An astronaut on the surface of a large spherical asteroid fires a 5. 0 kg cannonball horizontally from a cannon. The asteroid has a diameter of 210 km , and has an acceleration due to gravity at its surface equal to one twelfth of the value on Earth

The frequency of light that is transmitted through a sheet of transparent plastic is the same as the frequency of illuminating light. Transparent materials, like plastic, do not absorb light and therefore the frequency of light that passes through them remains unchanged.

Transparency is a concept or value of being open and honest with others. It is the practice of being open, honest, and accountable with oneself and with others. Transparency involves communication between individuals and organizations in a way that is easily understood, accessible, and open to public scrutiny. Transparency is a key component of good governance, as it allows for public scrutiny and accountability, and encourages public participation in decision-making. Transparency also fosters trust in the government and promotes economic growth and development.

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Given:

The mass of the car is m = 1725 kg

The initial velocity of the car is

The final velocity of the car is

The time is t = 4.4 s

To find the applied force.

Explanation:

The force can be calculated by the formula

Here, a is the acceleration.

The acceleration can be calculated as

On substituting the values, the force applied will be

Thus, the applied force is 3527.625 N

Answer:

Copper Cu

Lead Pb

Phosphorus P

Arsenic As

Barium Ba

The velocity of water at the smaller cross-section is 25 m/s.

Area of larger cross section, A₁ = 100 cm²

Area of larger cross section, A₂ = 5 cm²

Velocity of water at larger section, v₁ = 1.25 m/s

According to equation of continuity,

A₁v₁ = A₂v₂

Therefore, the velocity of water at the smaller cross-section,

v₂ = A₁v₁/A₂

v₂ = 100 x 1.25/5

v₂ = 25 m/s

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Answer:

C

Explanation:

(C) Positively charged particles moved upward, causing the top of the rod to have a positive charge and the bottom of the rod to have a negative charge.

When a neutral and non-polarized conducting rod moves through a magnetic field, it will experience a force known as the Lorentz force. This force acts on the moving charges within the rod, and causes them to move perpendicular to both the direction of motion and the magnetic field. In this case, since the rod is moving to the right, and the magnetic field is pointing into the screen, the Lorentz force will act upward on the positively charged particles within the rod. This motion will cause a separation of charges in the rod, with the top having a positive charge and the bottom having a negative charge.

Answer:

i found this i hope it helps

Explanation:

The magnitude of this force depends upon the mass of each object and the distance between the centers of the two objects. Mathematically, we say the force of gravity depends directly upon the masses of the objects and inversely upon the distance between the objects squared.

Answer: \(CBr_4\) : carbon tetrabromide

Explanation:

\(CBr_4\) is a covalent compound because in this compound the sharing of electrons takes place between carbon and bromine. Both the elements are non-metals. Hence, it will form covalent bond.

The naming of covalent compound is given by:

1. The less electronegative element is written first.

2. The more electronegative element is written second. Then a suffix is added with it. The suffix added is '-ide'.

3. If atoms of an element is greater than 1, then prefixes are added which are 'mono' for 1 atom, 'di' for 2 atoms, 'tri' for 3 atoms and so on.

Hence, the correct name for \(CBr_4\) is carbon tetrabromide.

Answer:

Carbon tetrabromide ~ CBr4

Chlorine monofluoride~ ClF

Explanation:

EDGU 2021

When 10 kg of ice melts into water, the work done against the atmosphere can be calculated using the difference in densities between ice and water. By considering the volume change during the phase transition, the work done against the atmospheric pressure can be determined.

When ice melts into water, it undergoes a phase transition from a solid to a liquid state. This transition involves a change in volume due to the difference in density between ice and water. The work done against the atmosphere can be calculated by considering the pressure exerted by the atmosphere and the change in volume.

The density of ice is 916.23 kg/m³, while the density of water is 999.84 kg/m³ at 0°C and 1 atm of pressure. The volume occupied by 10 kg of ice can be determined by dividing the mass by the density of ice. Similarly, the volume occupied by 10 kg of water can be calculated using the density of water.

By subtracting the initial volume of the ice from the final volume of the water, we can find the change in volume during the melting process. This change in volume multiplied by the atmospheric pressure gives us the work done against the atmosphere.

It is important to note that the work done against the atmosphere is positive because the system is doing work on the surroundings. Thus, the magnitude of the work done against the atmosphere can be calculated by taking the absolute value of the work.

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The vertical velocity of the ball will decrease with time.

The relation between the vertical velocity and time is given as,

Here, u is the initial velocity and g is acceleration due to gravity.

The force that is needed to accelerate the arrow is 49 Newtons.

To determine magnitude of the force needed to give a 0.25 kg arrow an acceleration of 196 m/s², we can use the equation of force:

F = ma

where F is the force, m is the mass, and a is the acceleration.

Given that m = 0.25 kg and a = 196 m/s², we can substitute these values into the equation and solve for F:

F = (0.25 kg)(196 m/s²)

F = 49 N

So the force needed to give a 0.25 kg arrow an acceleration of 196 m/s² is 49 N. This is the correct answer out of the options given.

To arrive at this answer we used Newton's second law of motion, which states that the force acting on an object is equal to the mass of the object multiplied by its acceleration. Thus, we were able to use the equation "F = ma" (where F is force, m is mass and a is acceleration) to solve for the force required to accelerate the arrow at 196 m/s².

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Answer:

2 seconds

Explanation:

It only went up by 2

Answer:

If you hear thunder and then see lightning at almost the same time, this means that the lightning was likely close by. Thunder is the sound created by lightning, which is the discharge of energy between two clouds or between a cloud and the ground. Because sound travels much slower than light, it takes longer for the thunder to be heard, which is why we usually hear thunder after seeing a flash of lightning. This indicates that the lightning was very close in proximity and that you should be aware of the potential danger of an impending thunderstorm.

Answer:

           h = h₀/2,  the liquid column rises half the height

Explanation:

Pressure is defined as force per area,  

         P = F / A

in a barometer the force is the weights of the liquid column

         F = W = mg

         P = m g/A

if we use the definition of density

         ρ = \(\frac{m}{A h}\)

         \(\frac{m}{A}\) = ρ h

we substitute

         P = ρ g h

Let's use the index o for the mercury

         P₀ = ρ₀ g h₀

when we change the liquid for another with

          ρ = 2ρ₀

the pressure expression is

         P = 2ρ₀ g h

in the problem they indicate that the pressure is equal to the initial P = P₀

we substitute

           ρ₀ g h₀ = 2ρ₀ g h

           h₀ = 2h

           h = h₀/2

the liquid column rises half the height

Answer:

Height = 0.25 metres

Speed = 3.26 m/s

Explanation:

Kinetic energy = 17 joules

Mechanical energy = 25

Potential energy = 25-27 = 8

Potential energy PE = m*g*h

8 = 3.2x9.81xh

8 = 31.392h

We divide through by the value of h to get height

8/31.392 = h

h = 0.25 metres

We solve for speed = velocity

Kinetic Energy = 1/2mv²

17 = 0.5x3.2xV²

17 = 1.6v²

V² = 17/1.6

V² = 10.625

V = √10.625

Velocity = 3.26m/s

What is the numeric value of the prefix "micro"?

a. 0.00001

c. 0.0001

d. 0.001

Answer:

Citric

Explanation:

Citric and acetic acids are naturally found in foods and can be safe to eat.

Answer:

citrus

Explanation:

i think i am sure

Charge q1=1.00 nC is at x1 = 0 and charge q2 = 3.00 nC is at x2 = 2.00 m. At a point 1.00 m away from charge q1, the electric field will be equal to zero.

This can be determined by calculating the electric field at this point, which is given by:E = (1/4πεo) x (q1/x2 - q2/x2), where εo is the electric permittivity of free space and x is the distance from charge q1.
At x = 1.00 m, E = 0.

An electric field is defined as the physical field that surrounds electrically charged particles and exerts force on all other charged particles in the field, which is either attracting or repelling them. It is also refers as the physical field for a system of charged particles.

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Answer:

When several resistors are connected in series, the total resistance equals the sum of the individual resistors. In series combination, the current is same through each resistor.

1)   V=  60 volt

Total resistance R = R₁ + R₂

                              = 20 + 10

                              = 30 Ω

2) Ohms law states that,

           \(\sf I =\dfrac{V}{R}\\\\\\I = \dfrac{60}{30}\\\\I = 2 \ A\)

3) Voltage around 10 Ω resistor,

          V₂ = I R₂

             = 2 * 10

              = 20 volt

___________________________________________________

4) Total current = 1 A

5) Total voltage = 8 volt

6) Voltage around R₁ is V₁

              R₁ = 2 Ω  ; I = 1 A

              V₁ = IR₁

                   = 1 * 2

                   = 2 volt

7) Resistance 2:

        Total resistance = R

        Total voltage = V = 8 volt

        Total current = I = 1 A

                  \(\sf R = \dfrac{V}{I}\\\\\\ R = \dfrac{8}{1}\\\\\)

                  R = 8 Ω

               R₁ + R₂ = 8 Ω

                2 + R₂ = 8

                      R₂  = 8 - 2

                      R₂ = 6 Ω

8)Voltage around R₂:

                  \(\sf V_2 = IR_2\\\\V_2 = 1*6\\\\\)

                  V₂ = 6 volt

9) Total R = 8 Ω

_________________________________________________

10) Total V = 12 volt

11)  Total R = 8 + 8

                 = 16 Ω

12) Total current I,

                \(\sf I = \dfrac{V}{R}\\\\I = \dfrac{12}{16}\\\\I = 0.75 \ A\)

13) Voltage at each resistor:

           V₁ = I*R₁

               = 0.75 * 8

               = 6 volt

         V₂ = I*R₂

              = 0.75 * 8

             = 6 volt

_______________________________________________________

     14) Total R =   40 + 20

                       = 60 Ω  

15) To find V₁, first find total voltage.

           I = 2 A ;  R = 60 Ω  

           V = IR    

              = 2 * 60

               = 120 V

        V₁ + V₂  =V

        V₁ + 80 = 120

                V₁ = 120 - 80

                 V₁ = 40 volt              

The impulse was greater in the first experiment because the egg broke.

The term impulse is defined a the product of the force and time. We know that the impulse is high when a large force acts for a short time.

From the experiment if the students, we can conclude that  the impulse was greater in the first experiment because the egg broke.

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Answer:

The impulse was the same in both experiments because the egg came to a stop.

Explanation:

test

Answer:

D

Explanation: Solve it in apex

The potential energy of crate with a mass of 180 kg at a height of 15 m will be 26460 joules.

The potential energy of a body at height 'h' above the earth surface having mass 'm' is -

E[P] = mgh

The amount of work done in moving the body to height 'h' is equal to E[P] and it is stored inside the body in the form of potential energy.

Given is a crane that raises a crate with a mass of 180 kg to a height of

15 m.

Crate's mass = [M] = 180 Kg

Height at which crate is taken = [h] = 15 m

Acceleration = [g] = + 9.8 m/s²          (by gravity)

The potential energy of the crate will be -

E[P] = mgh

Substituting values, we get -

E[P] = 180 x 9.8 x 15

E[P] = 2700 x 9.8

E[P] = 26460 joules

Therefore, the potential energy of crate with a mass of 180 kg at a height of 15 m will be 26460 joules.

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write abt gobal warmingExplanation:

Using the Newton Laws, the acceleration of the object is 2.67m/s²

Based on the problem, we can draw the diagram as below to help our understanding.

From the information provided we know that:

F = 50 N (horizontal pull)

W = 75 N

f = 30 N (friction force)

From the picture, we could focus first on the X-axis, where the horizontal force and the friction force work on the object. We would apply the second law of Newton for this axis since there is movement happening within this axis.

∑Fx = m.a

F - f = m.a

50 - 30 = m.a

m.a = 20N ... (i)

Next, we will focus on the Y-axis. In this axis neutral force and weight are working but not resulting to any movement within the axis. ence, we will be applying the first law of Newton:

∑F = 0

N - W = 0

N = W

N = 75N ... (ii)

Since we know that weight is the result of multiply between mass and gravity, we could find the mass of the object by assuming the gravity is 10m/s²

W = m.g

75 = m (10)

m = 7.5kg ... (iii)

We could subtitute the equation (iii) into equation (i) to find the acceleration of the object:

m.a = 20N

(7.5) a = 20N

a = 2.67m/s²

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Answer:

The weak nuclear force perhaps?

Explanation:

the weak nuclear force is the fundamental force responsible for the radioactive decay of particles

Answer:    

   1. The death penalty should be abolished.

   2. Human cloning should be legalized.

   3. All drugs should be legalized.

   4. Animal testing should be banned.

   5. Juveniles should be tried and treated as adults.

   6. Climate change is the greatest threat facing humanity today.

   7.  Is There Life After Death?

   8. Is Evolution or Creationism the Truth?

Explanation:

Answer:

C3H6OH + 5O3 = 5CO2 + 6H3O

Explanation:

Hi there!

To solve, we can use a summation of torques.

For the see-saw to balance, the sum of torques must equal 0, so:

∑τ = 0

Recall that:

τ = rFsinθ

r = distance from pivot (meters)

F = force (N)

In this case, the forces are the weight of the children. Also, we can leave the distance in centimeters for this type of problem, but others do require a conversion to meters.

Multiply each mass by 10 (g ≈ 10 m/s²) to get the weight:

Στ = 270(400) - x(300) = 0

270(400) = 300x

Solve for 'x', the distance in cm away from the fulcrum:

108000/300 = 360 cm