On a planet other than earth, the acceleration due to gravity is more than on earth. if you float in water on this planet, you would
a. find it easier to float on earth.
b. harder to float on earth.
c. same effort to float on earth
d. you would sink on earth
e. have a greater buoyant force on earth

Answer:

m = 250 kg

Explanation:

Hope this helps

Answer:

250 kg

Explanation:

see pic

Answer:

It can hurt you if you get a carpet burn if you rub against carpet really fast and hard. It can help by keeping your shoes from slipping around all the time when you walk/run. Same with bike tires.

Explanation:

The net direction on the cart, if a person pulls on a cart to the right with a force of 10n and a second person pulls to the left with a force of 3n, is 7n to the right.

The net force direction can be determined by finding the net vector sum of the forces acting on it.

Since the first person pulled the cart to the right with a force of 10n,

Assuming the right direction as positive, this force can be represented as a vector ⇒(+)10n

Similarly, as the second person pulls the cart to the left, the force can be represented as a vector ⇒ (-)3n,

∴ Net force = Net vector sum of the forces

                   =(+10n) + (-3n)

⇒Net force = +7n

Thus, the net direction on the cart, if a person pulls on a cart to the right with a force of 10n and a second person pulls to the left with a force of 3n, is 7n to the right.

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Answer: 7n

Explanation:

Power of TV = 65Watt

If Efficiency = 70%, then the percentage of energy wasted is 30%

So, the amount of energy getting wasted:

= 30/100 × 65

= 1950/100

= 195/10

= 19.5 W

The relationship between star temperature and luminosity in the main sequence is known as the main sequence mass-luminosity relationship.

What is luminosity?

Luminosity is the amount of light and other forms of electromagnetic radiation emitted by a star, galaxy, or other celestial object. It is typically measured in units of watts per square meter (W/m2). Luminosity is related to the total energy output of a star or other celestial body and is an important factor in determining its temperature, composition, and other physical properties.

This relationship states that the hotter the star, the more luminous it is. This is because hotter stars are more massive and more luminous than cooler stars. As the star's temperature increases, so does its luminosity.

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Answer:

a circuit that is a blend of series paths and parallel paths. See Figure for a visual explanation. Most circuits are of this variety. Don't be afraid to tackle these circuits as far as the math goes.

ANSWER:

1. C. Wave X and Wave Y share the same speed.

2. D. The speed of a wave is affected by the properties of the medium it is traveling through, not amplitude.

STEP-BY-STEP EXPLANATION:

The amplitude of a wave does not affect the speed at which the wave travels. Both wave A and wave B travel at the same speed. The speed of a wave is only altered by alterations in the properties of the medium through which it travels.

Therefore, in the first art the correct answer is C. Wave X and Wave Y share the same speed.

If the medium is uniform (does not change), the speed of the wave will be constant.

Therefore, the correct answer is: D. The speed of a wave is affected by the properties of the medium it is traveling through, not amplitude.

If the acceleration of gravity is 9.81 m / s², then the speed of the cat when it slid off the table would be 3.61 m /s.

There are three equations of motion given by  Newton,

v = u + at

S = ut + 1/2×a×t²

v² - u² = 2×a×s

As given in the problem if a stuntwoman jumps from a height of 98.5 m into an airbag below. If she struck the airbag at a speed of 40 m/s including the effects of air resistance,

By using the second equation of the motion,

S = ut + 1/2 × a × t²

1.1 = 0 + 0.5 × 9.8 × t²

t² = 1.1 / 4.9

t = 0.47  s

The speed of the cat =  1.7 / 0.47

                                   = 3.61 m /s

Thus, the speed of the cat when it slid off the table would be 3.61 m /s.

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According to the Statement it always was receding at its current rate, that galaxy was just next to our own galaxy, moving at 8000 km/s.

Astronomy The Universe The Nebula Galaxy. Did you know that, in conjunction to our light, the Sun, the Milky Way Cluster, a large expanse of space, includes millions and billions of other stars? Its Milky Way is distinguished by a phenomenal number of stars, infinitesimal particles, and gas.

Since V = H x d, the velocity of a galaxy at a distance of 400 x 10⁶ light-years = 8000 km/s

For H = 20 km/s per million light-years. The time required to travel

4 x 10⁸ light - years at 8000 km/s is given by :

T = (4x10⁸ light - years ) (9.46 x 10¹² km /light-year) ÷ 8 x 10³

= 4.7 x 10¹⁷ = 15 billion year

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Complete question : Consider a galaxy at a distance of 400 million light-years receding from us at a velocity, v. If the Hubble constant is 20 km/s per million light-years, what is its velocity? How long ago was that galaxy right next door to our own Galaxy if it has always been receding at its present rate?

In the movie Planes: Fire & Rescue, the helicopter refills its water tanks from a natural reservoir near the beginning of the movie. Therefore, option d, a reservoir is correct.

In this scene, the helicopter named Dipper flies over to the reservoir, dives down, and scoops up water into her water tanks before heading back to the fire to extinguish it. The reservoir is a significant source of water for the firefighters since it is too far for the fire trucks to drive to, which could take more time.

The fire was growing quickly, and Dipper, the helicopter, played a crucial role in containing it. When the fire gets out of control, and the fire brigade cannot handle it, the firefighters call in a team of aircraft firefighters who use helicopters that can scoop up huge amounts of water from the lake and drop it on the fire to extinguish it.

The Planes: Fire & Rescue is a movie that follows Dusty's journey as he navigates life as a firefighting plane after learning that his racing days are over. It's a family-friendly movie that is sure to keep everyone entertained.

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Because capacitor 1 is longer by two times, V1 has more charge.

The storage of electric charge frequently uses a cylindrical capacitor. It is a particular kind of capacitor with the outline of a cylinder with an inner radius of "a" and an outer radius of "b."

Capacitors are said to be in series when they are connected in a row. The total capacitance of a series of capacitors can be calculated by adding the reciprocals of each capacitor's individual capacitances and then taking the reciprocal of the total.

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Answer:

1176 N

Explanation:

We are given that

Mass of car=m1=1280 kg

Mass of trailer=m2=350 kg

Car exerts a horizontal force against the ground =3.6x103N

Coefficient of friction=0.15

We have to find the force exerted by car  on the trailer.

F={m1+m2)a+Ff

F={m1+m2)a+m2g

g=9.8m/s2

Substitute the values then we get

3.6x103=(1280+350a=0.15x350x9.8

3.6x103=1630a+514.5

1630a=3600-514.5=3085.5

a=3085.5/1630=1.89m/s2

Force exert on the trailer

F=m2a+m2g

F=350(1.98)=0.15x350x9.8

F=1176N

Hence, the car exerts force on the trailer=1176 N

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Speed=

\(33m {s}^{ -1} \)

Distance=

\(163m\)

speed= distance/time

So,

Time= distance/speed

Time= 163/33

\(\huge\underline\mathtt\colorbox{cyan}{4.9393s}\)

The resultant vector in unit-vector notation is <0.58, 0.98>. Arctan(21.0/11.7) = 67.1° counterclockwise from the +x-axis.

To find the resultant in unit-vector notation, we can calculate the sum of the three displacement vectors. Adding the vector components, we get the resultant vector  = <11.7, 21.0>. Thus, the resultant vector in unit-vector notation is <0.58, 0.98>.

The magnitude of the resultant displacement is the length of the resultant vector, which can be calculated using Pythagorean theorem: Sqrt(11.72 + 21.02) = 24.9 units. The direction of the resultant displacement is the direction of the resultant vector, which can be calculated using inverse tangent: arctan(21.0/11.7) = 67.1° counterclockwise from the +x-axis.

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a) Heat flux on surface of filament = 238 W/m^2.  b)Heat flux = 13.7 W / 0.0201 m^2 = 682 W/m^2. c)Therefore, the savings per year for using an LED light instead of an incandescent lamp are $788.40.

A. On the surface of the filament:

The heat flux on the surface of the filament is given by the Stefan-Boltzmann law that states that a body at temperature T will emit radiation at a rate proportional to T to the power of 4.

The proportionality constant is the Stefan-Boltzmann constant, which is equal to 5.67 × 10^-8 W m^-2 K^-4.

The heat flux on the surface of the filament is given by;

σ = 5.67 x 10^-8 W/m2K4

T = temperature of filament, K

The temperature of the filament is given by P = IV where V is the voltage of the lamp, and I is the current in the filament.

Power, P = 150W, Voltage V =120VCurrent I = P/V = 150/120 = 1.25 AT = V/I (R/4)

Where R is the resistance of the filament.

To find R we use the equation;

P = V^2 / RR = (V^2) / PP = IV,

we get R = V / IT = V^2 / PR = V/I = 96 Ohm

T = (120 x 1.25) (96 / 4) = 300 K

σ = 5.67 x 10^-8 W/m^2K^4

Heat flux = σT^4

Heat flux on surface of filament = 238 W/m^2

B. On the surface of the glass bulb: The heat flux on the surface of the glass bulb can be determined by the Stefan-Boltzmann law. The filament emits radiation, which is absorbed by the glass bulb, raising its temperature.

The temperature of the glass bulb is unknown, but it is assumed to be at room temperature, which is 27°C or 300 K.

The filament radiates to all sides, so we need to find the total radiation emitted, which is then absorbed by the glass bulb. The total radiation emitted is given by;

P = σAT^4

Where A is the surface area of the filament

σ = 5.67 x 10^-8 W/m^2K^4T = temperature of filament = 300 K

The surface area of the filament is given by;

A = πDL

Where D is the diameter of the filament, and L is the length of the filament.

A = π x (0.5 x 10^-3 m) x (5 x 10^-2 m)

A = 7.85 x 10^-5 m^2P

A = (5.67 x 10^-8 W/m^2K^4) x (7.85 x 10^-5 m^2) x (300 K)^4

A = 13.7 W

The heat flux on the surface of the glass bulb is equal to the power absorbed by the glass bulb divided by the surface area of the glass bulb.

Heat flux = Power / Surface area of the glass bulb, Diameter of the glass bulb = 8 cm, Radius of the glass bulb, r = 4 cm

Surface area of the glass bulb = 4πr^2 = 201.06 cm^2 = 0.0201 m^2

Heat flux = 13.7 W / 0.0201 m^2 = 682 W/m^2

C. Calculation of savings when an LED light is used instead:

An LED light uses 15W for the same light output as a 150W incandescent lamp. It is used for 8 hours per day every day. The cost of electricity is $0.20 per kWh.

The savings per year are given by the equation:

Savings per year = Cost of using the incandescent lamp - Cost of using the LED light

Cost of using the incandescent lamp = Power used x Time used x Cost of electricity per kWh

Power used = 150 W

Time used = 8 hours per day x 365 days per year = 2920 hours per year

Cost of electricity per kWh = $0.20/1000 W hr^-1

Cost of using the incandescent lamp = (150 W) (2920 hours/year) ($0.20/1000 W hr^-1) = $876 per year

Cost of using the LED lamp = (15 W) (2920 hours/year) ($0.20/1000 W hr^-1) = $87.60 per year

Savings per year = $876 - $87.60 = $788.40

Therefore, the savings per year for using an LED light instead of an incandescent lamp are $788.40.

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Exposing the photographic plate or CCD to light for longer periods of time means that more light energy is being absorbed by the sensor, which results in a brighter and more detailed image. However, prolonged exposure may also lead to overexposure and loss of detail in the brightest areas of the image.A photographic plate is a light-sensitive material used for capturing photographic images. It is typically made of a thin sheet of glass or plastic coated with a layer of light-sensitive silver halide crystals suspended in a gelatin emulsion. When exposed to light, the silver halide crystals undergo a chemical reaction that forms a latent image. This latent image can be developed into a visible image through a series of chemical processes that reduce the exposed silver halide crystals to metallic silver.

Photographic plates were the primary medium for capturing photographic images before the advent of digital cameras. They were widely used in scientific research, astronomy, and artistic photography throughout the 20th century. One of the advantages of photographic plates is their high resolution, which can be several orders of magnitude higher than that of digital cameras. This makes them useful for capturing fine details in scientific and astronomical images.However, photographic plates have largely been replaced by digital cameras due to their limitations. They are relatively slow to process, require careful handling, and produce physical negatives that must be stored and preserved. Digital cameras offer greater convenience, speed, and versatility, and have become the standard for most modern photography. Nonetheless, photographic plates continue to be used in specialized fields, such as astrophotography, where their unique properties are still valued.

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Answer:

make the child walk by itself

Explanation:

duh

Answer:

Explanation:

Capacity: the max amount that something can contain.

"the capacity of the freezer is 1.1 cubic feet"

capacitor: device for storing electrical energy, includes two conductor that are close to one another and insulated from each other. A simple example is a parallel-plate capacitor.

Source: Britannica.com

Answer:

Explanation:

The hydro power plant consists of a (artificial) dam that builds gravitational potential energy, P.E. from natural flowing water sources, by locating the dam along the water path. The stored potential energy, P. is converted into kinetic energy, K.E. as the water falls from the dam, down to the turbines, located at a much lower level according to the following principle of conservation of energy equation;

Total Mechanical Energy, M.E. = The potential energy of the water, P.E. + The kinetic energy of the water, K.E. = Constant

M.E. = P.E. + K.E. = Constant

Where;

P.E. = m·g·h

K.E. = (1/2)·m·v²

m = Mass

g = The acceleration due to gravity

h = The height of the dam

v = The velocity

The charts can be explained as follows;

Given that the potential energy P.E. = m·g·h, we have that the potential energy is directly proportional to the height of the dam, and therefore, at mid height, the potential energy would be half the maximum value, and we have;

At mid height, P.E. = (1/2)·\(\mathbf{P.E._{max}}\)

At the top of the dam, the (vertical) velocity of the water = 0, therefore, the kinetic energy = 0

Therefore, at the top of the dam, we get;

M.E. = \(P.E._{max}\) + 0 =

M.E. = \(\mathbf{P.E._{max}}\)

Similarly, at the bottom of the dam, the height, h = 0, therefore, being proportional to the height, P.E. = 0, and the velocity is maximum, and at the bottom, we have;

M.E. = 0 + \(K.E._{max}\)

The first chart, water is halfway down the dam

At the halfway down therefore, we have;

P.E. = (1/2)·\(\mathbf{P.E._{max}}\)

M.E. = \(P.E._{max}\) = (1/2)·

∴ K.E. = \(P.E._{max}\) - (1/2)·

Therefore the first chart, water is halfway down the dam;

Halfway, K.E. = (1/2)·\(\mathbf{P.E._{max}}\) = P.E.

∴ K.E. = P.E.  as shown on the chart

The second chart, water has reached the turbine

Water reaches the turbine at the bottom, and as explained above, we get;

M.E. = 0 + \(K.E._{max}\)

∴ M.E.≈ \(K.E._{max}\)

Therefore, when water has reached the turbine at the bottom of the dam, the kinetic energy is approximately proportional to the total mechanical energy as shown in the chart

The third chart, water is at the top of the dam

Here as shown above, we have;

The total mechanical energy, M.E. ≈ \(\mathbf{P.E._{max}}\) as shown on the chart

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ANSWER

EXPLANATION

Parameters given:

Speed of electron, v = 4.10 * 10^3 m/s

Magnetic field, B = 1.45 T

Magnetic force, F = 1.40 * 10^(-16) N

To find the angle that the velocity of the electron makes with the magnetic field, apply the formula for magnetic force:

where θ = angle

q = electric charge = 1.6 * 10^(-19) C

Make θ the subject of the formula:

Therefore, the angle that the velocity makes is:

To find the second angle, subtract the angle from 180 degrees:

The angles are:

The urban legend of the car thief is an example of A Cautionary Tale.

A cautionary tale makes reference to a given tale aimed at the warning the person of some type of danger, which is generally used to alert about a given behavior and may be very useful to modify a behavior pattern in children.

Therefore, with this data, we can see that A cautionary tale is based on warning and can help to modify certain behavior in c children depending on the ability to create conscious.

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The bicyclist's acceleration is 2.7 m/s². Thus, Option C is the answer

Acceleration is defined as rate of change of velocity with time. Its formula is

a= \(\frac{vf - vi}{t}\)

acceleration = (final velocity - initial velocity) / time

The bicyclist's acceleration can be found using this equation:

In this case,

final velocity = 12.15 m/s

initial velocity is 0 m/s (since the bicyclist starts from rest)

time = 4.5 s

Plugging these values into the equation, we get:

a =\(\frac{12.5 - 0}{4.5}\)

a = 2.7 ms⁻²

Therefore, The correct answer is c. 2.7 m/s²

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When a person walked for 6 km towards the north at 6 km/h and then for 10 km west at 5 km/h, their total displacement travelled (west of the north) is 11.66 km in a north westerly direction.

Given the distance a parson walked towards north (d1) = 6km

The speed towards north (v1) = 6km/h

The distance person walked towards west (d2) = 10km.

The speed towards west (v2) = 5km/h

The displacement will be the shortest distance covered such that it is the resultant of these two distances.

Then displacement = √d1^2 + d2^2 = √6^2 + 10^2 = √136

The required displacement a person walked is 11.66km towards

north-west.

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Homeostasis, The monitoring of internal environmental conditions is part of homeostasis, a sort of homeostasis that is necessary to support life in the human body.

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1.  The dispersion angle can be calculated as follows:

The angle of refraction for red and violet light using Snell's Law. For red light:

sin(41.00°)/1.638 = sin(θ)/1, where θ is the angle of refraction.

Solving for θ, we get θ = 24.42°.

Similarly, for violet light:

sin(41.00°)/1.668 = sin(θ)/1,

solving for θ, we get θ = 24.07°.

The dispersion angle is then the difference between these two angles:

Δθ = θ_violet - θ_red = 24.07° - 24.42° = -0.35°.

Therefore, the dispersion angle is -0.35°.

2. Let w be the width of the beam at the bottom of the block, as measured along the bottom surface. Then, for red light:

sin(24.42°)/1 = sin(θ)/1.638,

solving for θ, we get θ = 16.68°.

Using the same approach for violet light, we get θ = 16.48°.

The width of the beam at the bottom of the block is then:

w = 13.5 cm × tan(16.68°) + 13.5 cm × tan(16.48°) = 6.69 cm.

Therefore, the width of the beam at the bottom of the block is approximately 6.69 cm.

3.  When the rainbow-colored beam emerges from the bottom of the block, the exiting rays of light are once again refracted at the air-glass interface, and they spread out further due to the dispersion of the glass.

Dispersion refers to the phenomenon of a wave or radiation being separated into its component frequencies as it passes through a medium. This occurs because different frequencies of the wave travel at different speeds through the medium, causing them to spread out and separate.

One common example of dispersion is the separation of white light into its constituent colors when it passes through a prism. The different colors of light are refracted differently, causing them to separate into a rainbow-like spectrum. Dispersion is also an important phenomenon in the study of materials, particularly in optics and acoustics. In materials, dispersion can result in the absorption or reflection of certain frequencies, affecting the overall properties of the material.

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Answer:

It depends on 2 factors

the nature of the materials

the normal force.

Explanation:

It depends on 2 factors

the nature of the materials that are in friction and the treatment that they have followed. This factor is expressed by a numerical value called the coefficient of friction or friction.

the force exerted by one body on the other, that is, the normal force.

Answer:

electricity is the answer

So I think its Thermal--->Mechanical---->Electrical--->Light

Thermal from the Burner, Mechanical energy from the steam turns the wheel, Electrical energy through the wires and then light comes from the bulb.

Hope this helps :)

Answer:

Explanation:

Projectile Motion. Projectile motion is different than free fall: it involves two dimensions instead of one. ... Balls traveling in two dimensions, only one of which experiences acceleration, require two sets of equations: one set for the x-direction and the other for the y-direction.