which nuclear decay emission consists of energy only?

Using Newton's second law

\(\\ \sf\Rrightarrow F=ma\)

\(\\ \sf\Rrightarrow F=142(30)\)

\(\\ \sf\Rrightarrow F=4260N\)

Answer: The answer is A

Explanation:

They let him in his tribe and they became good friends.

Therefore, the answer to this question is that it cannot be determined without more information.

The answer to this question can be determined by comparing the velocity of the two objects.

The formula for momentum is:

We can rearrange this formula to solve for velocity:

We can plug in the given values:

For the other object, we do not have enough information to determine its velocity. We would need to know its mass and momentum in order to calculate its velocity and compare it to the horse's velocity. Without this information, we cannot determine which object is moving faster. Therefore, the answer to this question is that it cannot be determined without more information.

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Answer:

C.

Explanation:

c. the source is written by the person who conducted the experiment. A primary source is an original piece of information created at the time under study. It can be a diary, a letter, a photograph, a recording, or any other type of artifact. It provides firsthand information about an event or topic, and is created by a person who was directly involved or witnessed it.

The speed of the Earth's rotation affects the length of a day, which in turn influences various aspects of life, including the distribution of sunlight, temperature patterns, and the overall dynamics of ecosystems.

To calculate the speed of the Earth's rotation 155 million years ago, we need to consider the rate at which the Earth's rotation is slowing down. According to the given information, the Earth slows down 1/30000 of a minute every 100 years.

Let's first calculate the change in the Earth's rotation speed over 155 million years:

Change in rotation speed = (1/30000 minute/100 years) * (155 million years)

Now we can calculate the speed of the Earth's rotation at that time:

Current rotation speed - Change in rotation speed

Given that the current rotation speed is 1670 kilometers/hour, we can substitute the values and calculate:

Rotation speed at that time = 1670 km/hour - (Change in rotation speed)

Once we have determined the rotation speed at that time, we can assess its potential impact on the movement of dinosaurs or mankind.

A change in the rotation speed could have implications for the behavior, adaptation, and survival of living organisms, including dinosaurs and early humans.

However, it is important to note that the exact magnitude and direct consequences of changes in rotation speed on specific species and their movements would require a more detailed analysis and consideration of various ecological factors.

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Answer:

To find the Voltage, ( V ) [ V = I x R ] V (volts) = I (amps) x R (Ω)

To find the Current, ( I ) [ I = V ÷ R ] I (amps) = V (volts) ÷ R (Ω)

To find the Resistance, ( R ) [ R = V ÷ I ] R (Ω) = V (volts) ÷ I (amps)

To find the Power (P) [ P = V x I ] P (watts) = V (volts) x I (amps)

Explanation:

good price

Answer:

what is it

Explanation:

The image distance i  is - 8.6 cm and  the lateral magnification m of the object, including signs is +0.39  .

For a diverging (D) lens we know that the focal length value should be negative ( f=–14cm).

1. The image distance :

i = \(\frac{pf}{p-f}\)

∴ i = [22 × (-14)] / [22 -(-14) ]

∴ i = -8.6 cm

​2. The magnification :

m = - i / p

∴ m = - (-8.6 / 22)

∴ m = +0.39

3.The image distance being a negative number indicates that the image is virtual (V).

4.A positive magnification value indicates that the image is not reversed (NI).

5.The image is on the same side of the object as the object.

6. This problem's ray diagram is similar to the one depicted in Figure. The lens is diverging, creating a virtual image with the same orientation as the object and on the same side.

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Answer:

1 / f = 1 / i + 1 / o             1 / f = (o + i) / i o

f = i o / (o + i)

f = -26.5 * 8.25 / (8.25 - 26.8)

f = -221 / -.308 = 11.8 cm

The following kinematic equation will be most useful for finding the ball’s initial velocity:

v = u + at

There are three kinematic equations, out of which any one equation can be used according to the given situation. These are:

In the above situation, a ball is rolled from the top of a table and the ball lands on the ground after 3 seconds with a final velocity of 3.5 m/s.

We have been provided by the final velocity, acceleration, and time taken by the ball, so the equation that would be most useful for finding the initial velocity will be, v =u +at.

Thus, the following kinematic equation will be most useful for finding the ball’s initial velocity:

v = u + at

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Answer:

i am the best star ever

Explanation:

The entropy changes of 0.20 mol of potassium when its temperature is lowered from 3.8 K to 1.2 K is given by -48.3 J/K.

The entropy change, ΔS, can be determined using the equation:

ΔS = ∫(Cp/T)dT

where Cp is the molar heat capacity at constant pressure and T is the temperature. To solve the integral, we need to know the temperature dependence of Cp for potassium. Assuming Cp is constant over the given temperature range, we can simplify the equation as follows:

ΔS = Cp∫(1/T)dT

Integrating with respect to T, we have:

ΔS = Cp[ln(T)]₂₃.₈¹.₂ = Cp[ln(1.2) - ln(3.8)]

Since we have 0.20 mol of potassium, we need to multiply the above result by the molar quantity:

ΔS = 0.20 mol × Cp[ln(1.2) - ln(3.8)]

Therefore, the entropy changes of 0.20 mol of potassium as its temperature decreases from 3.8 K to 1.2 K is -48.3 J/K.

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Explanation:

A)   PV = n RT    

  2*  ( 1)  =  .5 (.082057)(T)       T is in Kelvin

    T = 48.7 K

B) PV = nRT

  3 *  V = 4 ( .082057)(200)

          V = 21.88 Liters

C) PV = nRT

   3.5 (5) = n (.082057)(275)    n = .776 moles

The force constant is 2.145 N/m.

Using the relation;

T = 2π√m/k

T = time period = 0.45 s

m =  mass of object in kilograms = 0.011kg

k = spring constant

To find k based on the formula,

k = 4 × (3.142)^2 × 0.011 / (0.45 )^2

k = 2.145 N/m

Therefore the force constant is 2.145 N/m.

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Given that, 1 Liter equals 1.0567 quartz and 1 quartz equals 32 oz, the volume 1.00 oz equals 0.02957 L.

Given that;

First, we convert 1.00 oz to qt

32 oz = 1 qt

1.00 oz = x

x = 1.00 / 32

x = 0.03125 qt

Now, we convert 0.03125 qt to liter

1.0567 qt = 1 L

0.03125 qt = x

x = 0.03125 / 1.0567

x = 0.02957 L

Given that, 1 Liter equals 1.0567 quartz and 1 quartz equals 32 oz, the volume 1.00 oz equals 0.02957 L.

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Answer:

if we drop it and not throw it then

after 0.75 how fast the book is falling is given by its velocity as

v= at

= 9.8 × 0.75

=7.35 m/s

Answer:

Dude this is based on some egg you have

Explanation:

Answer:

the number of protons.

Explanation:

the atomic number is the number of protons in the nucleus of an atom. the number of protons Define the identity of an element.

The air column is 22 cm long when the tube is held vertically with the closed end at the bottom; however, when it is held horizontally, the air column is 26 cm long. 101.6 kPa is the atmospheric pressure.

The mercury thread's two tiers are separated in height by 26.4 - 15.5 = 10.9 cm. The pressure difference between the atmospheric pressure and the pressure of the trapped air column is corresponding to this height difference. We may calculate the atmospheric pressure by equating the pressure difference with the height difference using the equation P = gh, where P is pressure, is density, g is acceleration due to gravity, and h is height.

Calculations: Vertical air column pressure is given by P = gh.

P = (9.81 m/s2) * (1.29 kg/m3) * (0.22 m)

P = 0.28 kPa

Air column pressure while horizontal: P = gh P = (1.29 kg/m3) * (9.81 m/s2) * (0.264 m)

P = 0.33 kPa

Difference in pressure: 0.33 kPa - 0.28 kPa = 0.05 kPa

Atmospheric pressure = 0.05 kPa + 101.3 kPa (standard atmospheric pressure) = 101.6 kPa.

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Answer:

Answer is a wave with the longest wavelength.

Explanation:

I hope it's helpful!

Answer:

1. 4

2.0.625HZ

3.500

4. 428274940000000 or 4.2*10^14

5. 2

Explanation:

omnicalculator.com/physics/wavelength

Answer:

Difference = 1.83 hours

Explanation:

Let the two trips be A and B respectively.

Given the following data;

Distance A = 2000 miles

Speed A = 400 miles

Distance B = 2000 miles

Speed B = 480 miles per hour

To find the time spent;

a. For trip A.

Time A = distance A/speed A

Time A = 2000/400

Time A = 5 hours

b. For trip B.

Time B = distance B/speed B

Time B = 2000/480

Time B = 4.17 hours

Next, we would find the difference between the two trips.

Difference = Time A - Time B

Difference = 5 - 4.17

Difference = 1.83 hours

Therefore, the return trip was much quicker by 1.83 hours.

The return trip of the airplane will be quicker by 1.84 hours

It is given that

Distance covered by the plane D= 2000 miles

The average speed of the plane

 \(V_1=400\ \frac{Miles }{hour }\)

The Return Average speed of the plane

\(V_2= 480\ \frac{Miles}{hour}\)

Now we will first find the time taken by the airplane during the first visit.

\(V_1=\dfrac{Distance }{Time }\)

\(Time = \dfrac{Distance }{V_1}\)

Now by putting the values in the formula

\(T_1=\dfrac{2000}{400} =5\ hours\)

Now for the return trip time taken by the plane

\(T_2=\dfrac{Distance }{V_2}\)

\(T_2= \dfrac{2000}{480}\)

\(T_2= 4.16\ hours\)

Now the difference between the time will be

\(=T_1-T_2=5-4.16=0.86=1.84 \ Hours\)

Thus the return trip of the airplane will be quicker by 1.84 hours

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Each solution tested has its advantages and disadvantages. The most effective solution depends on the situation and the amount of oil that needs to be removed from the water.

The three solutions tested to remove oil from water are scooping the oil with a spoon, absorbing the oil with a paper towel, and using soap to break up the oil. Each solution has its advantages and disadvantages. Scooping the oil with a spoon is an effective solution to remove a significant amount of oil quickly. However, it is not a practical solution for removing a large amount of oil. The disadvantage is that it spreads the oil around the surface of the water and leaves some oil in the water. Absorbing the oil with a paper towel can effectively remove a lot of oil. The advantage is that it removes some oil from the water, leaving it relatively clean. However, it also picks up a lot of water and can't get all of the oil. Using soap to break up the oil is a good solution that removes all of the oil from the water. The advantage is that it removes all of the oil from the water, leaving it clean. However, the disadvantage is that it disperses the oil on the surface of the water, making it harder to remove from the sides of the bowl. In conclusion, each solution tested has its advantages and disadvantages. The most effective solution depends on the situation and the amount of oil that needs to be removed from the water.

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According to Positive Coaching Alliance (PCA), kids need the following elements to have a meaningful experience as an athlete: positive reinforcement, a supportive environment, skill development, and enjoyable participation.

These factors contribute to the overall development, enjoyment, and motivation of young athletes.

Positive Coaching Alliance emphasizes several key elements that are important for creating a meaningful experience for young athletes. Firstly, positive reinforcement plays a vital role in building confidence and motivation. Encouragement and recognition of effort and improvement can boost athletes' self-esteem and drive to excel.

Secondly, a supportive environment is crucial. Coaches, parents, and teammates should provide emotional support, constructive feedback, and foster a culture of respect, inclusivity, and teamwork. This environment encourages athletes to develop both as individuals and as part of a team.

Thirdly, skill development is essential. Kids should be given opportunities to learn and improve their athletic abilities. Coaches and mentors should provide appropriate training, guidance, and resources to help athletes enhance their skills, knowledge, and understanding of the sport.

Lastly, enjoyable participation is emphasized. Kids should have fun and enjoy the sports they engage in. PCA believes that a positive and enjoyable experience promotes long-term participation, love for the game, and overall well-being of young athletes.

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Answer:If the elevator accelerated downward then the tension force smallest then 500 N. Otherwise, if the elevator accelerated upward then the tension force larger then 500 N.

The tension force = 750 N because the elevator accelerated upward. Force acts upward has plus sign and force acts downward has minus sign.

T – w = m a

750 – 500 = 50 a

250 = 50 a

a = 250 / 50

a = 5.0 m s–2

Explanation:

The average induced emf in this coil is 3.52 volts.

When a coil is kept inside a changing magnetic field, an emf/voltage is produced inside it which is given by the following formula:

EMF = NBA/t

Here N is the number of turns in the coil

B is the magnetic field in which the coil is kept

A is the area of the coil

T is the time during which the magnetic field reverses its direction

Putting the given values in the above equation,

E = 120 x 0.20 x 0.050/0.34

E = 3.52 volts

Thus, the average induced emf in this coil is 3.52 volts.

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Answer:

\(\huge\boxed{True.}\)

Explanation:

This is true because gravity is independent of mass. Whether it's a heavy or a light object, when dropped, they both will hit the ground at the same time. The reason is that gravity does not depend on mass.

Hope this helped!

\(\qquad\qquad\huge\underline{{\sf Answer}}\)

Here we go ~

As we have been given, The spring of spring constant " m " was cut to form 2 new springs in ratio of 5 : 3.

we have to find out the spring constant of the longer spring which was formed, and it's given that spring constant of the main spring was " m "

Now, let the length of main spring be " l "

So, lengths of the resultant springs will be :

\(\qquad \cal \dashrightarrow \: \dfrac{5l}{8} \: \: and \: \: \dfrac{3l}{8} \: \: \: \: respectively\)

And we know that spring constant is inversely proportional to length of spring so, we infer that :

\(\qquad \cal \dashrightarrow \: m\propto \dfrac{1}{l} m \: \: \: \: \: - (1)\)

where, m is spring constant of main spring and l is its length.

\(\qquad \cal\dashrightarrow \: m_1 \propto \dfrac{8}{5l} \: \: \: \: \: \: \: - (2)\)

where, m1 is spring constant of longer spring, and 5l/8 is its length.

let's divide (2) by (1), we will get ~

\(\qquad \cal \dashrightarrow \: \dfrac{m_1}{m} = \dfrac{8}{5l} \div \dfrac{1}{l} \)

\(\qquad \cal \dashrightarrow \: \dfrac{m_1}{m} = \dfrac{8}{5l} \times \dfrac{l}{1} \)

\(\qquad \cal \dashrightarrow \: \dfrac{m_1}{m} = \dfrac{8}{5} \)

\(\qquad \cal \dashrightarrow \: {m_1}{} = \dfrac{8}{5} m \)

So, the spring constant of equivalent longer strong formed will be 8/5 m

prove:

\(m_2 = \frac{8m}{5} \)

Explanation:

Given:

Spring constant of spring= m

The ratio of spring = 5:3

To find:

spring constant of the larger piece of spring?

Solution:

Let the length of larger piece L2 be 5x and smaller piece L1 be 3x with spring constant m2 and m1 respectively.

now,

spring constant (m) inversely proportional to the length of spring i.e.

\(m \propto \: \frac{1}{l} {,}\: m_1 \propto \: \frac{1}{l_1} {,}\: m_2 \propto \: \frac{1}{l_2}\)

Also,

The spring is connected in series hence,

\( \frac{1}{m} = \frac{1}{m_1} + \frac{1}{m_2} \)

and

\( \frac{m_1}{m_2} = \frac{l_2}{l_1} \\ {m_1} = {m_2} \cdot \frac{l_2}{l_1} \\ {m_1} = {m_2} \cdot \frac{5}{3} \\ \)

Substituting above value in,

\( \frac{1}{m} = \frac{1}{m_1} + \frac{1}{m_2} \\ \frac{1}{m} = \frac{1}{{m_2} \cdot \frac{5}{3}} + \frac{1}{m_2} \\ \frac{1}{m} = \frac{3}{5m_2} + \frac{1}{m_2} \\ \frac{1}{m} = \frac{3m_2 + 5m_2}{5 {m_2}^{2} } \\ \frac{1}{m} = \frac{8m_2}{5 {m_2}^{2} } \\ \frac{1}{m} = \frac{8 \cancel {m_2}}{5 \cancel{m_2}^{2} } \\ \frac{1}{m} = \frac{8}{5m_2} \\ m_2 = \frac{8m}{5} \)

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Since the speed formula is = Distance / time

speed = distance /time

speed = metre/ seconds

speed = m/s

Answer:

a) m/s- meters per second

Explanation:

Recall that m/s (meters per second) is the official derived SI unit for speed. That is, it is length (meters) over time (second), hence m/s.

It can't be joules (J), since that is the SI unit for work & energy.

It also can't be newtons (N), since that is the SI unit for force.

Therefore, the correct answer is a) m/s- meters per second.

I hope this made sense to you, if not, feel free to let me know and I can try to provide further assistance.

Answer:

Explanation:

57.8 m/s

To convert the area from square centimeters (cm²) to square kilometers (km²), we need to divide by the appropriate conversion factor.1 square kilometer (km²) is equal to 10^10 square centimeters (cm²).

Therefore, the patch's area in square kilometers is approximately 1.74 × 10^(-8) km².The presence of antibiotic resistance genes in non-pathogenic bacteria is significant because it highlights the potential for resistance to spread between bacterial populations. Non-pathogenic bacteria can act as reservoirs of resistance genes, and under certain conditions, these genes can be transferred to pathogenic bacteria, leading to the emergence of antibiotic-resistant strains.

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