Make t1 subject formula

The speed of the sound wave after the flash was seen, in the experiment for measuring the speed of sound gun is 110 m/s.

The speed of the sound wave can be determined by applying the principle of echoe as shown below;

v = 2d/t

where;

v = (2 x 715) / (13)

v = 110 m/s

Thus, the speed of the sound wave after the flash was seen, in the experiment for measuring the speed of sound gun is 110 m/s.

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Answer:

K.E. = 1/2mv^2

Explanation:

v is velocity (a vector) not speed (a scalar) but they have the same magnitude

The rate of change of the boulder's momentum is equal to the rate of change of the pebble's momentum. with force acting of 200 N.


1. According to Newton's second law, Force (F) = mass (m) × acceleration (a).
2. Rearrange the equation to find acceleration: a = F/m.
3. Both the boulder and the pebble experience the same force (F = 200 N).
4. The mass of the boulder is 100 kg, and the mass of the pebble is 0.13 kg (130 g = 130/1000 kg).
5. Calculate the acceleration for both objects: a_boulder = 200 N/100 kg = 2 m/s²,

a_pebble = 200 N/0.13 kg = 1538.46 m/s².
6. Momentum is given by the equation: momentum (p) = mass × velocity (v).
7. The rate of change of momentum is the derivative of momentum with respect to time: dp/dt = m × dv/dt = m × a.
8. Calculate the rate of change of momentum for both objects:

dp/dt_boulder = 100 kg × 2 m/s² = 200 kg m/s², dp/dt_pebble = 0.13 kg × 1538.46 m/s² = 200 kg m/s².

So, the rate of change of the boulder's momentum is equal to the rate of change of the pebble's momentum (c.equal to).

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This electric force calculator will enable you to determine the repulsive or attractive force between two static charged particles. Continue reading to get a better understanding of Coulomb's law, the conditions of its validity, and the physical interpretation of the obtained result.

How to use Coulomb's law

Coulomb's law, otherwise known as Coulomb's inverse-square law, describes the electrostatic force acting between two charges. The force acts along the shortest line that joins the charges. It is repulsive if both charges have the same sign and attractive if they have opposite signs.

Coulomb's law is formulated as follows:

F = keq₁q₂/r²

where:

F is the electrostatic force between charges (in Newtons),

q₁ is the magnitude of the first charge (in Coulombs),

q₂ is the magnitude of the second charge (in Coulombs),

r is the shortest distance between the charges (in m),

ke is the Coulomb's constant. It is equal to 8.98755 × 10⁹ N·m²/C². This value is already embedded in the calculator - you don't have to remember it :)

Simply input any three values

Answer:

Joule

Explanation:

energy, work, quantity of heat

m2·kg·s-2

To determine the quantum numbers of the helium ion's initial and final states, we need to consider the energy levels and transitions involved. The helium ion He+ consists of a single electron orbiting a helium nucleus with a charge of +2.

Since it is an ion, one electron has been removed from the neutral helium atom.
When the helium ion emits an ultraviolet photon, it undergoes a transition from an excited state to a lower energy state. The energy difference between the initial and final states corresponds to the energy of the emitted photon.
In the quantum mechanical description of atoms, the principal quantum number (n) represents the energy level of the electron. The initial state of the helium ion will have a higher principal quantum number than the final state.
Since helium has two electrons, the initial state of the helium ion could be represented by (n1, ℓ1, m1), where n1 represents the principal quantum number, ℓ1 represents the azimuthal quantum number, and m1 represents the magnetic quantum number of the first electron.
The final state of the helium ion, after emitting the photon, could be represented by (n2, ℓ2, m2), where n2, ℓ2, and m2 are the respective quantum numbers of the remaining electron.
Without specific information about the exact transition and energy levels involved, it is not possible to determine the specific quantum numbers of the initial and final states. The quantum numbers would depend on the specific energy difference and the corresponding transition between the energy levels of the helium ion.

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According to the question the net force on particle q1 is \(1.45 * 10^-4 N.\)

Force is an influence that produces a change in the motion, direction, shape, or orientation of an object. It is a vector quantity, meaning it has both magnitude and direction. Force can be derived from different sources, including physical contact, gravity, magnetism, or even electrical fields. Force affects objects by producing acceleration, deceleration, or changes in direction.

The net force on particle q1 is the sum of the forces due to the two other particles. The force on particle q1 due to particle q2 is given by Coulomb's Law:

\(F12 = k(q1q2/r12^2)\)

Where k is the Coulomb's Constant, q1 and q2 are the charges of the two particles, and r12 is the distance between them, which is 0.220m.

Similarly, the force on particle q1 due to particle q3 is given by:

\(F13 = k(q1q3/r13^2)\)

Where q1 and q3 are the charges of the two particles, and r13 is the distance between them, which is 0.330m.

The net force on particle q1 is then the vector sum of these two forces:

Fnet = F12 + F13

Substituting the values for the charges and distances into Coulomb's Law gives:

\(Fnet = (9*10^9)(-(8.99*10^-6)(5.16*10^-6)/(0.22^2)) + (9*10^9)(-(8.99*10^-6)(-89.9*10^-6)/(0.33^2))\)

Simplifying, we get

\(Fnet = 1.45 * 10^-4 N\)

Therefore, the net force on particle q1 is\(1.45 * 10^-4 N.\)

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The horsepower rating of an 85-watt light bulb is approximately 0.1139 horsepower.

One British horsepower 550 ft · lb/s is equal to 746 W.

The horsepower rating of an 85 W light bulb can be calculated using the given information.

The power rating of a lightbulb is given in watts, and one watt is equivalent to 1/746 horsepower.

Therefore, to calculate the horsepower rating of an 85-watt light bulb, we can use the following formula:

Horsepower rating = Power rating in watts / 746 horsepower1 horsepower = 550 ft · lb/s

Hence,Horsepower rating = 85 W / 746 horsepower= 0.1139 horsepower

Therefore, the horsepower rating of an 85-watt light bulb is approximately 0.1139 horsepower.

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By examining the influence of surface area and material composition on thermal energy transfer in a controlled experiment, we can gain valuable insights into the fundamental factors that affect heat exchange. This knowledge can have practical applications in fields such as engineering, materials science, and energy efficiency.

A good question about the variables that affect thermal energy transfer in a controlled experiment could be: How does the surface area and material composition of an object influence the rate of thermal energy transfer?

By focusing on the surface area and material composition, we can investigate how these two variables affect the transfer of thermal energy. The surface area of an object determines the amount of area available for heat exchange, potentially affecting the rate of energy transfer. The material composition, on the other hand, can impact factors such as thermal conductivity, specific heat capacity, and emissivity, all of which play a role in how effectively heat is transferred.

To conduct the experiment, you can select objects of different materials and surface areas, such as metal plates or plastic blocks with varying dimensions. By exposing them to a controlled heat source and measuring the temperature change over time, you can analyze how the chosen variables affect thermal energy transfer.

This investigation would provide insights into the fundamental factors that influence heat exchange and can be used to inform practical applications in various fields such as engineering, materials science, and energy efficiency.

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I think there's a typo in the question...

Vertically, the box is in equilibrium, so its weight and the normal force (magnitudes w and n, respectively) are such that

n + (-w) = 0

The box has mass 70 kg, and assuming gravitational acceleration with magnitude g = 9.80 m/s², it has a weight of

w = (70 kg) g = 686 N

and hence

n = 686 N

Horizontally, the box is accelerated 3.0 m/s², so the net force acting on it is

∑ F = (70 kg) (3.0 m/s²) = 210 N

and the only forces acting in this dimension are the pulling force with magnitude 130 N and the friction force with magnitude f so that

130 N - f = 210 N

The friction force is proportional to the normal force by a factor of µ, the coefficient of kinetic friction, so that

f = µ n

and so we have

130 N - µ (686 N) = 210 N   →   µ ≈ -0.117

but µ can't be negative!

The problem is that the pulling force should have a magnitude larger than that of the net force, so either the given mass, acceleration, or pulling force are incorrect.

Given,

u = 0.5 m/s

a=0.05 m/s²

and v=0

Now, v = u − at

=> 0 = 0.5−(0.05×t)

=> t = 10 s

after 10s it will stop

velocity after 5s is

v = 0.5-(0.05×5) = 0.25 m/s

Answer:

0.25 meter per second

Explanation:

I hope this helps and study well

Answer:

136Hz

0.0074s

Explanation:

Given parameters:

Velocity of the wave  = 340m/s

Wavelength  = 2.5m

Unknown:

Frequency and period  = ?

Solution:

To solve this problem, we use the wave velocity equation;

    V  = F ∧  

V is the velocity

F is the frequency

∧ is the wavelength

  Let us find the frequency

   340  = F x 2.5

        F  = 136Hz

Period is the inverse of frequency;

    Period = \(\frac{1}{136}\)   = 0.0074s

Answer: 13,24

Explanation:

Answer:

See the explanation below

Explanation:

The pressure is defined as the product of the density of the liquid by the gravitational acceleration by the height, and can be easily calculated by means of the following equation.

\(P=Ro*g*h\)

where:

Ro = density of the fluid [kg/m³]

g = gravity acceleration = 9.81 [m/s²]

h = elevation [m]

In this way we can understand that the greater pressure is achieved by means of the height of the liquid, that is, as long as the fluid has more height, greater pressure will be achieved at the bottom.

Therefore in order of decreasing will be

The largest pressure with the largest height of liquid, container B. The next is obtained with container D, the next with container A and the lowest pressure with container C.

The pressure decreases as we go from the container B - D - A - C

Answer

as it is given that 1hp=746W

100W=?hp

746hp=100W   (to find the value of hp we divide 100 on both sides)

746/100=hp

hp=7.46

The movement of a body part around a central point or axis is known as rotation.

Rotation refers to the circular movement of a body part around its axis or a fixed point. It involves the turning or twisting motion of a body segment without changing its position in space.

Flexion (a) is the movement that decreases the angle between two body parts, typically bending or decreasing the joint angle. The extension (b) is the opposite movement, increasing the angle between two body parts, typically straightening or increasing the joint angle. Abduction (d) refers to the movement of a body part away from the midline of the body.

During rotation, the body part or segment moves around an imaginary line called the axis. This axis can be within the body itself or located externally. For example, when we rotate our head from side to side, the axis of rotation is an imaginary line passing through the neck.

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The prize wheel will land on either 20 or 19 or 18 with angular displacement θ = 36.05 of spinning the prize feel.

From the given,

Initially, the prize feel is at 19.

The wheel is spinning with the energy (KE) = 9.93 J

The angular acceleration of the wheel = -1.900 rad/s²

The density of the wood (ρ) = 528 kg/m³

The thickness of the wood (t) = 40 mm = 0.04 m

The radius of  the wood (r) = 31 cm = 0.31 m

angular displacement (θ) =?

To find angular displacement, angular velocity (ω) can be determined from the given.

The Inertia of the wheel,

I = mr² / 2, m is mass and r is the radius of the circle.

m = ρ×V, ρ is the density of the wheel

V is the volume, V = πr²d

Inertia (I) = mr² / 2

              = ρ(πr²d) r² / 2

             = (528×π×(0.31)⁴×(0.04)) / 2

Inertia (I)  = 0.3062

K.E = 1/2 (Iω²)

9.93 =  1/2 (0.3062×ω²)

ω² = 9.93 / 0.1531

ω = √64.85

  = 8.05

The angular velocity, ω = 8.05 rad/s

To find the angular displacement (θ)

θ =θο + ωοt + (1/2(αt))

To find time, t

ω = ωο + αt

t = ω-ωο / α  (final angular velocity ω= 0)

 = -8.05 / (-1.9)

 = 4.237s

time taken to spin the wheel, t = 4.237 s

θ =θο + ωοt + (1/2(αt))

  = 19 + (8.05 × 4.237) + (1/2 (-1.9×(4.236)²)

 =  19 + 34.10 - 17.05

θ = 36.05

The angular displacement of the wheen θ= 36.05 radians before the wheel coming to stop.

To find the number(n) in which the wheel stops, the number of degrees per number on the wheel is to be identified. The wheel has 36 numbers and each number has 10 degrees.

The angular displacement θ = 36.05 radians is equivalent to 2065.5 degrees. Dividing by 10. we get 206.5, which means the wheel is stopped between either 20 or 18, or 19.

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Answer:

Food provides energy for physical activity

Explanation:

As you get more active and more fit, and/or as you lose weight, your energy needs (how many calories you need) may change. To get the energy you require, you need to get the proper amount of: Protein, which is needed to maintain and rebuild tissues such as muscles.

Pls give brainiest

She travelled in one third of time=160km

Total distance=160×3=480km

Time=6h

\(\\ \bull\tt\dashrightarrow Velocity=\dfrac{Displacement}{Time}\)

\(\\ \bull\tt\dashrightarrow Velocity=\dfrac{480}{6}\)

\(\\ \bull\tt\dashrightarrow Velocity=80km/h\)

Answer: 160km

Explanation:

Answer:kinetic

Explanation:

Answer:

Forces, Gravity, Friction, Direction, Acceleration.

The answers for the fill-in-the-blanks would be  Force, gravity friction

direction and acceleration respectively.

It can be defined as the force by which a body attracts another body towards its center as the result of the gravitational pull of one body and another,

There are a few ways that moving objects are impacted. Pushes and pulls, or force, have an impact on how an object moves.

The force of gravity drags items toward the Earth.

Friction is a force that causes objects to move more slowly or even come to a stop.

It also applies to an item that is reversing course or slowing down. Since acceleration is a change in velocity, it can also be a change in speed or direction.

Thus, Force, gravity friction direction, and acceleration are the answers respectively.

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If the observed variation in flux is due to a variation in the intrinsic luminosity of the quasar, what was the variation timescale at the time the light was emitted will be found and Rmax is equals to 1.3*10^15 cm.

In particle physics experiments the energy available for the production of new effects is the most important parameter. The required large centre of mass energy can only be provided with colliding beams where little or no energy is lost in the motion of the centre of mass system (cms).

Besides the energy the number of useful interactions (events), is important. This is especially true when rare events with a small production cross section σp are studied.

The quantity that measures the ability of a particle accelerator to produce the required number of interactions is called the luminosity and is the proportionality factor between the number of events per second dR/dt and the cross section σp.

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Answer:

v = 3.57 m / s

Explanation:

Let's use Newton's second law in the upper part of the circle, with the minimum speed so that the water does not rest on the circle, that is, the normal is zero

          W = m a

acceleration is centripetal

          a = v² / r

let's substitute

         mg = m v² / r

         v = \(\sqrt{r g }\)

let's calculate

        v = \(\sqrt{1.3 \ 9.8}\)ra 1.3 9.8

        v = 3.57 m / s

Fertility fraud is a deceptive act that involves medical professionals using their own sperm or someone else's without the patient's consent during fertility treatments.

It is a violation of trust and a grave breach of ethical standards that can have significant emotional and psychological consequences for those who experience it.

Individuals and couples who undergo fertility treatments often do so with the hope and expectation of having a child. Fertility fraud can shatter that hope, leaving individuals feeling violated, betrayed, and devastated. The emotional pain and trauma that follow can be long-lasting, and can impact their personal relationships and mental health.

The desire to become a parent is a fundamental human need and is often accompanied by feelings of loss, grief, and despair when fertility treatments fail. The emotional burden of fertility fraud compounds these feelings, leading to an indescribable sense of betrayal and a loss of trust in the medical system.

It is important to acknowledge and support those who have experienced fertility fraud, and to advocate for legal and ethical standards that prioritize patient autonomy, informed consent, and transparency in all aspects of fertility treatments

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Answer:

The equivalent resistance of the combination is R/100

Explanation:

Parallel Connection of Resistances

If resistances R1, R2, R3,...., Rn are connected in parallel, the equivalent resistance is calculated as follows:

\(\displaystyle \frac{1}{R_e}=\frac{1}{R_1}+\frac{1}{R_2}+\frac{1}{R_3}+...+\frac{1}{R_n}\)

The electric resistance of a wire is directly proportional to its length. If a wire of resistance R is cut into 10 equal parts, then each part has a resistance of R/10.

It's known the 10 parts or resistance R/10 were connected in parallel, thus the electric resistance is:

\(\displaystyle \frac{1}{R_e}=\frac{1}{R/10}+\frac{1}{R/10}+\frac{1}{R/10}+...+\frac{1}{R/10}\)

Note the sum consists of 10 equal terms. Operating on each term:

\(\displaystyle \frac{1}{R_e}=\frac{10}{R}+\frac{10}{R}+\frac{10}{R}+...+\frac{10}{R}\)

The sum of 10 identical fractions yields 10 times each fraction:

\(\displaystyle \frac{1}{R_e}=10\frac{10}{R}=\frac{100}{R}\)

Solving for Re needs to take the reciprocal of both sides of the equation:

\(R_e=R/100\)

The equivalent resistance of the combination is R/100

Distance covered while flying in north-east direction = 20.0 km

Distance covered while traveling in the east direction = 30.0 km

Distance covered while traveling in the north direction = 10.0 km

According to the figure,

Distance traveling from B to C,

tan 60° = BC / 20

BC = 20√3

Using Pythagoras' theorem,

Distance covered from A to C,

AC² = AB² + BC²

AC² = 40² + (40√3)²

AC² = 1600 + 4800

AC = √6400

AC = 80.0 km

Similarly, the Distance covered from C to E

CE² = CD² + DE²

CE² = 30² + 10²

CE² = 900 + 100

CE = √1000

CE = 10√10 km

Total distance covered from starting point

= 80 + 10√10

= 80 + 30.16

= 110.16 km

Answer: The force of gravity