Emily roller skates with a constant speed
of 8 miles per hour. How far can she travel
in 3 hours? D = SxT

An object that is a good radiator of electromagnetic waves is also a good absorber of electromagnetic energy.

Electromagnetic waves are a type of radiation that travels through space in the form of a transverse wave.

These waves are made up of two primary components: electric fields and magnetic fields.

They're also known as light waves.

An electromagnetic wave's properties are determined by its frequency and wavelength.

Electromagnetic waves with longer wavelengths have lower frequencies, whereas those with shorter wavelengths have higher frequencies.

An object that is a good radiator of electromagnetic waves is also a good absorber of electromagnetic energy.

The amount of energy an object absorbs or radiates is determined by a number of factors, including its temperature, surface area, and composition.

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Answer:

15.71 m/s

Explanation:

We are given;

Time; t = 0.2 s

Radius; r = 0.5 m

The circumference will give us the distance covered.

Formula for circumference is 2πr

Thus; Distance = 2πr = 2 × π × 0.5 = π

Linear speed = distance/time = π/0.2 = 15.71 m/s

Answer:

a = 0.8 [m/s²]

Explanation:

To solve this problem we must use Newton's second law which tells us that the resulting force on a body is equal to the product of mass by acceleration, in this way we come to the following equation:

∑F = m*a

where:

F = forces applied [N]

m = mass = 1000 [kg]

a = acceleration [m/s²]

Now using Newton's second law.

\(1200 - 400 = 1000*a\\800 = 1000 *a\\a=0.8[m/s^{2} ]\)

Answer:

what

Explanation:

(a) The depth of the chasm can be calculated using the equation: depth = (speed of sound) × (time elapsed) / 2.

Given that the speed of sound in air is 343 m/s and the time elapsed is 3.16 s, we can calculate the depth as follows:

depth = (343 m/s) × (3.16 s) / 2 ≈ 542.476 m.

Therefore, the depth of the chasm is approximately 542.476 m.

(b) To calculate the percentage of error resulting from assuming the speed of sound is infinite, we can compare the actual time taken with the assumed time if the speed of sound were infinite.

The assumed time, t_assumed, would be equal to the depth of the chasm divided by the assumed infinite speed of sound (which is not a physical value). Let's denote the depth as d and the actual time taken as t_actual.

t_assumed = d / (speed of sound assumed infinite)

The percentage of error, %error, can be calculated using the formula:

%error = (|t_assumed - t_actual| / t_actual) × 100.

In this case, t_actual is 3.16 s as given.

Assuming the speed of sound is infinite, we have:

t_assumed = d / (speed of sound assumed infinite) = d / ∞ = 0.

Hence, the percentage of error would be:

%error = (|0 - 3.16| / 3.16) × 100 ≈ 100%.

Therefore, assuming the speed of sound is infinite would result in a 100% error in calculating the time and consequently the depth of the chasm.

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To determine the depth of the chasm, we use the equation v = d/t. The depth of the chasm is calculated to be 1084.48 meters. It is not possible to calculate the percentage of error when assuming the speed of sound is infinite.

To determine the depth of the chasm, we can use the equation v = d/t, where v is the velocity of sound, d is the depth of the chasm, and t is the time it takes for the sound to reach the climber. Rearranging the equation, we have d = v x t. Given that the speed of sound is 343 m/s and the time it takes for the sound to reach the climber is 3.16 s, we can calculate the depth of the chasm as follows:

d = (343 m/s) x (3.16 s) = 1084.48 m

Therefore, the depth of the chasm is 1084.48 meters.

To calculate the percentage of error that would result from assuming the speed of sound is infinite, we can use the formula:

Percentage of error = [(actual value - assumed value) / actual value] x 100%

In this case, the assumed value would be infinity. Since the actual value is 343 m/s, the formula becomes:

Percentage of error = [(343 m/s - ∞) / 343 m/s] x 100%

However, dividing by infinity is undefined, so we cannot calculate the percentage of error in this case.

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Bryant average speed is 24m/s and 108m is the distance traveled by Brian.

The total distance traveled by the object in a specific amount of time is its average speed. A scalar quantity, average speed, exists. The magnitude serves as its representation, and it lacks direction.

The overall movement of an object, regardless of direction, is called distance. Distance can be characterized as the amount of ground covered, regardless of the starting or ending points of an object.

Bryant average speed = 129+105/2

Bryant average speed = 24

Average speed = distance/time

24 = distance/4.5

24×4.5 = distance

distance = 108m.

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Answer: Look, the main difference between men's and women's college basketball is the attention the programs and players get. The women's ball is slightly smaller than the men's ball. ... Men get a thirty-five-second shot clock, while women only get a thirty-second shot clock.

The physical structure of capacitor consists of two conducting surfaces separated by insulating material.

Capacitor is a device that stores electrical energy in an electric field by the virtue of accumulating electric charges on two close surfaces insulated from each other. It is a passive electronic component with two terminals and the effect of capacitor is known as capacitance

Capacitor works on the principle that the capacitance of a conductor increases when earthed conductor is brought near it. Therefore,  capacitor has two plates that are separated by a distance having equal and opposite charges. The properties of capacitors are: working voltage, tolerance, working temperature and temperature coefficient.

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Answer:

  500 m

Explanation:

The applicable relation is ...

  wavelength = speed/frequency

  wavelength = (5000 m/s)/(10 cycles/s) = 500 m/cycle

The wavelength is 500 meters.

Answer:

I agree with Raymond because total energy is conserved

Explanation:

The law of conservation of energy states that energy is neither created nor destroyed, but is transformed from one form to another. As the skateboarder goes up and down the ramp, there is the interconversion of energy between kinetic and potential energy, assuming energy is not lost to heat or other forms of energy.

Kinetic energy is energy in motion, and potential energy is energy at rest. As the skateboarder descends the ramp, the motion increases and the potential energy is converted to kinetic energy, and maximum kinetic energy is attained at the lowest point on the ramp because that is where speed is greatest. However, as the skateboarder ascends the ramp, the kinetic energy decreases progressively and is being converted to potential energy, which is greatest at the top of the ramp, where the skateboarder is momentarily at rest, and speed is zero. Hence at each point on the ramp, total energy is the same.

Answer:

i think its B. frequency

Explanation:

please tell me if its wrong but it should be right

Answer:

the mechanical energy : 40,623,900 J

the potential energy : 33,903,900 J

the kinetic energy : 6,720,000 J

Explanation:

To calculate the mechanical energy, potential energy, and kinetic energy of the vehicle, we can use the following formulas:

Mechanical Energy (ME) = Potential Energy (PE) + Kinetic Energy (KE)

Potential Energy (PE) = mgh

Kinetic Energy (KE) = 1/2mv^2

where m is the mass of the vehicle, g is the acceleration due to gravity (9.81 m/s^2), h is the height of the decline, and v is the velocity of the vehicle.

Given:

m = 2100 kg

v = 80 m/s

h = 1700 m

g = 9.81 m/s^2

Potential Energy (PE) = mgh = 2100 kg x 9.81 m/s^2 x 1700 m = 33,903,900 J

Kinetic Energy (KE) = 1/2mv^2 = 1/2 x 2100 kg x (80 m/s)^2 = 6,720,000 J

Mechanical Energy (ME) = Potential Energy (PE) + Kinetic Energy (KE) = 33,903,900 J + 6,720,000 J = 40,623,900 J

Answer: I think it’s actually a

Explanation: water only rises when it’s warm and the will condense as it gets colder

Answer:

The purpose of step 1 is to induce magnetism into the needle, so that it retains magnetism and behaves as a magnet after the process.

Explanation:

The method of production the needle magnet in the procedure is the single stroke. This process involves a continuous stroking of a magnetic object (e.g needle) repeatedly for a period or number of times with a permanent magnet. Thus, when the permanent magnet is removed, the object retains magnetism, and behaves like a magnet.

The importance of the stroking process is the turn a magnetic object to a magnet by inducing magnetism into it.

Answer:

2 Hz

Explanation:

f = frequency

n = wave crest

t = time

f = n/t → f = 6/3 = 2

The algebraic signs of Alex's x velocity and y velocity the instant before he safely lands on the other side of the crevasse depend on the direction of his motion.

Let's consider the x direction first. If Alex is moving towards the right side of the crevasse, his x velocity would be positive. Conversely, if he is moving towards the left side of the crevasse, his x velocity would be negative.

Now let's focus on the y direction. If Alex is moving upwards as he jumps across the crevasse, his y velocity would be positive. On the other hand, if he is moving downwards, his y velocity would be negative.

In summary,
- If Alex is moving towards the right side of the crevasse, his x velocity is positive.
- If Alex is moving towards the left side of the crevasse, his x velocity is negative.
- If Alex is moving upwards, his y velocity is positive.
- If Alex is moving downwards, his y velocity is negative.

It is important to note that without more specific information about the direction of Alex's motion, we cannot determine the exact algebraic signs of his velocities. However, this explanation covers the general cases and provides a clear understanding of how the algebraic signs of velocity depend on the direction of motion.

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The slope of the graph of the equation at the point (20, 2) is 1/8.

To find the slope of the graph of the equation at the given point (20, 2), we need to find the derivative of the equation with respect to x and evaluate it at x = 20. Let's differentiate the equation implicitly:

xy - 9y^2 = 4

To differentiate implicitly, we treat y as a function of x and apply the chain rule. Differentiating both sides of the equation with respect to x:

1 * y + x * dy/dx - 9 * 2y * dy/dx = 0

Simplifying this equation:

y + x * dy/dx - 18y * dy/dx = 0

Grouping the terms with dy/dx:

dy/dx * (x - 18y) = -y

Now, let's solve for dy/dx by dividing both sides by (x - 18y):

dy/dx = -y / (x - 18y)

Substituting the given point (20, 2) into the equation:

dy/dx = -2 / (20 - 18(2))

         = -2 / (20 - 36)

         = -2 / (-16)

         = 1/8

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Answer:

The human body runs at a constant 37 ºC but the air around you at room temperature is about 20-25 ºC which means heat is constantly leaving your body to warm your surroundings and maintain thermal equilibrium. You don't lose much energy doing this however as air heats reasonably quickly

Explanation:

To pull the tanker 0.630 km total work to be done is  1.871 × 10⁹ Joule.

The definition of force in physics is: The push or pull on a massed object changes its velocity.

An external force is an agent that has the power to alter the resting or moving condition of a body. It has a direction and a magnitude.

Resultant force acting on the tugboat = √2 × 2.10 × 10⁶ N.

To pull the tanker 0.630 km, that is, 630 m, work done = force × displacement

= √2 × 2.10 × 10⁶ N × 630 m

= 1871004543.01 Joule.

= 1.871 × 10⁹ Joule.

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The position is given by \(\(x = A \cos(\omega t)\)\), velocity is \(\(v = -A \omega \sin(\omega t)\)\), and acceleration is \(\(a = -A \omega^2 \cos(\omega t)\)\).

To find the position, velocity, and acceleration of the mass at time \(\(t\)\) in simple harmonic motion, we can use the equations of motion for harmonic oscillators.

Let's denote the equilibrium position as \(\(x = 0\)\) and the initial displacement of the mass as \(\(A\)\). The angular frequency, \(\(\omega\)\), of the oscillation can be calculated by:

\(\(\omega = \sqrt{\frac{k}{m}}\),\)

where;

\(\(k\)\) = spring constant and \(\(m\)\) is the mass.

The position of the mass at time \(\(t\)\) is given by

\(\(x = A \cos(\omega t)\)\)

The velocity of the mass at time \(\(t\)\) is given by

\(\(v = -A \omega \sin(\omega t)\)\)

The acceleration of the mass at time \(\(t\)\) is given by

\(\(a = -A \omega^2 \cos(\omega t)\)\)

In this case, since the mass is initially at rest and released from rest, \(\(A\)\) is the initial displacement of the mass. As the student moves the mass out, \(\(A\)\) would be the initial displacement of the mass.

Using these equations, you can calculate the position, velocity, and acceleration of the mass at any given time \(\(t\)\) in the simple harmonic motion.

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A train travels at a speed of 24 m/s. Then it slows down uniformly at 0.065 m/s² until it stops the distance does the train travel while slowing down are 4430.75 m.

Distance measures length. For example, the gap of a street is how lengthy the street is. In the metric gadget of size, the maximum not unusualplace devices of distance are millimeters, centimeters, meters, and kilometers.

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ANSWER

0ne third the velocity of object 2

Explanation:

P1=P2

m1v1=m2v2

v1=1/3.v2 [ since, m1=3.m2 ]

m2=m1/ 3

Answer:

one-third the velocity of Object 2

Explanation:

Answer:

Explanation:

Fascia is loose connective tissue that surrounds and interpenetrates all components of the human body including muscles, nerves, blood vessels, and organs. It provides structural integrity, serves as a matrix for intercellular communication, and is involved in biochemical and bioelectric signaling.

Answer:

Harmful bacteria are called pathogenic

Explanation:

Harmful bacteria are called pathogenic bacteria because they cause disease and illnesses like strep throat, staph infections, cholera, tuberculosis, and food poisoning.

Principal axis or optical axis is a virtual line that passes through

the center of the lens.

A lens is a transmissive optical tool that employs refraction to focus or disperse a light beam. A compound lens is made up of numerous simple lenses that are often aligned along a common axis, as opposed to a simple lens, which is made up of a single transparent piece.

Principal axis the line between the optical center and the centers of curvature of a lens's or a curved mirror's faces. Any one of three axis that are mutually perpendicular and around which a body has its greatest moment of inertia.

Principal axis or optical axis is a virtual line that passes through

the center of the lens.

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The time rate of increase of pressure in the reservoir at this instant is approximately 9.56 Pa/s.

To calculate the time rate of increase of pressure in the reservoir, we can use the Ideal Gas Law:
PV = nRT

where P is the pressure, V is the volume, n is the number of moles, R is the gas constant, and T is the temperature. We can rearrange this equation to find n:
n = PV / RT

Since air is being pumped into the reservoir at a rate of 1 kg/s, we can convert this mass flow rate to a molar flow rate using the molar mass of air (M_air = 28.97 g/mol or 0.02897 kg/mol):

Molar flow rate = mass flow rate / molar mass

Molar flow rate = 1 kg/s / 0.02897 kg/mol

Molar flow rate ≈ 34.51 mol/s

Now, we can find the time rate of increase of moles in the reservoir:
dn/dt = 34.51 mol/s

Next, let's differentiate the Ideal Gas Law with respect to time:
d(PV)/dt = R * d(nT)/dt
Since V and T are constants, we get:
dP/dt = R * dn/dt / V

Substituting the values:
dP/dt = (8.314 J/mol*K) * (34.51 mol/s) / (30 m³)
dP/dt ≈ 9.56 Pa/s
At this instant, the time rate of increase of pressure in the reservoir is approximately 9.56 Pa/s.

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Answer:

C. Wedge

Explanation:

Answer:

GIVE THE PERSON ABOVE BRAINLIEST UwU

Explanation: