light waves from the sun can travel trough outer space and reach the earth

Answer:

10 million joules or 10,000 KJ

Explanation:

Work= Force x Displacement

convert 5km into meters -5km=5000m

W= 2000N x 5000m

w=10,000,000 Joules

or 10,000KJ

An urgent need to fix a significant car issue is indicated by a red dashboard alert light. It enables drivers to look behind them for oncoming traffic, leaky fluids, and low or flat-tyres.

Typically, dashboard warning lights come in red and orange. A major problem with your car is typically indicated by a red warning light. If the warning light on your dashboard is red, you should act right away since it can be a sign that your engine is overheating, that your oil pressure is low, or that your brakes need to be repaired. When a red system warning light appears while you are driving, you should pull over as soon as you can in a secure location to look into the issue before determining what to do.

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The main reason why wheelchair ramps are used to move people up a staircase is because it has a high mechanical advantage which leads to a greater efficiency in moving people up the staircase.

The mechanical advantage of the ramp is calculated as follows;

\(M.A = \frac{L}{h}\)

As the length of the ramp increases, people will be move up to a greater distance up the staircase.

Thus, the main reason why wheelchair ramps are used to move people up a staircase is because it has a high mechanical advantage which leads to a greater efficiency in moving people up the staircase.

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Answer:

Heat capacity, Q = 781.74 Joules

Explanation:

Given the following data;

Mass = 12g

Initial temperature = 28.3°C

Final temperature = 43.87°C

Specific heat capacity of water = 4.184J/g°C

To find the quantity of heat needed?

Heat capacity is given by the formula;

\( Q = mcdt \)

Where;

Q represents the heat capacity or quantity of heat.

m represents the mass of an object.

c represents the specific heat capacity of water.

dt represents the change in temperature.

dt = T2 - T1

dt = 43.87 - 28.3

dt = 15.57°C

Substituting into the equation, we have;

\( Q = 12*4.184*15.57 \)

Q = 781.74 Joules

The heat that should be needed is Q = 781.74 Joules.

Heat capacity should be

= mcdt

Where;

Q represents the heat capacity or quantity of heat.

m represents the mass of an object.  

c represents the specific heat capacity of water.  

dt represents the change in temperature.

Now

dt = T2 - T1

= 43.87 - 28.3

= 15.57°C

Now

\(= 12\times 4.184 \times 15.57\)

= 781.74 joules

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Answer:Potential energy can transfer into other forms of energy like kinetic energy. Kinetic energy is energy an object has because of its motion. ... If released, as the ball moves faster and faster toward the ground, the force of gravity will transfer the potential energy to kinetic energy

Explanation:

1)The strength of the magnetic field for particle 1 will be 2.8 T.

2)The magnitude of the magnetic force exerted on the particle will be 0.12 N.

It is the type of field where the magnetic force is obtained. With the help of a magnetic field. The magnetic force is obtained it is the field felt around a moving electric charge.

The given data in the problem is;

q₁ has a charge = 2.7 μc

v₁ is the velocity of particle 1 = 1 773 m/s.

F is magnetic force = 5.75 × 10–3 n,

q₂ has a charge of 42.0 μc

v₂ is the velocity of 1.21 × 103 m/s.

\(\rm F_{B2}\)   is the magnitude of the magnetic force exerted on particle 2=?

The megnetic force for case 1 is found as;

\(\rm F_{B1}= qvB SIN \alpha_1 \\\\ 5.75 \times 10^{-3} =2.7 \times 10^{-6}\times 773 \times B sin 90^0 \\\\ B=\frac{5.75 \times 10^{-3}}{2.7 \times 10^{-6} \timesd 773 \times sin 90^0} \\\\ B=2.8 \ T\)

The megnetic force for case 2 is found as;

\(\rm F_{B2} = q_2v_2bsin \alpha_2 \\\\ 42\times 10^{-6} \times 1.21 \times 10^3 \times 2.8 \times sin 55^0 \\\\ F_{B2}=0.12 T\)

Hence the value of the megnetic force exerted on particle 2 will be 0.00122 T.

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Answer:

last one and second one

Explanation:

Particle q1 has a charge of 2.7 μC and a velocity of 773 m/s. If it experiences a magnetic force of 5.75 × 10–3 N, what is the strength of the magnetic field?

2.8

T

In the same magnetic field, particle q2 has a charge of 42.0 μC and a velocity of 1.21 × 103 m/s. What is the magnitude of the magnetic force exerted on particle 2?

0.12

N

If the guy on the left starts to pull on the pole, they will meet in the middle since the pole is massless and the surface is frictionless.

If the two guys are holding onto a massless pole and standing on horizontal frictionless ice, then there is no net external force acting on the system, and the center of mass of the system will remain stationary. When the guy on the left starts to pull on the pole, he exerts a force on the pole to the left. According to Newton's third law, the pole exerts an equal and opposite force on the guy to the right, causing him to move to the right.

The position where they will meet depends on the magnitudes of the forces that the guy on the left exerts on the pole and the distance between the two guys. If we assume that the guys initially hold the pole at its center of mass, then we can use the principle of conservation of momentum to determine where they will meet.

Since the center of mass remains stationary, the initial momentum of the system is zero. After the guy on the left starts pulling, the system gains a net momentum to the left equal to the force that he exerts on the pole multiplied by the time that he pulls. In order to conserve momentum, the guy on the right must move an equal distance to the right.

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We have that for the Question "Describe what a high and low frequency electromagnetic wave look like:" it can be said that

From the question we are told

Describe what a high and low frequency electromagnetic wave look like:

Generally the equation for the frequency  is mathematically given as

\(f=\frac{1}{t}\\\\and\\\\f=\frac{v}{\lambda}\\\\\)

Therefore

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Since an ammeter is meant to measure current and is a low resistance device, it is always connected in series with the circuit element through which current is to be measured.

Current of a system is defined as the rate at which the electrons flow from a given point in the absolute electrical circuit.

a. Since, Current in two or more components connected in series is always the same. So circuit (a) will be used.

b. As per manufacturer's claim, resistance of bulb r = V /I.

= 12 /6 = 2 Ω.

Total resistance in circuit a,  R = 2 +0.1 = 2.1 A

Ammeter reading I' = V /R

= 12 /2.1 = 5.71 A

Which is close enough to claimed value of 6 A.

c. Now the bulb and ammeter are connected in parallel, so the voltage across both will be the same.

Current through ammeter I' = V /Ra = 12 /0.1 = 120 A

Which is 20 times greater than claimed value.

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The question is incomplete, but most probably the complete question is,

The manufacturer of a 12V car headlight specifies it will draw a current of 6A. You would like to check this claim with an ammeter designed to measure currents up to 10Aand having a resistance of 0.1 Ohms.

a)Which of the two figures represents a circuit where the ammeter correctly measures the current in the headlight?

b) How much current (in A) would flow in the ammeter for Circuit a?

c) How much current (in A) flows through the ammeter for Circuit b?

With the below stated fact  I think that  the pros of using synthetic materials outweighs the cons.

Before we answer the question

If the pros of using synthetic materials outweigh the cons or otherwise, let us first establish the what a synthetic material is and its pros and cons

Synthetic material

Synthetic material is a material in which a substances are changed chemically to produce a material with different characteristics.

Types of Synthetic material

Pros of Synthetic materials

Cons of Synthetic materials

In conclusion

Although Synthetic materials has so very pressing disadvantages to human kind it is unrefusable the importance of Synthetic materials to the day to day live of all humans

Therefore, I think that  the pros of using synthetic materials outweighs the cons

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Answer:

calla gringo de mierda

Explanation:

Answer:

I would assume that the box slows down due to the frictional force between the floor and the box. In addition, the frictional force points opposite of the boxes motion. As we know, the box was given an initial speed, therefore, having an applied force. Hence, we can conclude that  the frictional force opposing the motion of the crate is equal to the applied force but acting in the opposite direction. This frictional force is called static friction. When we increase the applied force (push harder), the frictional force will also increase until it reaches a maximum value.

Hope that helps!

Answer:

B

Explanation:

because. it reduces the distance between the earth

The moment of inertia of the flywheel is approximately 0.0337 kg·m^2.

To solve this problem, we can use the formula for rotational kinetic energy:

KE = (1/2) I ω²

where KE is the kinetic energy of the flywheel, I is its moment of inertia, and ω is its angular velocity.

We can first convert the angular velocity from revolutions per minute (rpm) to radians per second (rad/s):

ω = (11000 rpm) * (2π rad/rev) * (1 min/60 s) = 1146.13 rad/s

Next, we can plug in the values for KE and ω and solve for I:

KE = 4.9 MJ = 4.9 × 10⁶ J

ω = 1146.13 rad/s

(1/2) I ω² = KE

(1/2) I (1146.13 rad/s)² = 4.9 × 10⁶ J

I = (2 * 4.9 × 10⁶J) / (1146.13 rad/s)²

I = 0.0337 kg·m²

Therefore, the moment of inertia of the flywheel is approximately 0.0337 kg·m².

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Answer:4

Explanation:

on edge 2020

Answer:

your photo is not clear

The time taken by the block B to travel 80.0 cm is 0.639 sec. the block is attached on the horizontal table.

Mass is defined as the amount of matter a body contains. Inertia, or the body's resistance to acceleration when a net force is applied, is also measured by this term.

It can also be defined as a measurement of the fundamental attribute of all stuff, inertia.

∑Fx = Ft = MaQa

∑Fy = Ft - MbG = MbQb

Ft = 2 x 9.81 + MbQb

3 Qa = 2Qb + 19.62

Since Qb = Qa

5 Qa = 19.62

Qa = 3.924 m/s²

From

d = di + Vit + 1/2 Qt²

0.8 = 0 + 1/2 x 3.924 x t²

t = 0.6395 sec

Thus, the time taken by the block B to travel 80.0 cm is 0.639 sec. the block is attached on the horizontal table.

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c) both direct and alternating current

Because Ampere's Law, a magnetic field is produced whenever an electrical charge is in motion. So, both kind of currents produces a magnetic field when electrical current is flowing through a wire.

The total displacement of the vectors is 2 km south.

Distance is the total path that an object in motion has traveled. Displacement is a verb that denotes the movement or displacement of an object.

Here, the vector moves 4 km towards the south, then moves 2 km north. The vector again moves 5 km south and moves 5 km north. Draw the diagram, mentioning the  4 km south movement by the black arrow, the 2 km north movement by the blue arrow, the 5 km south movement by the orange arrow, and the 5km north movement by the green arrow.

Also, mark the starting and ending points. These points give the displacement of the diagram. From the diagram, we can tell, the displacement is 2 km south of the starting point.

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Answer:

Neutrons have no charge

Explanation:

Answer:

Neutrons don't have a charge....

Explanation:

Hope this helped!!!

The flow of heat will stop when thermal equilibrium is reached between the meta cup and the water tank.

The flow of heat will stop when the temperature of the water inside the metal cup and the water in the tank reaches thermal equilibrium, meaning they are at the same temperature.

To calculate the time it takes for the two to reach thermal equilibrium, we can use Newton's Law of Cooling:

Q = hAΔT

Assuming the heat transfer coefficient is constant, we can write:

Q1 = Q2

hA1ΔT1 = hA2ΔT2

We can simplify this equation by assuming that the surface area of the metal cup is much smaller than the surface area of the tank of water, so A1 << A2.

This gives us:

hA1ΔT1 = 0

since ΔT2 = 0 when the two are in thermal equilibrium.

Solving for ΔT1:

ΔT1 = 0 / (hA1)

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Answer: A

Explanation: the tilted axis’s allows the sun to hit areas with different amount of radiation therefore leading to seasons

Answer:

A because the side that is closer is hotter than normal and the same thing on the other side as well. It will be colder.

Explanation:

When the switch is closed, in the third circuit the resistance would be the highest and the current be the lowest.

From the question, we have

Voltage in the circuit, V = 1.5 volts,

The circuit's resistance, R = 50,

In the third diagram, the bulb is connected in parallel, which means that the voltage in the circuit will remain constant. Additionally, because the current depends on the resistor, the resistance in this circuit will be larger.

Additionally, according to Ohm's law, a high resistance will result in a low current flow.

Since there is only one bulb in the first circuit, resistance will be minimal and current flow will be high.

As a result, the third circuit's resistance would be the highest and its current the lowest when the switch is closed.

Current :

The phrase "electric current" is frequently used to describe how much electricity flows through a circuit and how it flows in an electronic circuit. Amperes are used to measure it (A). As more electricity passes through the circuit, the ampere value increases.

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When the switch is closed, in the third circuit the resistance would be the highest and the current be the lowest.

What is current?

When describing how much electricity flows through a circuit and how it flows in an electronic circuit, the term "electric current" is often employed. It is measured in amperes (A). The ampere number rises as more electricity flows through the circuit.

Given:

The Voltage in the circuit, V = 1.5 volts,

The resistance in the circuit, R = 50 Ω,

As you can see in the third diagram, there is a parallel connection of the bulb, so the voltage in the circuit will remain the same and the current depends on the resistor, so there will be higher resistance in this circuit.

And if the resistance is high the current flow will be low, (By Ohm's law)

In the first circuit, there is only one bulb, so resistance will be low, and the current flow will be high.

Therefore, when the switch is closed, in the third circuit the resistance would be the highest and the current be the lowest.

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A compass will line up to b) Parallel to magnetic field lines, with the north pole pointing in the direction of the field.

The magnetic influence on moving electric charges, electric currents, and magnetic materials is described by a magnetic field, which is a vector field. A force perpendicular to the charge's own velocity and the magnetic field acts on it when the charge is traveling through a magnetic field.

The magnetic field of a permanent magnet pulls on ferromagnetic substances like iron and attracts or repels other magnets. Paramagnetism, diamagnetism, and antiferromagnetism are three additional magnetic effects that a nonuniform magnetic field can have on "nonmagnetic" materials, albeit these forces are often so minute that they can only be detected by laboratory equipment.

Therefore, A compass will line up to b) Parallel to magnetic field lines, with the north pole pointing in the direction of the field.

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Answer:

Explanation:

H

Answer:

20 steps is his displacement

The given statement is true. People who have color vision deficiency typically lack one or more of the three cones that are sensitive to a particular wavelength.

The incapacity to determine the exact shades of color is known as color vision insufficiency. This optical disorder is also referred to as "color blindness," however only a few people are actually color blind.

The sensitivity of color-blind people towards a particular wavelength is high. They are more sensitive to a particular wavelength.

So People who have color vision deficiency typically lack one or more of the three cones that are sensitive to a particular wavelength.

Hence the statement is true.

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Answer:

The momentum of the van before the collision can be calculated as:

momentum = mass x velocity

momentum = 1200 kg x 8 m/s

momentum = 9600 kg⋅m/s

Therefore, the momentum of the van before the collision was 9600 kg⋅m/s.

After the collision, the van came to a stop, which means its final velocity was 0 m/s. The momentum of the van after the collision is:

momentum = mass x velocity

momentum = 1200 kg x 0 m/s

momentum = 0 kg⋅m/s

Therefore, the momentum of the van after the collision was 0 kg⋅m/s.

The change in momentum of the van can be calculated as:

change in momentum = final momentum - initial momentum

change in momentum = 0 kg⋅m/s - 9600 kg⋅m/s

change in momentum = -9600 kg⋅m/s

Therefore, the change in momentum of the van was -9600 kg⋅m/s.

The force that acted on each driver can be calculated using the formula:

force = change in momentum/time

force = (-9600 kg⋅m/s) / (0.3 s)

force = -32000 N

The negative sign indicates that the force acted in the opposite direction to the motion of the van.

Therefore, the force that acted on each driver was 32000 N.

Explanation: