Oxygen-15 undergoes beta decay. Which particle correctly completes the
equation to show that the numbers of nucleons on the two sides of the
equation are equal?
150 - 15N+2

Answer:

255 m/s

Explanation:

From the question,

F = ma.................................. Equation 1

Where F = Force, m = mass, a = acceleration.

Make a the subject of the equation

a = F/m............................. Equation 2

Given: F = 100 Newton, m = 4 kg.

Substitute these values into equation 2

a = 100/4

a = 25 m/s²

But,

a = (v-u)/t...................... Equation 3

Where, v = Final velocity, u = initial velocity, t =  time

Given: u = 5 m/s, t = 10 s

Substitute into equation 3

25 = (v-5)/10

v-5 = 25×10

v-5 = 250

v = 250+5

v = 255 m/s

If the universe were to suddenly begin shrinking rather than continuing to expand, it would have a significant effect on the cosmic microwave background radiation (CMB).

The CMB is the afterglow of the Big Bang and is observed as a nearly uniform background radiation in all directions. It is thought to have been emitted when the universe was about 380,000 years old and had cooled enough for neutral atoms to form.

If the universe were to suddenly begin shrinking, the photons in the CMB would lose energy as they travel through the contracting space. This would cause the CMB radiation to shift to shorter wavelengths, which is known as blue-shifting.

Therefore, the correct answer is B. It would blue-shift.

Answer:

Explanation:

By the speed addition theorem:

V = 20 - 5 = 15 km/h

1) The time taken is  6.37 s

2) The velocity at maximum height is 0 m/s

3) The initial velocity is 62.4 m/s.

4) The maximum height is  198.66 m

Let us recall that in this case, we have to use the equation of the motion that occurs under gravity In this case we have to take into account the the upwards motion is negative in the opposite direction as gravity and the down wards motion is positive and in the same direction as gravity.

1) Given that;

time is the same as the time taken to go up and come down thus the time taken to reach the maximum height is 12.74 seconds/2 = 6.37 s

2) The velocity of the rocket at the maximum height is zero because it momentarily comes to rest.

3) The initial velocity of the rocket is;

v = u - gt

At the maximum height v = 0 m/s

u = gt

u = 9.8 m/s^2 *  6.37 s

u = 62.4 m/s

4) The maximum height is obtained from;

v^2 = u^2 - 2gh

v = 0 m/s

u^2 = 2gh

h = u^2/2g

h = (62.4 m/s)^2/2 * 9.8 m/s^2

h = 198.66 m

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The apparatus used to measure the mass of a wooden block is called a weighing scale or a balance.

A weighing scale is a device that quantifies the force of gravity acting on an object, providing a measurement of its mass. There are various types of weighing scales available, ranging from simple mechanical balances to more sophisticated electronic scales.

A typical weighing scale consists of a platform or pan where the wooden block is placed. This platform is connected to a spring or a load cell that experiences a deflection proportional to the mass placed on it.

The deflection is then converted into an electrical signal, which is further processed and displayed as the measured mass on a digital or analog display.

When measuring the mass of a wooden block, it is important to place the block on the center of the platform to ensure accurate results. Additionally, any containers or materials used to hold the wooden block should be weighed separately and their mass subtracted from the total measurement to obtain the mass of the block alone.

Weighing scales are widely used in laboratories, industries, and everyday life for precise mass measurements of various objects, including wooden blocks, ensuring accuracy in research, manufacturing, and commerce.

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I Think Its Real

A wide range of empirical evidence strongly favors the Big Bang event, which is now essentially universally accepted. Detailed measurements of the expansion rate of the universe place the Big Bang singularity at an estimated 13.787±0.020 billion years ago, which is considered the age of the universe.

Explanation:

The mistakes in the results include options (v) and (vii) which do not follow the five golden rules for reporting results.

The five golden rules for reporting results are:

Using these rules, identify the mistakes in the given results as:

(v) 97.1 × 10³ ± 276Ω - The uncertainty is reported to an inappropriate number of significant figures and the units are not consistent.

(vii) 98.6 × 10³ ± 3 × 10^(-Q) - The uncertainty is not reported to the same number of decimal places as the measured value, and the units are not consistent.

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Answer:

The bass has the lowest frequency ,it only causes vibrations but at a lower frequency

Answer:

A cylindrical specimen of aluminum having a diameter of 0.505 in. (12.8 mm) and a gauge length of 2.0 in. (50.8 mm) is pulled in tension. Use the load-elongation characteristics tabulated below to complete parts (a) through (f).

Answer:

35.42kg m^2 s−1

Explanation:

Step one:

the expression for angular momentum is given as

\(L = mvr\)

m = mass  = 1.8kg

v = velocity  = 12.3m/s

r = radius= 1.6m,

Required

L = angular momentum

Step two:

substitute into the expression

L=1.8*12.3*1.6

L=35.42kg m^2 s−1

Can Soccer be traced back to the early Greeks and Romans

Answer:

O False,

Explanation:

Although the game of soccer has been around for more than 2,000 years, soccer as we know it today is traced back to England. The game was once played in ancient China, Greece, Rome, and Japan but with different rules and variations.

Answer:

Ionic charges refer to the electrical charges of ions, which are atoms or molecules that have gained or lost electrons. These charges result from the loss or gain of electrons during chemical reactions.

When an atom loses one or more electrons, it becomes a positively charged ion known as a cation. The cation carries a positive charge equal to the number of electrons lost.

Conversely, when an atom gains one or more electrons, it becomes a negatively charged ion known as an anion. The anion carries a negative charge equal to the number of electrons gained.

The magnitude of the ionic charge depends on the number of electrons gained or lost, which is determined by the element's position in the periodic table and its electron configuration. For example, sodium (Na) loses one electron to become a +1 charged cation (Na+), while chlorine (Cl) gains one electron to become a -1 charged anion (Cl-).

Answer:

odometer

Explanation:

this tracks your total mileage it can also track trip mileage

Answer:

I am 15th in my state for 55m hurdles with a time of 10.4 seconds

Explanation:

BAM

Answer: 44 m per minute

Explanation:

Answer:

31.84

Explanation:

To find the magnitude of the sum of the three vectors, first, we need to add the vectors component-wise. Then, we can find the magnitude of the resulting vector.

Add the vectors component-wise:

Vector A + Vector B + Vector C = [13+13+0, 8+0+1, 0+8+8] = [26, 9, 16]

Find the magnitude of the resulting vector:

The magnitude of a vector [x, y, z] is given by the formula:

magnitude = sqrt(x^2 + y^2 + z^2)

Plugging in the values from the resulting vector:

magnitude = sqrt(26^2 + 9^2 + 16^2)

magnitude = sqrt(676 + 81 + 256)

magnitude = sqrt(1013)

magnitude ≈ 31.84

The magnitude of the sum of the three vectors is approximately 31.84.

Hope this helps!

Answer:

Explanation:

The potential difference required to maintain the equilibrium of a charged oil drop in a uniform electric field can be calculated using the following equation:

V = (mg)/(qE)

where V is the potential difference, m is the mass of the oil drop, g is the acceleration due to gravity, q is the charge on the oil drop, and E is the electric field strength.

We are given the mass of the oil drop (m = 1.31x10^-14 kg), the charge on the oil drop (q = 6.4x10^-19 C), and the separation between the plates (d = 10 mm = 0.01 m).

The electric field strength between two parallel plates separated by a distance d and with a potential difference V applied between them is given by:

E = V/d

Substituting this expression for E into the equation for V, we get:

V = (mg)/(qE) = (mgd)/(qV)

Rearranging this equation, we obtain:

V^2 = (mgd)/q

Substituting the given values, we get:

V^2 = [(1.31x10^-14 kg)(9.81 m/s^2)(0.01 m)]/(6.4x10^-19 C)

V^2 = 2.02x10^-5 V^2

Taking the square root of both sides, we obtain:

V = 0.0045 V

Therefore, the potential difference required to maintain the equilibrium of the charged oil drop is approximately 0.0045 volts.

Answer:

The value  is \(v_a = 0.489 \ m/s\)    

Explanation:

From the question we are told that

    The mass of the spacesuit plus astronaut is  \(m = 191 \ kg\)

     The average speed of air molecules is  \(v = 549 \ m/s\)

     The density of air molecule is  \(\rho = 1.05 \ kg / m^3\)

      The acceleration of the air from Whatney's suit  is  \(a = 0.020 \ m/s^2\)

      The time considered is \(t = 8.1 \ s\)

Generally the mass of air that have left Whatney's suit after the time considered is mathematically represented as

        \(M = a * \rho * t\)

=>     \(M = 0020 * 1.05 * 8.1\)

=>      \(M = 0.1701 \ kg\)

Generally the momentum of the escaped air is  

           \(p = M * v\)

=>         \(p = 0.1710 * 549\)

=>         \(p = 93.38 \ kg \cdot m/s\)

Generally from the law of momentum conservation

           \(p = p_a\)

Here \(p_a\) is the momentum of the astronaut at the considered time  

          \(93.38 = m * v_a\)

Here \(v_a\)  is the velocity of the astronaut at the considered time  

=>      \(93.38 = 191 * v_a\)

=>       \(v_a = 0.489 \ m/s\)  

Answer:

cswqwqqddqd

Explanation:

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Answer:

tyyyyy ..

Explanation:

The change in motion, visible effects of the collision, and temperature increase would all serve as evidence that energy was transferred during the collision between the cart and the track after the removal of electrostatic forces.

If the electrostatic forces on the cart and track were suddenly removed and the cart hits the track, there would be several pieces of evidence indicating that energy was transferred during the collision.Firstly, there would be a noticeable change in the motion of the cart. The cart would decelerate as it collides with the track, and its velocity would decrease due to the loss of energy. This change in motion demonstrates that energy has been transferred from the cart to the track.

Secondly, there may be visible effects of the collision, such as deformation or damage to the cart or the track. This deformation or damage occurs because the energy transferred during the collision is transformed into other forms, such as heat or sound energy. These visible effects provide evidence of energy transfer.Additionally, there could be an increase in the temperature of the cart and/or the track due to the conversion of kinetic energy into thermal energy upon impact. This temperature change would be another indication that energy has been transferred.

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Answer:

a)   a = 34.375 m / s²,  b)    v_f = 550 m / s

Explanation:

This problem is the launch of projectiles, they tell us to ignore the effect of the friction force.

a) Let's start with the final part of the movement, which is carried out from t= 16 s with constant speed

             v_f = \(\frac{x-x_1}{t}\)

we substitute the values

             v_f = \(\frac{ 6600 -x_1}{4}\)  

The initial part of the movement is carried out with acceleration

             v_f = v₀ + a t

             x₁ = x₀ + v₀ t + ½ a t²

the rocket starts from rest v₀ = 0 with an initial height x₀ = 0

             x₁ = ½ a t²

             v_f = a t

we substitute the values

              x₁ = 1/2  a 16²

              x₁ = 128 a

              v_f = 16 a

let's write our system of equations  

               v_f = \(\frac{6600 - x_1}{4}\)

               x₁ = 128 a

               v_f = 16 a

we substitute in the first equation  

               16 a = \(\frac{6600 -128 a}{4}\)

               16 4 a = 6600 - 128 a

                a (64 + 128) = 6600

                a = 6600/192

                 a = 34.375 m / s²

b) let's find the time to reach this height

                x = ½ to t²

                t² = 2y / a

                t² = 2 5100 / 34.375

                t² = 296.72

                t = 17.2 s

We can see that for this time the acceleration is zero, so the rocket is in the constant velocity part

               v_f = 16 a

               v_f = 16 34.375

               v_f = 550 m / s

Explanation:

180 million km = 10 min

? = 1 min

180 million x 10 = 1,800,000,000 km

180 million km = 600s

? = l s

108,000,000,000km

Answer:

Acceleration /Speed

Explanation:

An objects Velocity can be determined by acceleration,

Please pay attention in your middle school class, speed and velocity quiz.

The distance the ball was thrown is 52.22m by A quarterback throws a pass at an angle of 35° above the horizontal with an initial speed of 25 m/s. The ball is caught by the receiver 2.55 seconds later.

Every motion under constant acceleration is projectile motion

Angle above horizontal Ф = 35°, initial speed v1 = 25m/s , time 2.55s

Substituting value in the below equation

x=x₁ + (v₁*cosθ)(t)+1/2 *a*t²

a= 0 as acceleration in horizontal direction is zero

x= 25*cos(35)*2.55

x=52.22 m

Projectile motion is a form of motion in which object influenced when it is launched into the gravitational force from the surface of Earth along a curved path.

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For the graph of Annual cray fish caught in Lambert Bay for the last 20 years, the axes are as follows:

Y-axis: amount of fish caught

X-axis: year

A graph is a pictorial illustration of data.

There are different types of graphs such as

A graph has the vertical axis, known as the Y-axis, and the horizontal axis known as the X-axis.

For the graph of Annual cray fish caught in Lambert Bay for the last 20 years, the axis can be labelled as follows:

Y-axis: amount of fish caught

X-axis : year

In conclusion, in a graph, the vertical axis is known as the Y-axis while  the horizontal axis is known as the X-axis.

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D: Sóng có thể truyền qua khoảng không của không gian,

với tốc độ ánh sáng.

Answer:

UMMMMMMMMMMMMMMM ]

Explanation:

WHAT

Answer:

dang, he should go see a doctor

Answer:

20 km/h

Explanation:

45 km ÷ 2.25 hours (15 mins is 0.25 hours)

= 20

20 km/h

To draw the displacement vector diagram, we start at point A and draw a vector from A to B, representing the athlete's displacement of 120 m South. We then draw a vector from the end of the first vector (B) to the end of the second vector (C), representing the athlete's displacement of 200 m East. Finally, we draw a vector from the end of the second vector (C) to point D, representing the athlete's displacement of 270 m North. The diagram should form a closed triangle.

To find the resultant displacement of the athlete, we can use the Pythagorean theorem and trigonometry. Let's call the displacement from A to B "vector AB," the displacement from B to C "vector BC," and the displacement from C to D "vector CD." The magnitude of the resultant displacement (R) is given by:

R = √(AB² + BC² + CD²)

R = √(120² + 200² + 270²) = 334.4 m (rounded to one decimal place)

To find the direction of the resultant displacement, we can use trigonometry. We can find the angle between the resultant displacement and the North direction using the following formula:

θ = tan⁻¹[(ΣN)/(ΣE)]

Where ΣN is the sum of the Northward components of the displacement vectors (in this case, CD), and ΣE is the sum of the Eastward components of the displacement vectors (in this case, BC).

θ = tan⁻¹[(270 m)/(200 m)] = 53.1° (rounded to one decimal place)

Therefore, the magnitude of the resultant displacement is 334.4 m and the direction of the resultant displacement is 53.1° North of East.

From the retina to the brain, structures in the visual pathway relay visual information.

Structures in the visual pathway transmit visual data from the retina to the brain. Many abnormalities of the visual field are brought on by lesions in that pathway.

Beginning with the retina, whose ganglion cell axons comprise the optic nerve, the basic visual pathway is made up of a relay system. The nasal fibers of the contralateral nerve join the temporal fibers of the opposite nerve as the optic nerve fibers from each eye hemidecussate in the optic chiasm (OC).

A visual feeling is conveyed from the retina to the brain along the visual pathway. This consists of a cornea, a lens, nerve fibers that transmit visual perceptions from the retina to the optic nerve, and a lens and cornea that focus images on the retina.

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