A sample contains 16 g of a radioactive isotope. how much radioactive
isotope remains in the sample after 1 half-life?

Apply second equation of kinematics

The article is not found here but surveys are important because they are representative samples of a population.

A survey is a useful tool based on population samples, which is used to make statistical analyses in a given investigation.

Differences in surveys are generally due to small sample sizes, which may lead to errors in the analysis of data.

In conclusion, the article is not found here but surveys are important because they are representative samples of a population.

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Answer:

please refer to the attachment.

The force that causes the protons in an atom to be attracted to one another is Strong nuclear.

Nuclear force is a force that acts between the protons and neutrons of atoms.

Neutrons and protons, both nucleons, are affected by the nuclear force almost identically and it is responsible for the attraction of protons in an atoms.

Thus, the force that causes the protons in an atom to be attracted to one another is Strong nuclear.

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Answer:

Wave amplitude of a transverse wave is the difference of height between a crest and the resting position. Wave amplitude of a longitudinal wave is the distance between particles of the medium where it is currently compressed by the wave.

Answer:

A wave caused by a disturbance with more energy has greater amplitude

Explanation:

Answer:

he density, or more precisely, the volumetric mass density, of a substance is its mass per unit volume. The symbol most often used for density is ρ

Explanation:

Assuming that all the bullet’s energy heats the paraffin, its final temperature is 27.1 degree C. The correct option is D.

Temperature is the degree of hotness and coldness of the material.

The energy of the bullet E = 1/2 mv²

E = 1/2 x 10 x 10⁻³ x (2000)²

E = 2 x 10⁴ J

This heat is used in heating the paraffin

E = m x c ΔT = m x c (Tfinal -Tinitial)

2 x 10⁴ J = 1 x 2.8 x 10³ x (Tfinal -20)

Tfinal = 27.1°C

Thus, the final temperature is 27.1 degree C. The correct option is D.

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The kinetic energy will be equal to the potential energy at top

m is mass

h is height

Answer:

286.7 m

Explanation:

So we are assuming the PE of the falcon is converted to KE

KE = PE

1/2 (.480)(75)^2 = .480 (9.81)(h )    solve for h = 286.7 m

The statement is true.

NASA stands for National Aeronautics and Space Administration. NASA is a U.S. government agency that is responsible for science and technology related to air and space. The Space Age started in 1957 with the launch of the Soviet satellite Sputnik. NASA opened for business on Oct.

NASA is constantly progressing in AI applications for space research, such as automated image analysis for the galaxy, planet, and star classification, developing autonomous space probes that can avoid space junk without human involvement, by using AI-based radio technology to make communication networks more.

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Answer:

D

Explanation:

Components that make up our asteroid belt between mars and jupiter

The magnitude of that other charge will be 9×10⁻⁵ C. The force on the charge is inverse of the distance.

The force of attraction between two charges, according to Coulomb's law, is directly proportional to the product of the charges and inversely proportional to the square of the distance between them.

The magnitude of that other charge is found as;

[tex]\rm F = \frac{Kq_1q_2}{r^2} \\\\ \rm 9 = \frac{9 \times 10^9 \times 1\times 10^{-4}\times q_2}{(3)^2} \\\\ q_2=9\times 10^{-5} \ C[/tex]

Hence, the magnitude of that other charge will be 9×10⁻⁵ C.

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The induced emf is found as -0.0531 V. When the flux coupling with a conductor or coil changes, electromotive Force, or EMF, is said to be induced.

Emf is the production of a potential difference in a coil as a result of changes in the magnetic flux passing through it.

From Lenz law,the the induced EMF is found as;

[tex]\rm e=- \frac{\triangle \phi _B}{\triangle t } \\\\\rm e=- \frac{A\triangle B}{\triangle t } \\\\ e= -\frac{\pi r^2(0-1.10)}{0.15} \\\\ e=-0.0531 \ V[/tex]

Hence,the induced emf is found as -0.0531 V.

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Answer:

Continental polar Cp

Explanation:

Answer:

1 / i + 1 / o = 1 / f        thin lens equation

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

f = o i / (i + o) = 6 * -.4 / (-.4 + 6) = -2.4 / 5.6 = -.42 m

The focal length is -.42 m indicating a convex mirror

M = -I / O    =   -.4 / 6 = -.067    negative magnification indicates erect image

O = M * 1.1 = -.067 * 1.1 = -.073 m     height of image

One must be careful with signs because they can vary with textbooks

I do not agree with the statement 'theoretical capacity of a process is the reciprocal of the theoretical flow time of the process' because time is only one variable.

The theoretical capacity of a process can be defined as the ability to perform a given work in a given period of time.

The theoretical capacity of a process is not only dependent on the time that takes to carry out but also on other variables (e.g., temperature, light conditions, etc).

In conclusion, I do not agree with the statement 'theoretical capacity of a process is the reciprocal of the theoretical flow time of the process' because time is only one variable.

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Yes there are

Explanation:

Both kind of charges exist. (e≈1.60 x 10^-19 C)

Charge is the intrinsic property of a body, that allows it to have either of two kinds of itself.

Positive elementary charge is

[tex]{x}^{1 +} [/tex]

And negative is

[tex] {x}^{1 -} [/tex]

There are two types of electric charges in nature, they are positive and negative charges.

What is meant by charge ?

Charge is defined as the intrinsic property of matter, by which it experiences a force, when placed in an electromagnetic field.

Here,

In nature, there are two type of electric charges. They are positive charge and negative charge.

The two charges exists in the nature, because, the positive charge attracts the negative charge.

The earth is actually neutral in nature. If a positive charged body is connected to the earth, the positive charge will be drained to the ground. This can be clearly described that, when the surface of earth becomes positively charged, there occurs a potential difference between the surface and the ground.

As a result, the electrons flows from the ground to the surface. The negative charge and positive charges cancels each other and thus neutralizing the surface.

The same happens when a negative charged body is connected to the surface of earth, the charge will be neutralized by the positive charge.

Hence,

There are two types of electric charges in nature, they are positive and negative charges.

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Answer:

static electricity is a flowing charges

Answer:

-11151.69N

Explanation:

Wy= -mgcos21=-1150*9.81*cos8.7=-11151.69N (negative because weight points downwards)

y- component  = -11151.69N

Wy= -mgcos21=-1150*9.81*cos8.7=-11151.69N

(negative because weight points downwards)

This item will finally boost up down the inclined plane due to the presence of an unbalanced pressure. it's far the parallel element of the pressure of gravity that reasons this acceleration. The parallel aspect of the force of gravity is the net force.

The y-issue of Vector B is contrary to the 40o perspective. while finding additives through drawing a right triangle across the given attitude, you want to put within the symptoms explicitly. In this case, the y-thing points up and so is wonderful.

For the maximum element, we will maintain weigh and weight immediately with the aid of the use of weighing as a verb and weight as a noun, with a smattering of exceptions for records and grades and blankets. Our advice: take consolation wherein you may. Because of this, an item's mass may be measured indirectly through its weight, and so, for regular purposes, weighing (the usage of a weighing scale) is a completely suited manner of measuring mass. Further, stability measures mass in a roundabout way by way of comparing the load of the measured item to that of an item(s) of recognized mass.

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Answer:

Gamma rays

Explanation:

Answer:

1.5v

Explanation:

This is a series circuit with identical components, so the potential difference will be shared equally between each component. (1.5V + 1.5V) / 2 = 1.5V

According to the diagram, voltmeter 1 will show 1.5 V. Because it is a series combination voltmeter 2 will also show 1.5 V.

The potential difference, or voltage, between two points in an electrical or electronic circuit is measured using a voltmeter, also referred to as a voltage meter. While some voltmeters are made for use in alternating current (AC) circuits, others are meant to be used in direct current (DC) courses. Voltage for radio frequency (RF) can be measured using specialized voltmeters.

A simple analog voltmeter is a high resistance connected in series with a sensitive galvanometer (current meter). A voltmeter needs to have high internal resistance. Otherwise, it will consume a sizable amount of current, interfering with the test circuit's performance. The range of voltages that the meter can display depends on the series resistance value and the sensitivity of the galvanometer.

Since all of the components in this series circuit are the same, any potential difference will be distributed equally i.e., (1.5V + 1.5V) / 2 = 1.5V

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Wavelength = 0.16m to 2.dp

Wavelength = wave speed / frequency

= 1,151 ÷ 7,143

= 0.1611367773

Hope this helps!

Let's find the shortest distance possible

To calculate we need the length per division divide total length by divisions

Till 1 mm it can measure

To increase accuracy increase no of divisons