A car is driving down a road at a constant velocity of 15 m/s. How much time will it take the car to travel 40 m?

First find time taken to reach submarine

\(\\ \bull\tt\dashrightarrow t=\dfrac{80}{2}=40s\)

\(\\ \bull\tt\dashrightarrow Distance=Velocity \times Time\)

\(\\ \bull\tt\dashrightarrow Distance=1460(40)\)

\(\\ \bull\tt\dashrightarrow Distance=58400m\)

\(\\ \bull\tt\dashrightarrow Distance=58.4km\)

Answer:

116800 meters away i think:)

Explanation:

B is the correct response. Bill, Chet, Sara, and Mika

The rate at which work is completed is power. It's the ratio of work to time. The equation that follows can be used to calculate it mathematically. The Watt is the most common metric power unit.

By gradually overloading your climbing distance, you can significantly increase your power output. For instance, start with hilly rides that have 1,000 feet of climbing and gradually increase the distance until you can climb 3,000 feet in one ride.

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Answer:

C. it will increase in speed

Explanation:

brainliest please? :))

The marshmallow shrunk as a result of the increased pressure's effect on the molecules' tendency to cluster together (option b).

Between pressure and stress, there are several distinctions. Although both of these words are frequently used interchangeably. Generally speaking, the force applied per unit area can be used to quantify pressure. The amount of force applied per unit area that a material experiences is referred to as stress, on the other hand.

When we feel compelled and intimidated, we tend to react in a worried manner. It typically takes place when we are faced with a circumstance that we don't feel in control of or can manage. whenever we are under stress, such as when we are trying to balance a lot of obligations.

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Answer:

A circuit breaker is a switching mechanism that interrupts the current that is irregular or fault. It is a mechanical system that interferes with high magnitude (fault) current flow and also performs a transfer operation. Hope this helps :)

Explanation:

Answer:

A circuit breaker is an electrical switch designed to protect an electrical circuit from damage caused by an overcurrent or short circuit.

Explanation:

Its basic function is to interrupt current flow after protective relays detect a fault.

Answer:

0.625m

Explanation:

Now Velocity of a wave ,V = frequency × wavelength

Wavelength =velocity /frequency

=500/800 =0.625m

Answer:the answer is A. Wires, a 9v battery, no resistors

Explanation:

A wire with battery of the voltage of 9 volts with no resistor has the highest value of current. The ampere is the SI unit for electric current.

The pace at which electrons travel through a conductor is known as electric current. Electrons are tiny particles that reside within a substance's molecular structure.

Ohm's law claims that the voltage across a conductor is directly proportional to the current flowing through it.

The Equation of Ohm's Law

V=IR

If there is no resistor, the resistance in the circuit is zero, results in the highest value of  electric current.

Voltage is directly proportional to the current. As high the value of voltage, the value of the electric current is high.

Hence, a wire with battery of the voltage of 9 volts with no resistor has the highest value of current.

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Mbandaka is located close to the equator, at a latitude of approximately 0.05 degrees north. Its proximity to the equator means that it experiences a consistently high amount of solar radiation throughout the year, with only small seasonal variations.

Solar radiation refers to the energy emitted by the Sun in the form of electromagnetic waves. It is the primary source of energy that drives the Earth's climate and supports life on our planet. The Sun's radiation includes a range of wavelengths, from ultraviolet to visible light to infrared, and it is responsible for warming the Earth's surface, oceans, and atmosphere.

Solar radiation is essential for many processes on Earth, such as photosynthesis in plants, the water cycle, and the formation of weather patterns. However, excessive exposure to solar radiation can also have harmful effects on human health, such as sunburn, skin cancer, and eye damage. Scientists study solar radiation to better understand its effects on the Earth's climate and to develop technologies that can harness this energy for human use.

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Complete Question:

How does Mbandaka's latitude account for it's very small annual temperature range?

The Musculoskeletal system is typically assessed from head to toe and from general to specific. It is option A.

Deformities, side-to-side differences in symmetrical comparison, limitations in movement, and skin changes like rashes, ecchymosis, erythema, and edema will all be looked for in a musculoskeletal system assessment.

They help you move, maintain your posture, and support the weight of your body when used together.

For human health, the musculoskeletal system is very important. The musculoskeletal system not only provides the body with movement and structure, but it also serves as an exercise-stimulated endocrine system. It additionally cooperates with different organs in the body through biochemical flagging.

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The time of flight is obtained as 25.9 seconds

The time of flight is the time taken to move the object that have been projected along the parabolic path. In this case, we have a cannonball that have been fired  from level ground with a velocity of 240.0 m/s at an angle of 32 degrees.

We know that from the question

T = 2usinθ/g

T = time of flight

u = initial velocity

θ = angle of projection

g = acceleration

T = 2 * 240.0 m/s * sin 32 degrees/9.8 m/s^2

T = 25.9 seconds

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We have found the magnitude of the magnetic field in the separator, the current of the desired ions in the machine, and the thermal energy produced in the cup in 1.31 hours.

(a) To find the magnitude of the magnetic field in the separator, we can use the centripetal force equation. The centripetal force is equal to the magnetic force acting on the ions.

The centripetal force is given by F = mv²/r, where m is the mass of the ions, v is the velocity of the ions, and r is the radius of the path.

The magnetic force is given by F = qvB, where q is the charge of the ions, v is the velocity of the ions, and B is the magnetic field.

Setting the two forces equal to each other and solving for B, we get:

mv²/r = qvB
B = mv/rq

Substituting the given values, we have:

m = 3.92 x 10⁻²⁵ kg
v = √(2qV/m), where V is the potential difference and q is the charge
r = 1.31 m
q = 3.20 x 10⁻¹⁹ C

Using these values, we can calculate the magnetic field magnitude in the separator.

(b) To calculate the current of the desired ions in the machine, we need to find the number of ions passing through the slit per second.

First, we need to find the velocity of the ions using the kinetic energy equation: KE = 1/2 mv². Rearranging the equation, we get v = √(2KE/m), where KE is the kinetic energy.

Given that 1.12 mg of material is separated per hour, we can convert it to kg/s: 1.12 mg/s = 1.12 x 10⁻⁶ kg/s.

Using the kinetic energy equation and the mass, we can find the velocity.

Finally, the current is given by I = nqv, where n is the number of ions per second passing through the slit.

(c) To find the thermal energy produced in the cup, we can use the formula E = mcΔT, where E is the thermal energy, m is the mass of the material collected, c is the specific heat capacity, and ΔT is the change in temperature.

Given that the time is 1.31 hours and the mass is 1.12 mg, we can convert the mass to kg and calculate the thermal energy.

we have found the magnitude of the magnetic field in the separator, the current of the desired ions in the machine, and the thermal energy produced in the cup in 1.31 hours.

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Answer:

Waves move through different vmaterials

A:  Waves travel at different speeds through different materials.

Answer:

b

Explanation:

Sealants are used in only about 30% of low-income children.

Dental sealants are thin, plastic coatings that are applied to the chewing surfaces of molars and premolars to prevent tooth decay. They are a highly effective preventive measure, but are often underutilized, especially among low-income children. According to the Centers for Disease Control and Prevention (CDC), sealants are used in only about 30% of low-income children. This is a concern because low-income children are at higher risk for tooth decay and may not have access to regular dental care. Increasing the use of dental sealants among this population could help improve their oral health outcomes.

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Answer: The resistance attached to the battery =  0.117 Ω

Explanation:

We know that I = Q/t .....(i)

where, I ⇒ Current

Q ⇒ Charge flowing

t ⇒ Time taken

Now, as we know from Ohm's law,

V = IR

or, R = V/I ....(ii)

where, R ⇒ Resistance

V ⇒ Voltage difference

I ⇒ Current

Putting the value of I from equation (i) in equation (ii),

R = V / (Q/t)  ....(iii)

Now as per the question,

Voltage of battery,  V = 9.00 Volt

Charge flow, Q = 1.38 Coulomb

Time, t = 11.8 seconds

Putting values in equation (iii)

R = 9/(1.38/11.8)

R = 0.117 Ω

Therefore, the resistance attached to the battery =  0.117 Ω

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Answer:

Explanation: If a net force of 50 N pulls on a 10 kg object, how much acceleration will it cause? Then an answer is possible. Equation: Net force = mass * acceleration.

Power can be defined in physics as the rate at which the body uses energy to perform useful work.

power is the time rate of doing work or delivering energy in science and engineering. It is expressed as the amount of energy transferred or work done divided by the time interval t—or W/t.

Power can be defined as the amount of work done in a unit of time at a given rate. The joules per second (J/s) unit of power in the SI is the Watt (W). Horsepower (hp), which roughly equates to 745.7 watts, is sometimes used to describe a machine's or vehicle's power.

It is described mathematically as:

P=Wt, where W denotes finished work and t denotes time.

P=I2R is yet another formula for electrical power.

I am current, and R is here.

In copper cable, the current is: The power loss per unit of length is: I = 300 A. Pl=2W/m.

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Number οf phοtοns per cubic millimeter = Number οf phοtοns / (Vοlume in cubic millimetres)

Tο find the physical length οf the pulse as it travels thrοugh space, we can use the equatiοn:

Length = (Speed οf light) x (Time)

(a) First, let's cοnvert the pulse duratiοn frοm picοsecοnds (ps) tο secοnds (s):

14.0 ps = 14.0 × \(10^{(-12)} s\)

The speed οf light is apprοximately 3 × \(10^8\) m/s, but we need tο cοnvert it tο the apprοpriate units tο match the pulse duratiοn. Sο, the speed οf light in picοmeters per secοnd (pm/s) is:

3 × \(10^8\) m/s = 3 × \(10^{14\) pm/s

Nοw we can calculate the length οf the pulse:

Length = (3 × \(10^{14\) pm/s) × (14.0 ×\(10^{(-12)} s\) )

(b) Tο find the number οf phοtοns in the pulse, we can use the equatiοn:

Energy οf the pulse = Number οf phοtοns × Energy per phοtοn

Given that the energy οf the pulse is 3.00 J and the wavelength οf the laser is 694.3 nm, we can calculate the energy per phοtοn using the equatiοn:

Energy per phοtοn = (Planck's cοnstant) × (Speed οf light) / (Wavelength)

Planck's cοnstant is apprοximately 6.626 × \(10^{(-34)\) J·s.

Nοw we can calculate the energy per phοtοn:

Energy per phοtοn = (6.626 × \(10^{(-34)\) J·s) × (3 × \(10^8\) m/s) / (694.3 × \(10^{(-9)\)m)

The number οf phοtοns in the pulse can be fοund by rearranging the equatiοn:

Number οf phοtοns = Energy οf the pulse / Energy per phοtοn

(c) Tο find the number οf phοtοns per cubic millimeter, we need tο knοw the vοlume οf the beam. The vοlume οf a cylinder is given by the equatiοn:

Vοlume = π × (Radius)² × Length

The radius οf the circular crοss sectiοn is half the diameter, sο it is 0.300 cm (οr 0.003 m).

The number οf phοtοns per cubic millimeter can be calculated by dividing the number οf phοtοns by the vοlume οf the beam in cubic millimeters:

Number οf phοtοns per cubic millimetre = Number οf phοtοns / (Vοlume in cubic millimeters)

Let's calculate the results:

(a) The physical length οf the pulse:

Length = (3 × \(10^{14\) pm/s) × (14.0 × \(10^{(-12)\) s)

(b) The number οf phοtοns in the pulse:

Energy per phοtοn = (6.626 × \(10^{(-34)\) J·s) × (3 × \(10^8\) m/s) / (694.3 ×\(10^{(-9)\)m)

Number οf phοtοns = Energy οf the pulse / Energy per phοtοn

(c) The number οf phοtοns per cubic millimeter:

Vοlume = π × (0.003 m)² × Length

Number οf phοtοns per cubic millimetre = Number οf phοtοns / (Vοlume in cubic millimetres)

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The average angular acceleration of the wheel that rotates through an angle of 13.8 rad is -10.93 rad/s².

This can be defined as the rate of change of angular speed.

To calculate the magnitude of the average angular acceleration of the wheel, we use the formula below.

Formula:

Where:

From the question,

Given:

Substitute these valus into equation 1

Hence, the average angular acceleration of the wheel is -10.93 rad/s².

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State of matter is conserved in chemical reactions but not in nuclear reactions.

In a nuclear reaction, mass is not conserved because of the release of radiation. The difference in masses of reactants and product nuclei, occurs due to release of energy.

So we can conclude that State of matter is conserved in chemical reactions but not in nuclear reactions.

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Nuclear and chemical processes are both possible in the matter. In chemical processes, the property of no atoms is conserved, but not in nuclear reactions. Option C is correct.

The process by which two or more tiny nuclei unite to generate a bigger nucleus is known as a nuclear fusion reaction.

The more energy it takes to liberate an electron from a smaller atom. This is referred to as binding energy.

In the nuclear reaction, one atom gets disassociated with the other atom. The process is known as nuclear fission.

Nuclear and chemical processes are both possible in the matter. In chemical processes, the property of no atoms is conserved, but not in nuclear reactions.

Hence, option C is correct.

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Electron flow out of the negative terminal, through the circuit and into the positive terminal of the source is accurate about Electron flow.

Electron flow is the current produced by the movement of free electrons moving along a positive terminal; the direction of electron flow is opposite to that of current.

Electron flow out of the negative terminal, through the circuit and into the positive terminal of the source.

Therefore, Electron flow out of the negative terminal, through the circuit and into the positive terminal of the source is accurate about Electron flow.

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Answer: A Neutron.

I know this is correct. Thank's and yw :3

Given:

To find:

Fill in the blanks

Explanation:

1) Energy can undergo conversion, changing from one form to another. For example, a wind turbine converts the mechanical energy of the wind into electric energy in the power grid. This power grid can then be converted into thermal energy by an electric heater.

2) Solar panels generate electrical energy by taking radiant energy from the sun and having it undergo conversion. This process does obey the law of conservation of energy because energy isn't randomly created, but it is simply converted.

The five points (all from science) to back the second premise up (The universe began to exist) are:

Einstein's theory of General Relativity

Galaxy seeds

Second Law of Thermodynamics

Expanding universe

Radiation echo

What is thermodynamics?

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