Calculate the force between two objects that have masses of 70 kilograms and 2,000 kilograms separated by a distance of 1 meter.

Answer:

0.0013 m/s

Explanation:

Speed in inches per minute = 3 inches per minute

Speed in m/s =?

Next, we shall convert 3 inches per minute (3 in/min) to metre per minute.(m/min)

39 in/min = 1 m/min

Therefore,

3 in/min = 3 in/min × 1 m/min / 39 in/min

3 in/min = 1/13 m/min

Finally, we shall convert 1/13 m/min to m/s. This can be obtained as follow:

1 m/min = 1/60 m/s

Therefore,

1/13 m/min = 1/13 m/min × 1/60 m/s / 1 m/min

1/13 m/min = 1/780 m/s

1/13 m/min = 0.0013 m/s

Thus, 3 in/min is equivalent to 0.0013 m/s.

Therefore the speed of the snail in m/s is 0.0013 m/s

Answer:

Gravity

Explanation:

Answer:

OA. potential; kinetic

Explanation:

Explanation:

hope it heeeeeeeeeeeeeelps

Explanation:

Newton's second law of motion states that, "Everybody in the universe continues in its state of rest or uniform motion in a straight line unless any unbalanced force is applied to it"

The ionization energy of helium is -79.0 eV.

To calculate the ionization energy of helium, we need to find the difference between the ground-state energy of helium and the energy of the system when one electron is removed.

Given that the ground-state energy of helium (Eg) is -79.0 eV, we need to calculate the energy when one electron is removed, which is denoted as E(He+).

The ionization energy (IE) is then given by the equation:

IE = E(He+) - Eg

To find E(He+), we need to consider that removing one electron from helium leaves us with a helium ion with only one electron remaining. The energy of a helium ion with one electron is denoted as E(He+), and it can be calculated as the ground-state energy of helium plus the ionization energy of the removed electron.

E(He+) = Eg + IE

Since helium has two electrons, the ionization energy of helium is equal to the energy of the removed electron. Therefore, the ionization energy (IE) is equal to the ground-state energy of helium.

IE = Eg = -79.0 eV

So, the ionization energy of helium is -79.0 eV.

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Answer:

It’s D

Explanation:

Because I took the USA test prep and got it right

The distance of the surface illuminated by the light of the given wavelength is 5,269.32 m.

The distance of the surface illuminated by the light of the given wavelength is calculated as follows;

D = (rd)/(0.61λ)

where;

D = (0.45 x 0.005) / (0.61 x 700 x 10⁻⁹)

D = 5,269.32 m

Thus, the distance of the surface illuminated by the light of the given wavelength is 5,269.32 m.

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Answer:

when u find out pls lmk! i have the same question and I've been stuck for a while lol

Heavy elements like pb (lead) and u (uranium) were generated during the collapse of a star and subsequent nuclear.

Answer:

I think 1. is 17 and 2. is 600

Explanation:

sorry its been a while..

Answer:

The box with a mass of 10 kilograms would have a greater amount of potential energy than the box with a mass of 4 kilograms.

Explanation:

Potential energy can be defined as an energy possessed by an object or body due to its position.

Mathematically, potential energy is given by the formula;

\( P.E = mgh\)

Where,

P.E represents potential energy measured in Joules.

m represents the mass of an object.

g represents acceleration due to gravity measured in meters per seconds square.

h represents the height measured in meters.

Let's assume the height is 5 meters.

Acceleration due to gravity, g = 10 m/s²

For box with mass of 10 kg

\( P.E = 10*10*5\)

P.E = 500 Joules.

For box with mass of 4 kg;

\( P.E = 4*10*5\)

P.E = 200 Joules.

Hence, the box with a mass of 10 kilograms would have a greater amount of potential energy than the box with a mass of 4 kilograms.

If 80 BTU of heat energy are added to 2 lb of water at 40°F, the final temperature of the water will be 80°F.

One BTU (British Thermal Unit) is the amount of heat required to raise the temperature of one pound of water by one degree Fahrenheit.

So, if we have 80 BTU of heat energy and 2 lb of water, we can use the following formula to find the final temperature:

Final temperature = Initial temperature + (BTU / lb of water)

Final temperature = 40°F + (80 BTU / 2 lb)

Final temperature = 40°F + 40°F

Final temperature = 80°F

Therefore, the final temperature of the water will be 80°F.

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Answer:

speed = 12.353 m/s

Explanation:

\(speed = \frac{distance}{time} \)

distance = 63 m

time = 5.1 s

substitute the values into the formula

\(speed = \frac{63 \: m}{5.1 \: s} \)

speed = 12.353 m/s

The acceleration of the car can be calculated using the formula a = (v_f - v_i) / t, where a is acceleration, v_f is final velocity, v_i is initial velocity, and t is time. Plugging in the values given, we get a = (21 m/s - 14 m/s) / 6.0 s = 1.17 m/s^2.

To calculate the distance traveled by the car, we can use the formula d = v_i*t + 1/2*a*t^2. Plugging in the values, we get d = 14 m/s * 6.0 s + 1/2*1.17 m/s^2 * (6.0 s)^2 = 78.6 m. Therefore, the car traveled a distance of 78.6 meters in this time.

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Answer: The correct option would be (Put it in the refrigerator)

Explanation: Have a good day :)

Answer:

C

Explanation:

Decreasing its temp decreases particle movement

The signal that is needed to indicate that a radiation exposure has been made is dosimetry. Dosimetry is the measurement and calculation of the amount of radiation to which a person or an object has been exposed, hence the correct answer is  option C).

The signal that is needed to indicate that a radiation exposure has been made is dosimetry. Dosimetry is the measurement and calculation of the amount of radiation to which a person or an object has been exposed. Dosimeters are devices that are used to measure the radiation dose and provide a signal indicating the exposure level. Audible sound and visible light are not typically used to indicate radiation exposure because they do not provide accurate and quantitative information about the level of exposure. Density standard is also not a suitable signal because it is not related to radiation exposure. The atomic number of the material is not a signal that directly indicates radiation exposure. However, it is an important factor that affects the amount and type of radiation that a material can absorb or shield. The higher the atomic number of a material, the better it is at absorbing radiation. This is why lead, which has a high atomic number, is often used to shield against radiation. Therefore option C) is correct.

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Answer:

D

Explanation:

Well, light travelling in a year is a light year.

Answer:

D: Lightyear

Explanation:

One lightyear (ly) is the distance traveled by light in year time.

It is equal to \(9.46 * 10^{15} \ m\).

Answer: For #1, 7.3 m/s2.

Explanation: See this wikipedia screenshot for explanation, it's complicated.

The excited state (n2) for a hydrogen atom emitting a wavelength of 93.8 nm when n1 = 1 is 5. Answer choice B is correct.

To solve this problem, we can use the formula for calculating the energy of a photon:

E = hc/λ

where E is the energy of the photon, h is Planck's constant, c is the speed of light, and λ is the wavelength of the emitted light.

We know that the initial state of the hydrogen atom is n1 = 1. When an electron transitions from a higher energy level to a lower energy level, a photon is emitted with energy equal to the difference in energy between the two levels. So we can calculate the energy of the emitted photon as follows:

E = -13.6 eV (1/n1^2 - 1/n2^2)

where -13.6 eV is the energy of the ground state of the hydrogen atom, and n2 is the excited state that we are trying to find.

Equating the two expressions for energy and solving for n2, we get:

-13.6 eV (1/1^2 - 1/n2^2) = hc/λ

Simplifying and solving for n2, we get:

n2 = 5

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An electric field is produced when a wire is bent into a circular shape lying flat on the table. The magnitude and direction of the electric field produced by the wire at a point 4.00 cm directly above its center can be found using the Biot-Savart law.

The formula for the Biot-Savart law is given below;

\(`dB = µI(dl × r) / (4πr²)\)`Where dB is the magnetic field at a point, µ is the permeability of free space, I is the current, dl is the current element, r is the distance between the point and the current element, and θ is the angle between the vectors dl and r.

The wire is carrying a current I and has a radius R, which means that the current element can be expressed as `dl = R dθ`. The magnetic field at a point P located at a distance z above the center of the wire is given by;

\(`B = µI / 4π ∫ (R dθ / r² + z²)½`\)The angle between dl and r is 90° because the current element is perpendicular to the point.

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the splitting of a large nucleus into smaller nuclei is the phrase that describes radioactive decay

The process through which an unstable atomic nucleus loses energy through radiation is known as radioactive decay, also known as nuclear decay, radioactivity, radioactive disintegration, or nuclear disintegration. A substance with unstable nuclei is regarded as radioactive decay

The complete question is

Which phrase describes radioactive decay? (1 point)

the triggering of one reaction by the products of another

the joining of small nuclei into a laroid nucleus

o the splitting of a large nucleus into smaller nuclei

o the spontaneous emission of radiation

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The solid sphere will reach the bottom of the inclined plane first. The reason for this is that the sphere has the smallest surface area to volume ratio which means that there is less friction acting on it as it rolls down the incline.

Solid sphere moves more quickly than solid cylinder because it has a lower moment of inertia and more kinetic energy during translation. Comparable solid objects move more slowly than hollow ones.

If a cylinder and a sphere have the same mass and radius, the cylinder will have a greater moment of inertia due to its greater mass at its edges. Because the sphere's moment of inertia is smaller, it will move faster and arrive at the bottom first.

The process by which potential energy (PE) is transformed into kinetic energy is the cause of the solid cylinder's faster descent than the hollow cylinder. Some of the PE is transformed to rotating kinetic energy (RKE), not simply linear kinetic energy, because the cylinder is rolling (LKE).

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Answer: First runner has more kinetic energy

Explanation:

The formula for kinetic energy is defined to be:

\(KE=\frac{1}{2} mv^2\)

Plug in the value for each runner to get:

\(KE_1=0.5(46kg)(8m/s)^2=1472J\)

\(KE_2=0.5(92kg)(4m/s)^2=736J\)

Answer:

Explanation:

Given:

To Find:

SolutioN:

We know that,

here,

Substituting the required values:

Density = 11g /63 cm³

Density = 0.174 grams/ cm³

Hence,

\(\large\boxed{\bold{Formula: d=\frac{m}{V}}}\)

Let's solve!

In this question all the values are given so we'll simply have to substitute and solve.

So, we'll have to divide mass by volume.

Substitute the values according to the formula.

\(d= \frac{11}{63}\)

Calculator value:

\(\bold{d= 0.174603174 \: g/ {cm}^{3}}\)

Now, we can round off to 3 significant figures.

The value in ten thousandths place is greater than 5 so we'll have to round up by adding 1 to the thousandths place.

Final answer:

\(\large\boxed{\bold{d= 0.175 \: g/ {cm}^{3}}}\)

Answer:

The correct answer to the following question will be "An ecosystem".

Explanation:

So that the above seems to be the right answer.

The efficiency of the Pelton Wheel is maximum when the speed ratio is unity (u = 1) and the jet strikes the bucket at 180°, therefore the value of u and φ (angle between jet and tangent at the point of contact) are chosen as 1 and 180° respectively.

Now we can determine the power output of the turbine using the following equation:P = m × (V1 - V2) × gWhere,P = Power output of the Pelton Wheelm = Mass flow rate of waterV1 = Velocity of jetV2 = Velocity of leaving water streamg = Acceleration due to gravityTaking the absolute value of the head gives the velocity of the jet:V1 = √(2gh)Where,g = Acceleration due to gravityh = HeadThe velocity of the water leaving the bucket is given by:V2 = V1 - 2u × V1 = (1 - 2u) × V1P = m × V1 × (1 - 2u) × g.

Therefore the head required for 1-m-diameter Pelton Wheel rotating at 300 rpm is:(c) 40We can use the following equation for solving this question as described above:P = m × (V1 - V2) × gSince, u = 1V2 = (1 - 2u) × V1V2 = (1 - 2) × V1V2 = - V1Then,P = m × (V1 - (-V1)) × gP = m × (2V1) × gP = m × 2 × √(2gh) × gP = 2 × m × g × √(2gh)Therefore the power produced by the Pelton Wheel is directly proportional to the head of water supplied to it.

Therefore, the higher the head of water supplied to the Pelton Wheel, the higher will be the power output of the Pelton Wheel. From the above expression of power, we can see that the power of the Pelton Wheel depends on the value of √(2gh). This means that as the value of h increases, the power output of the Pelton Wheel increases. Therefore, the best-suited head for this turbine is the highest one from the given options, which is (c) 40.

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The direction of the velocity of the other part in the instant after the explosion is:  up and to the left.

When a particle is hurled obliquely near the surface of the earth, it travels along a curved path while accelerating continuously in the direction of the planet's center. Such a particle's motion is known as projectile motion.

As one part falls straight down with no horizontal motion, the total component of horizontal momentum will be in the another part and due to law of conservation of momentum, a upward momentum will be introduced after the collision. the direction of the velocity of it will be  up and to the left.

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Answer:

ooof mood

Explanation:

Answer:

i kinda like physics.

Explanation: