°

Multiplying both sides by (1 rad/57.3°) to convert degrees to radians, we get:

(6.35 s^-1)t = 0.805 rad

Finally, solving for t, we get:

t = (0.805 rad)/(6.35 s^-1) = 0.127 s

Therefore, the cart is first located at x = 8.47 cm at a time of t = 0.127 s after t = 0.00 s.
The position of an air-track cart oscillating on a spring is given by the equation x = (12.4 cm) cos[(6.35 s-1)t]. To find the value of t when the cart is first located at x = 8.47 cm, we can set the equation equal to 8.47 cm:

8.47 cm = (12.4 cm) cos[(6.35 s-1)t]

Now, we need to solve for t:

(8.47 cm) / (12.4 cm) = cos[(6.35 s-1)t]
0.6831 = cos[(6.35 s-1)t]

Next, take the inverse cosine (arccos) of both sides:

t = arccos(0.6831) / (6.35 s-1)

Calculating the value of t, we get:

t ≈ 0.3069 s

So, the cart is first located at x = 8.47 cm after approximately t = 0.3069 seconds.

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Answer:

\(\boxed{Work \: done = 400 \: N-m}\)

Explanation:

Force = 20 N

Displacement =20 m

Work Done = Force × Displacement

                   = 20 × 20

                   = 400 N-m

A lunar eclipse occurs when the Moon moves into the Earth's shadow. This can occur only when the Sun, Earth, and Moon are exactly or very closely aligned (in syzygy) with Earth between the other two, and only on the night of a full moon.

Answer:

when mass will increase then kinetic energy will also increase because both have positive relationship

Explanation:

when volume increase then molecule come closer then more movement will occurs and kinetic energy increase