Which statement about two objects having the same momentum is true?

The product of mass X velocity is the same for both.

Mass and velocity are the same for both.

They both have the same mass.

They both have the same velocity.

A bottle has a mass of 35.00g when empty and 98.44g. when filled with water. When filled with another fluid , the mass is 88.78g. The specific gravity of the other fluid is 0.848.

To determine the specific gravity of the other fluid, we first need to calculate the mass of the water and the mass of the other fluid, and then find the volume of the water. Specific gravity is the ratio of the density of the fluid to the density of water.

1. Calculate the mass of water:
Mass of filled bottle with water = 98.44g
Mass of empty bottle = 35.00g
Mass of water = 98.44g - 35.00g = 63.44g

2. Calculate the mass of the other fluid:
Mass of filled bottle with other fluid = 88.78g
Mass of empty bottle = 35.00g
Mass of other fluid = 88.78g - 35.00g = 53.78g

3. Find the volume of water:
The density of water at room temperature is approximately 1g/mL. Since mass = density × volume, we can find the volume of the water:
Volume of water = Mass of water / Density of water = 63.44g / 1g/mL = 63.44mL

4. Calculate the density of the other fluid:
Density = Mass / Volume
Density of other fluid = Mass of other fluid / Volume of water = 53.78g / 63.44mL = 0.848g/mL

5. Determine the specific gravity of the other fluid:
Specific gravity = Density of other fluid / Density of water = 0.848g/mL / 1g/mL = 0.848

The specific gravity of the other fluid is 0.848.

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To determine the internal diameter and depth of a cylinder container, we will will need a measuring tool such as a ruler or tape measure.

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Answer:

The correct answers to ur question are B and D

Explanation:

I know this because I had the same questions on my quiz and I got them right. Also there is another question just like this asking "According to the model, which two points on Earth are experiencing summer?" and the correct answer for that question is A and C!

Hope this helps!

Answer:A

Explanation:

Hdjfjdjfjr

A liquid thermometer can be used to test for fevers. When body temperature increases, the liquid inside the thermometer expands and rises to show a higher temperature reading, the explanation that describes the change in the thermal energy,

The thermometer tip is heated by conduction with the person's body. The particles of the thermometer tip then transfer heat by conduction with the liquid inside of it. The particles inside the liquid then convect heat causing the warmer particles to speed up, expand, and rise.

It can be defined as the form of the energy in which heat is transferred from one body to another body due to their molecular movements, thermal energy is also known as heat energy.

Conduction with the subject's body heats the thermometer's tip. The liquid inside the thermometer is subsequently heated by conduction between the particles of the thermometer tip. The warmer particles then accelerate, expand, and ascend as a result of the heat convecting through the liquid's particles.

Thus, the correct answer is option D.

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The change in total energy of a closed system, apart from changes in kinetic and potential energies, is accounted for by the change in internal energy.

Internal energy includes the sum of all microscopic forms of energy within the system, such as the energy associated with the motion of particles and their interactions.

When there are no changes in kinetic or potential energies, any change in the total energy of the system can be attributed to the change in internal energy.

This change can occur due to various factors, such as heat transfer or work done on or by the system.

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Answer:

120 kgm/s

Explanation:

Force= mass× acceleration

= 60kg × 2.0m/s

= 120 kgm/s

Answer:

960 N

Explanation:

Find acceleration

  Change in velocity / change in time

      8 /10 = .8 m/s^2

Then F = ma

            = 1200 kg  * .8 m/s^2 = 960 N

Answer:

Explanation:

PE = mgh where m is the mass, g is gravity, and h is the height from which the object can potentially fall. We are given enough info here to solve for h. Filling in:

42 = 1.8(9.8)h and

\(h=\frac{42}{(1.8)(9.8)}\) and rounding to 2 sig fig's as we need:

h = 2.4 m, choice D

The words that complete the blanks are; carbon dioxide; warming. Option 1

The term volcanic eruption has to do with a situation in which molten magma suddenly bursts out of the earth and may solidify to give rise to the emergence of rocks. We know that rocks are the solid parts of the earth hat may occur above or below the earth's crust. During a large volcanic event. It is common that carbon dioxide is evolved into the atmosphere.

To complete the sentence; One of the major events that contributed to Snowball Earth was the series of large volcanic eruptions that occurred 700 million years ago in what is now Canada. These eruptions caused carbon dioxide particles to get trapped in the atmosphere. The particles blocked incoming solar radiation, which had a strong  warming effect on the planet.

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Answer:

thanks!

Explanation:

Answer:

B: 18

Explanation:

A group is a vertical column of the periodic table based on the organization of the outer shell electrons.  There are a total of 18 groups. From left to right in the periodic table, there are two groups (1 and 2) of elements in the hydrogen block, ten groups (3 through 12) in the transition block, and six groups (13 through 18) in the main block. The elements in the inner-transition block (lanthanoids and actinoids) are not given group numbers.

I hope this helps

Answer:

B. 18

Explanation:

Groups are the vertical columns of the periodic table. By observing a modern periodic table, you will find 18 groups.

A 4kg steel ball moving with a speed of 12m/s in the positive x-direction has a glancing collision with a 6kg ball at rest. After the collision, the 4kg ball moves at an angle of 25 degrees above the x-axis, and the 6kg ball moves at an angle of 40 degrees below the x-axis.The velocities of the two objects after the collision are given by v1f and v2f.

Using the conservation of momentum, we can write: (m1v1i + m2v2i) = (m1v1f + m2v2f) where m1 and v1i are the mass and initial velocity of the 4kg ball, m2 and v2i are the mass and initial velocity of the 6kg ball, and v1f and v2f are the final velocities of the two objects after the collision.

Using the conservation of kinetic energy, we can also write: (1/2)m1v1i² + (1/2)m2v2i² = (1/2)m1v1f² + (1/2)m2v2f² We can use these two equations to solve for v1f and v2f.

First, let's find the initial momentum and kinetic energy of the system:(4kg)(12m/s) + (6kg)(0m/s) = 48kgm/s(1/2)(4kg)(12m/s)² + (1/2)(6kg)(0m/s)² = 288J.

Now, we can use these values to solve for v1f and v2f.

Starting with the momentum equation and substituting in the known values: (4kg)(12m/s) = (4kg)(v1f cos(25°)) + (6kg)(v2f cos(40°)) 48kgm/s = (4kg)(v1f cos(25°)) + (6kg)(v2f cos(40°))

Dividing by 2, we get: 24kgm/s = (2kg)(v1f cos(25°)) + (3kg)(v2f cos(40°))

Solving for v1f cos(25°), we get: v1f cos(25°) = (24kgm/s - 3kgv2f cos(40°))/2kg

Now, let's use the kinetic energy equation to solve for v2f.

Substituting in the known values: 288J = (1/2)(4kg)(v1f sin(25°))² + (1/2)(6kg)(v2f sin(40°))²

Simplifying and solving for v2f, we get: v2f = sqrt((576 - 8v1f² sin²(25°))/(3 sin²(40°)))

Now that we have an expression for v2f, we can substitute it into the momentum equation to solve for v1f.

Substituting in the known values and simplifying, we get: v1f cos(25°) = (24 - 4v1f cos(25°) - 3v2f cos(40°))/2

Solving for v1f, we get: v1f = (24 cos(25°) - 3v2f cos(40°))/6cos(25°) + 2

We can substitute in the value of v2f we found earlier to get:v1f = 2.47m/sv2f = -2.34m/s.

Therefore, the 4kg ball moves at 2.47m/s at an angle of 25 degrees above the x-axis after the collision, and the 6kg ball moves at 2.34m/s at an angle of 40 degrees below the x-axis after the collision.

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Answer:

The index of refraction can be calculated using Snell's law:

n1sin(theta1) = n2sin(theta2)

where n1 and theta1 are the index of refraction and angle of incidence in the first medium (glass), and n2 and theta2 are the index of refraction and angle of refraction in the second medium (unknown material).

Plugging in the given values:

1.76sin(25) = n2sin(35)

Solving for n2:

n2 = (1.76*sin(25))/sin(35)

n2 ≈ 1.29

Therefore, the index of refraction for the unknown material is approximately 1.29.

The element that has 4 electrons, 3 protons and 6 neutrons is lithium ion.

An element is one of the simplest chemical substances that cannot be decomposed in a chemical reaction or by any chemical means and made up of atoms all having the same number of protons.

The atom of an element is made up of three subatomic particles namely;

In a neutral element, the number of protons and electrons are the same i.e. equal. According to this question, an element has 4 electrons, 3 protons and 6 neutrons.

The element in the periodic table with 3 protons is Lithium. This means that the element is lithium ion because it has gained one electron.

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Answer:

200m

Explanation:

speed = distance

--------------

time taken

from the graph

...speed = 20m/s

....time 10s before constant speed

....distance before constant speed

= speed × time taken

= 20m/s × 10s

= 200m

Answer:

Its inductance L = 166 mH

Explanation:

Since a current, I = 0.698 A is obtained when a voltage , V = 5.62 V is applied, the resistance of the coil is gotten from V = IR

R = V/I = 5.62/0.698 = 8.052 Ω

Since we have a current of I' = 0.36 A (rms) when a voltage of V' = 35.1 V (rms) is applied, the impedance Z of the coil is gotten from

V₀' = I₀'Z where V₀ = maximum voltage = √2V' and I₀ = maximum current = √2I'

Z = V'/I' = √2 × 35.1 V/√2 × 0.36 V = 97.5 Ω

WE now find the reactance X of the coil from

Z² = X² + R²

X = √(Z² - R²)

= √(97.5² - 8.05²)

= √(9506.25 - 64.8025)

= √9441.4475

= 97.17 Ω

Now, the reactance X = 2πfL where f = frequency of generator = 93.1 Hz and L = inductance of coil.

L = X/2πf

= 97.17/2π(93.1 Hz)

= 97.17 Ω/584.965 rad/s

= 0.166 H

= 166 mH

Its inductance L = 166 mH

The delta Internal energy u for a system which has the following two steps is zero.

E = q + w

where q = heat and w = work completed

Q is positive when the system absorbs heat.

Q is negative when the system emits heat.

When the mechanism is functioning, w is negative.

The system performs better when work is done on it.

Step 1

E1 = 60 KJ + 40 KJ = 100 KJ.

E2 = (30 KJ + 70 KJ = (-100 KJ)

E1+E2=100KJ+(-100)KJ = 0KJ

Internal energy is the total internal energy of a thermodynamic system. It consists of both internal kinetic and potential energy contributions and is the energy needed to create or prepare the system in its internal state at the time. It keeps track of the system's energy gains and losses as a result of adjustments to its internal condition. [1][2] Both the system's total kinetic energy of motion and any external energies from the surrounding force fields are excluded. The cornerstone of the first law of thermodynamics, the law of conservation of energy, is the notion that the internal energy of an isolated system remains constant. Internal energy has a wide range of facets.

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The drift velocity v will give us the answer.

\(v = (5 V) / ((2x10^20 electrons/m³) * (2x10^-6 m²) * (1.6x10^-19 C))\)

To find the drift velocity of charges in the wire, we can use Ohm's Law, which states that the current flowing through a conductor is directly proportional to the applied voltage and inversely proportional to the resistance. The equation for Ohm's Law is:

I = V / R

Where:

I is the current flowing through the wire,

V is the applied voltage (in this case, 5 Volts),

R is the resistance of the wire (given as 10^2 Ohms).

Now, we need to calculate the current flowing through the wire using Ohm's Law. The current is the rate at which charges (electrons) move through the wire. The equation for current is:

I = n * A * v * q

Where:

n is the number of charges per unit volume (given as 2x10^20 electrons),

A is the cross-sectional area of the wire (given as 2 mm² or 2x10^-6 m²),

v is the drift velocity of the charges (what we need to find),

q is the charge of each electron (1.6x10^-19 C).

Rearranging the equation and solving for v, we have:

v = I / (n * A * q)

Substituting the given values:

v = (5 V) / ((2x10^20 electrons/m³) * (2x10^-6 m²) * (1.6x10^-19 C))

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At the location marked by the red line, the total internal loading is -4 kN of shear force and 8 kNm of the moment.

The internal loading due to the support at the wall can be determined using the equation for the shear force (V) and the moment (M) at any point along the beam:

V = -wL/2 = -4*6/2 = -12 kN

M = 0 kNm

Next, we will determine the internal loading due to the uniform distributed load. The shear force (V) and the moment (M) at any point along the beam due to the uniform distributed load can be determined using the following equations:

V = wx = 42 = 8 kN

M = (wx)(x/2) = (42)(2/2) = 8 kNm

Finally, we will add the internal loading due to the support at the wall and the uniform distributed load to find the total internal loading at the location marked by the red line:

V_total = V_support + V_load = -12 + 8 = -4 kN

M_total = M_support + M_load = 0 + 8 = 8 kNm

So at the location marked by the red line, the total internal loading is -4 kN of shear force and 8 kNm of moment.

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The complete question is:

A horizontal beam of length L = 6 m is supported by a wall at one end and a uniform distributed load of w = 4 kN/m is applied to the beam along its entire length. The internal loading at the location marked by the red line, which is located at a distance x = 2 m from the left end of the beam, needs to be determined.

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The factors that affect an object’s gravitational potential energy are its height with respect to some reference point, mass of the object, and the intensity of the gravitational field it is in.

Gravitational energy is the potential energy linked with the force due to gravitation, as work is required to displaces the objects against Earth’s gravity in upward direction. The potential energy due to displacement in positions is called gravitational potential energy, and the best example where gravitational potential energy can be seen is by water in an elevated reservoir or stored behind a dam. If an object falls from a point to another point inside a gravitational field, the force due to gravity will do some work in the positive direction on the object, and the gravitational potential energy will  starts to decrease by the same amount.

If we consider a book placed on top of a table. We can observe that some external force works against the gravity, while the book in on the table.  The potential energy stored by the book goes to accelerate the mass of the book and is converted into kinetic energy, if the book falls off the table. When the book hits the floor, this kinetic energy is converted into heat and sound by the impact with floor.

As we know that at any height from the ground the potential energy of the mass is given by

U = mgh

so potential energy depends on

1) mass of object (m)

2) acceleration due to gravity (g)

3) height from the earth surface (h)

Hence, height with respect to some reference point of the object, mass of the object, and the intensity of the gravitational field affects the gravitational potential energy of an object.

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The resistance of the lamp is approximately 2.857 ohms.

Ohm's law states that the current flowing through a conductor is directly proportional to the voltage across it, given a constant temperature. Mathematically, it can be expressed as V = IR, where V is the voltage, I is the current, and R is the resistance of the conductor.

To calculate the resistance of the lamp, we can use Ohm's law.
Given that the lamp is connected to a 2 V DC power supply and the current through the lamp is 0.7 A, we can plug these values into the equation:

R = V/I
R = 2 V / 0.7 A

R = 2.857 ohm

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Answer:

Explanation: I kinda think soo

The universe is the collection of galaxies, The Andromeda Galaxy has spectral lines with blue shift. The conclusion is that the Universe has stopped expanding.

The Andromeda Galaxy is the nearest spiral neighbor that has spectral lines showing a blue shift.

Therefore, this concludes that, the Universe has stopped expanding. This galaxy is slowly shifting towards us.

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The maximum speed around a level curve is 30. 0 km/h. What is the maximum speed around a curve with twice the radius is 42.4 km/h.

Meaning of the maximum speed curve:

You might travel at a maximum speed of around 1.4 times as fast on a curve with a radius of 60 meters (twice as much), according to the equation, which also states that your maximum speed is proportional to the square root of the curve's radius.

According to that,

30 km/hr is the maximum speed.

New radius equals 2 r

In all scenarios, the centripetal force will be the same.

Calculating the new top speed around a curve is necessary.

Using the centripetal force formula:

\(\frac{mv^{2} }{r} = \frac{mv^{2}}{r}\)

Fill out the formula with the value

\(\frac{v^{2} }{2r} = \frac{30^{2} }{2r}\)

\(v= 30\sqrt{2} \ Km/h\)

The maximum speed around a curve is therefore 42.4 km/h.

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Answer:

Meat, cereals, milk, fish, fruits and nuts

Answer:

Green leafy vegetables too

Explanation:

hope it helps

Answer: Proxima Centauri is the closet star about 40,208,000,000,000 km away. 

Explanation:

Answer:

The closest star is about 25,300,000,000,000 miles (39,900,000,000,000 kilometers) away

Explanation:

Jane's rate along the summit was 25 mph.

Let's assume that Jane's rate along the summit is represented by the variable "x" in miles per hour. We know that she rode 72 miles uphill at a rate that was 5 mph slower than her rate along the summit. Therefore, her rate uphill would be (x - 5) mph.

To find her average rate for the entire journey, we can calculate the total time taken for each segment and divide it by the total distance covered.

Time taken to ride uphill = Distance / Rate

Time taken to ride uphill = 72 miles / (x - 5) mph

Time taken to ride along the summit = Distance / Rate

Time taken to ride along the summit = 21 miles / x mph

Since the total time taken for the entire journey is 3 hours, we can write the equation:

Time taken to ride uphill + Time taken to ride along the summit = Total time

72 / (x - 5) + 21 / x = 3

By solving this equation, we find that x = 25 mph. Therefore, Jane's rate along the summit was 25 mph.

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Detailed observations of the structure of the Milky Way are difficult because our position within the galaxy obstructs our view of certain regions, such as the galactic center. Additionally, the presence of interstellar dust clouds and the limitations of current technology make it challenging to collect comprehensive data on every star and structure within the Milky Way.

Detailed observations of the structure of the Milky Way are difficult because:

1. Our solar system is located within the Milky Way, which makes it challenging to get a comprehensive view of the entire galaxy.
2. The presence of dust and gas in the Milky Way obstructs our view, causing difficulties in observing distant stars and structures.
3. The sheer size of the Milky Way, with its billions of stars, makes it difficult to study its overall structure in detail.

These factors contribute to the challenges in making detailed observations of the Milky Way's structure.

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Answer:

Nitrogen has Electronic configuration 1s2 2s2 2p3. Fluorine has Electronic configuration 1s2 2s2 2p5 i.e. nitrogen has half filled p subshell that makes it more stable than fluorine and fluorine requires only 1 electron to complete it's octet to get stable..Therefore Fluorine is more reactive than Nitrogen.

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