1. One light goes out, they all go out

correct answer:✅series


Voltage and current are directly related

wrong answers: no circuits and parallel

hint:More voltage from the battery pushes more current through.


resistance and current are directly related

wrong answers: all circuits and parallel

hint: If you have more resistance in a circuit, does the current go up? That's what would happen if they were directly related.


Voltage and resistance are unrelated

correct answer:✅all circuits


answer choices are series, parallel, all circuits, and no circuits


2.Which will make the electromagnet weaker?

correct answer:Unwrapping some of the coils.


3.Why do gases exert more pressure or increase their volume when the temperature is raised?

correct answer:At higher temperatures, the particles of a gas move faster. This increase in kinetic energy can increase the pressure and / or the volume of the gas.

hint: A few reminders of definitions from last semester:

Kinetic energy is the energy of motion.

Temperature is the average kinetic energy of the particles in a sample.

For a gas:

Temperature and pressure are directly related.

Temperature and volume are directly related.

Pressure and volume are inversely related.


4.Which group naturally achieves the octet rule without gaining or losing electrons?

correct answer:Noble gases


5.Label each as a physical or chemical property/change.

Shiny -✅physical

electrolyte -✅physical

highly reactive -✅chemical

In the presence of oxygen, will form carbon dioxide and water -✅chemical

maellable -✅physical

rusts -✅chemical

acid rain erodes statues and monuments -✅chemical


6.Which statement is true about the groups on the periodic table?

correct answer:The halogens have 7 valence electrons and form -1 ions.


7. Match the word to its definition.

the stuff that gets dissolved in a solution -✅solute

the stuff that does the dissolving in a solution -✅solvent

this determines the amplitude of a wave - ✅energy

the change in frequency of a wave as the object that is producing it moves towards or away from you -✅Doppler Effect

The material that a wave moves through-✅medium

Wave whose matter vibrates perpendicular to the direction the wave travels -✅ transverse

An atom of an element that has a specific number or neutrons, such as Carbon-14. -✅isotope


8.Check all true statements about the dog as it runs the obstacle course.

✅If the dog has the highest average speed, he will win the race.

✅A heavier dog will have a harder time changing direction on the course because it has more inertia than the small dog.

✅As the dog turns, his velocity changes as he changes direction.

( I got a 2.4 out of 4 on this questions, the other options were)

Whenever the dog speeds up, slows down, or changes direction, he is accelerating.

The dog's speed is constant throughout the race.

The weight of the dog will be the same if the competition was held on the moon.

If the doe can double his net force on an obstacle, his acceleration will be cut in half.

The mass of the dog will be the same if you take him to the international space station.

the wrong answer was❌The dog's velocity is constant throughout the race. because the speed and direction changed throughout, the velocity is not constant.

9.Match each atom with the correct element it represents. Make sure you are using your periodic table (Links to an external site.)
✅ Beryllium
✅ Lithium
✅ Helium
✅ Carbon
(image below is for question 9)

you produce about 20 W

Explanation:

Determine the time in which the work will be done. Here, we can take t = 60 s . Power is equal to work divided by time. In this example, P = 9000 J / 60 s = 150 W(example)

Answer:

Explanation:

To determine the power (or rate of work) produced, we can use the formula:

Power = Work / Time

Where:

Work = 140 J (joules)

Time = 7 seconds

So, we can plug in the values into the formula:

Power = 140 J / 7 s = 20 W (watts)

So, you produced 20 watts of power in 7 seconds.

It's important to note that work and power are different physical quantities. Work represents the amount of energy transferred, while power represents the rate at which that energy is transferred.

(a) When you apply a force of 40 N, the magnitude of the horizontal component of the force that the floor exerts on the block is 51 N.

(b) When you apply a force of 59 N, the magnitude of the horizontal component of the force that the floor exerts on the block is 51 N.

The horizontal component of the force that the floor exerts on the block is determined by applying Newton's second law of motion;

[tex]F = ma[/tex]

[tex]\Sigma F = 0\\\\F - F_f = 0\\\\F = F_f[/tex]

[tex]F_f = F\\\\F_f = 51 \ N[/tex]

where;

Since the surface (floor) is constant, the frictional force (horizontal component of the force that the floor exerts on the block ) will be the same on the cases.

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Based on the definition of limiting frictional force;

Force is any push or pull effect which tends to cause a change in the motion or shape of an object.

Based on Newton's third law, every force produces an equal and opposite reaction.

Therefore, the force that the floor exerts on the block is oppositely direction to the force exerted by the horizontal force acting on the block.

Since a horizontal force of 51 N applied to the block is required to keep the block moving across the floor at a constant speed, this is the limiting frictional force.

a) when a force of 40 N is applied to the block, the magnitude of the horizontal component of the force that the floor exerts on the block is equal to 40 N

b) when a force of 59 N is applied to the block, the magnitude of the horizontal component of the force that the floor exerts on the block is equal to 51 N, the limiting frictional force.

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Answer:

48.5 m/s².

Explanation:

We can use the following kinematic equation:

[tex]\displaystyle v_f = v_i + at[/tex]

Substitute in the appropriate values and solve for acceleration a:

[tex]\displaystyle \begin{aligned} (1250\text{ m/s}) & = (280\text{ m/s}) + a(20\text{ s}) \\ \\ a & = 48.5\text{ m/s$^2$} \end{aligned}[/tex]

Therefore, the acceleration of the fighter jet was 48.5 m/s².

Workdone:-

[tex]\\ \tt\longrightarrow Force\times Displacement [/tex]

[tex]\\ \tt\longrightarrow 500(100)[/tex]

[tex]\\ \tt\longrightarrow 50000J[/tex]

Answer:

chemical energy

Explanation:

hope this helps

Answer: 148348.6239 kg•m/s

Explanation: Firstly, we need to convert the 14700 N into kilograms, and to do so, use the formula net force is equal to mass times acceleration and rearrange the formula to find mass like shown below...

F = ma

F/a = m

14700/9.81 = 1498.470948 kg, this is your mass

Now that we convert it into kilograms, plug all the numbers into the variable of the momentum formula.

Momentum formula is P = mass x velocity

Like this:

P = 1498.470948 x 99

p = 148348.6239 kg•m/s.

I believe that is your answer, hope that helps you even a bit out.

Thanks.  

Answer:

B. Energy that is transformed is neither destroyed nor created.

Explanation:

Hope this helped! :)

Answer:

[tex]v = \sqrt{ \frac{2 e}{m} } [/tex]

Explanation:

[tex]e = \frac{1}{2} m {v}^{2} [/tex]

[tex]e = \frac{m {v}^{2} }{2} [/tex]

[tex]2e = m {v}^{2} [/tex]

[tex] \frac{2e}{m} = {v}^{2} [/tex]

[tex] \sqrt{ {v}^{2} } = \sqrt{} \frac{2e}{m} [/tex]

[tex]v = \sqrt{ \frac{2e}{m} } [/tex]

Answer:

A. put water in a container under the pot water will disappear from the container .

Answer:

*Good luck!

(a) The time taken for the ball to reach the height of the fence is 4.1 s.

(b) The position of the ball from the batter at the time is 111.33 m.

(c) Henry will have a home run.

The time taken for the ball to reach the height of the fence is calculated as follows;

[tex]h = v_0_y t - \frac{1}{2} gt^2\\\\(3 - 1.2) = (34 \times sin37)t - \frac{1}{2} (9.8)t^2\\\\1.8 = 20.46t- 4.9t^2\\\\4.9t^2 - 20.46t+ 1.8 = 0\\\\a = 4.9, \ b = -20.46, \ c = 1.8\\\\t = \frac{-b\pm \sqrt{b^2 - 4ac} }{2a} \\\\t = 4.1 \ s[/tex]

The position of the ball at the time is calculated as follows;

[tex]X = v_x t\\\\X = (34 \times cos37) \times 4.1\\\\X = 111.33 \ m[/tex]

Since, 111.33 m is greater than 106 m, Henry will have a home run.

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Answer:

1/2mv²=0

1/2(4kg)(v²)=0

2=-v²

square root -2=v

v=1.414

Block A of mass 1 kg and block B has a mass of 3 kg, then the blocks collide and stick together so the kinetic energy of block A is one-third of the kinetic energy of the block.

Kinetic energy is a type of power that an item or particle possesses as a result of motion. When an item undergoes work—the transfer of energy—by having subject to a net force, it accelerates and consequently obtains kinetic energy. An object in motion or particle's kinetic energy, which depends on both mass and speed, is one of its features. Any combination of motions, including translation, rotation about an axis, and vibration, may be used as the type of motion.

A body's translational kinetic energy is equal to 1/2mv², or one-half of the sum of its mass, m, and the square of its velocity, v.

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The horizontal force needed to keep the same box sliding on the same horizontal floor at a given constant speed is 45 N.

The horizontal force needed to keep the same box sliding on the same horizontal floor at a given constant speed is calculated as follows;

[tex]F= \frac{mv}{t} \\\\mv = Ft\\\\m = \frac{Ft}{v} \\\\\frac{F_1}{v_1} = \frac{F_2}{v_2}[/tex]

where;

[tex]F_2 = \frac{F_1v_2}{v_1} \\\\F_2 = \frac{15 \times 1.5}{0.5} \\\\F_2 = 45 \ N[/tex]

Thus, the horizontal force needed to keep the same box sliding on the same horizontal floor at a given constant speed is 45 N.

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Maths :

The length between 2 points.

Physics =

Distance = speed × time

Distance is defined as the space between two points in space.

Distance is defined as the space between two points in space.

The unit of distance is metres or kilometres.

Distance can be measured directly usind instruments such as metre rule and tape rule.

The formula for calculating distance is given below:

Distnce = velocity × time.

Therefore, distance is defined as the space between two points in space.

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final speed will be 25.98 m/s Explanation Force applied by the engine on the car is  We have to find final speed of the car after travelling 300 m , so displacement of car is given as  so wor done by the engines on the car

Answer:

[tex]F=ma \\ 900 = 1200a \\ a = \frac{3}{4} m. {s}^{ - 2} \\ {v}^{2} = {u}^{2} +2 as \\ {v}^{2} = {(15)}^{2} + 2( \frac{3}{4} )(300) \\ = 675 \\ v = \sqrt{675} \: m. {s}^{ - 1} [/tex]

Answer:

the water will float over mercury and the steel ball will be in it's respected place

Answer:

The acceleration of an item is proportional to the net force exerted on it and inversely proportional to its mass. When the force pushing on an item rises, so does the object's acceleration. The acceleration of an item decreases as the mass of the thing increases.

If the force on an object remains constant, increasing mass will decrease acceleration. In other words, force and acceleration are directly proportional, while mass and acceleration are inversely proportional. ( How Newton's Laws of Motion Work" 29 July 2008.)

If the mass of an object is held constant, increasing force will increase acceleration. If the force on an object remains constant, increasing mass will decrease acceleration.

This net force is the resultant force of all forces acting on the body at any given instant. The larger the magnitude of this net force, the larger the acceleration of the body. One of the definitions of mass is the resistance of a body to motion in general and acceleration in particular due to the application of force.

Explanation:

Answer:

C, D, and E

Explanation:

Answer:it’s C, D, E

Explanation:

The distance travelled by the hockey puck, given that 60 J of work was done by an applied force of 5 N is 12 meters

We know already that work is the product of force and distance moved in the direction of the force:

Work done (Wd) = force (F) × distance (d)

Using the above formula, we can determine the distance travelled by the hockey puck. Details below:

Work done (Wd) = force (F) × distance (d)

60 = 5 × distance travelled

Divide both sides by 5

Distance travelled = 60 / 5

Distance travelled = 12 meters

Thus, from the above calculation, we can conclude that the distance travelled is 12 meters

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Answer:

A lunar eclipse occurs when the Moon enters the Earth’s shadow. A solar eclipse occurs when the Moon’s shadow falls on the Earth. They do not happen every month because the Earth’s orbit around the sun is not in the same plane as the Moon’s orbit around the Earth.

Explanation:

Coulomb force

[tex]\tt F=k\dfrac{q_1.q_2}{r^2}[/tex]

F = coulomb force (N)

Q1,Q2 = the charge (C)

r = distance between two charges (m)

k = constant = 9.10⁹ Nm² / C²

Input the value:

[tex]\tt F=9.10^9\dfrac{0.00368\times 0.00059}{0.4^2}=122130~N[/tex]

Answer:

im pretty sure its D

Explanation:

Answer:

D

Explanation:

Heat will flow from object B to object A

l will help and if you get it correctly I will say you are welcome

Answer:

0.0519480519 A

Explanation:

First find equivalent resistance:

R series = R1 + R2 + R3 ...

[tex]R_{eq} = 160+100+82+120=462ohms[/tex]

Now calculate current:

V = IR

[tex]I = \frac{V}{R}[/tex]

[tex]I= \frac{24}{462} = 0.0519480519 A[/tex]

Answer:

a variable (often denoted by x) whose variation does not depend on that of another.

Explanation:

Answer:

100kg

Explanation:

Total force =400N+600N=1000N

As we have,

F=m×g

1000N=m×10m/s²

1000N÷10m/s²=m

m=100kg

The charge on the capacitor 2 (C₂) is 48μF.

In the circuit diagram, C₁ and C₂ are in series connection, while C₃ is parallel to C₁ and C₂.

[tex]Q_1 = Q_2 = Q\\\\V = \frac{Q}{C_1} + \frac{Q}{C_2} \\\\V = Q(\frac{1}{C_1} + \frac{1}{C_2} )\\\\Q = V (\frac{C_1C_2}{C_1 + C_2} )\\\\Q = 24 \times (\frac{6 \times 10^{-6} \times 3 \times 10^{-6}}{6\times 10^{-6} \ + \ 3 \times 10^{-6}} )\\\\Q = \frac{4.32 \times 10^{-10}}{9\times 10^{-6}} \\\\Q = 48 \ \mu C[/tex]

Thus, the charge on the capacitor 2 (C₂) is 48μF.

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