The discovery of a moon orbiting a planet allows astronomers to measure
(a) the planet's mass; (b) the moon's mass and density; (e) the planet's ring stmcture; (d) the planet's aatering history.

Answer:

224 J

Explanation:

Step one:

given data

Force applied = 22.4 N

distance = 10 meters

Required:

the work done

Step two:

The expression for the work done is

WD= force*distance

substitute

WD= 22.4*10

WD= 224 J

the force will be 4 units

Consider two objects of masses m1 and m2

, separated by a distance r.

According to Newton's law of gravitation,

F=(G M1 m2)/r²

On doubling the distance between two masses the gravitational force between them will become one-fourth.

16 x 1/4= 4 units

The variables for the given parcel with a temperature of 30°C and a dewpoint of 20°C at 1000mb are as follows:

i. Actual vapor pressure (e)

ii. Saturation vapor pressure (es)

iii. Actual mixing ratio (r)

iv. Saturation mixing ratio (r5)

v. Total water mixing ratio (rT)

vi. Available supersaturation (SA)

vii. Excess water mixing ratio (rF)

To calculate the variables, we can use the following equations and physical relations:

i. Actual vapor pressure (e):

We can use the Clausius-Clapeyron equation to calculate the actual vapor pressure:

e = es(T) * (rh/100)

where es(T) is the saturation vapor pressure at temperature T, and rh is the relative humidity.

ii. Saturation vapor pressure (es):

We can use the Arden Buck equation to calculate the saturation vapor pressure:

es = 6.112 * exp((17.67 * T)/(T + 243.5))

where T is the temperature in °C.

iii. Actual mixing ratio (r):

The actual mixing ratio can be calculated using the following equation:

r = (0.622 * e)/(p - e)

where e is the actual vapor pressure and p is the atmospheric pressure.

iv. Saturation mixing ratio (r5):

The saturation mixing ratio can be calculated using the following equation:

r5 = (0.622 * es)/(p - es)

v. Total water mixing ratio (rT):

The total water mixing ratio can be calculated by summing the actual mixing ratio and the excess water mixing ratio:

rT = r + rF

vi. Available supersaturation (SA):

The available supersaturation can be calculated using the following equation:

SA = (rT - r5)/r5 * 100

vii. Excess water mixing ratio (rF):

The excess water mixing ratio can be calculated by subtracting the saturation mixing ratio from the actual mixing ratio:

rF = r - r5

By using these equations and the given starting conditions, we can calculate the values of the variables mentioned above.

The calculations for the variables mentioned involve utilizing several equations and physical relations related to atmospheric thermodynamics. These equations are derived from fundamental principles and empirical relationships that describe the behavior of water vapor in the atmosphere. By applying these equations to the given conditions, we can determine values such as actual vapor pressure, saturation vapor pressure, actual mixing ratio, saturation mixing ratio, total water mixing ratio, available supersaturation, and excess water mixing ratio. These variables provide valuable information about the moisture content and saturation levels of the parcel of air being analyzed. Each equation serves a specific purpose in quantifying these properties and allows for a comprehensive understanding of the thermodynamic state of the parcel.

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True, this is because the echo sounder that is applicable to boats cannot be used directly for airplanes

By sending out sound waves and timing how long it takes for them to bounce back, an echo sounder, sometimes referred to as a sonar, is a device frequently used in boats to gauge the depth of the water beneath the craft.

When a sound pulse from an echo sounder strikes a solid item in the water, such as fish, vegetation, or other objects, the signal is reflected back to the surface.

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Answer:

the advantage gained by the use of a mechanism in transmitting force specifically : the ratio of the force that performs the useful work of a machine to the force that is applied to the machine.

Explanation:

Mechanical advantage is a measure of the force amplification achieved by using a tool, mechanical device or machine system. The device trades off input forces against movement to obtain a desired amplification in the output force. The model for this is the law of the lever.

A high CVP reading indicates an elevated pressure in the central veins, which can be a sign of several medical conditions such as heart failure, dehydration, or low cardiac output.

CVP stands for Central Venous Pressure, which is the pressure of blood in the central veins (such as the superior vena cava or the inferior vena cava) that return blood to the heart. Central venous pressure is frequently used as an examination of hemodynamic status, especially in the intensive care unit.

A healthcare professional should interpret the significance of a high CVP reading in the context of the patient's medical history and other test results.

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Answer:

Electromagnetic waves only

Only electromagnetic waves can travel through space. hence option A is correct.

Electromagnetic waves are the waves associated with photon. Photons carry  electromagnetic waves. it has both electric field and magnetic field perpendicular to each other.

when input of the Dipole antenna is connected to the electric signals having certain frequency. on first half cycle one pole is on positive potential and other is on negative potential. The pole which is at negative potential attracts all the electrons towards it and the pole which is at positive potential attracts positive holes. In the second half cycle polarity of the poles changes and it happen repeatedly, Due to change in polarity of the dipole of the antenna, electrons in the antenna produces electromagnetic waves which we use it for our radio station and mobile phones.

Electromagnetic waves does not require any medium to travel, it can travel through space(vacuum). Waves travels in the medium but there is no medium in the space, but electromagnetic waves are able to travel in the vacuum so scientist named the space as medium of ether.

Hence option A is correct.

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Answer:

measure what

Explanation:

?????????????

Answer:

B. Mass

Explanation:

Answer:

it is an ionic compound

Explanation:

Answer:

(1) 1×10⁻⁴

Explanation:

From the question,

α = (ΔL/L)/(ΔT)............. Equation 1

Where α = linear expansivity of the metal plate, ΔL/L = Fractional change in Length, ΔT = Rise in temperature.

Given: ΔL/L = 1×10⁻⁴, ΔT = 10°C

Substitute these values into equation 1

α  = 1×10⁻⁴/10

α = 1×10⁻⁵ °C⁻¹ .

β = (ΔA/A)/ΔT................... Equation 2

Where β = Coefficient of Area expansivity, ΔA/A = Fractional change in area.

make ΔA/A the subject of the equation

ΔA/A = β×ΔT.......................... Equation 3

But,

β = 2α.......................... Equation 4

Substitute equation 4 into equation 3

ΔA/A = 2α×ΔT................ Equation 5

Given: ΔT = 5°C, α = 1×10⁻⁵ °C⁻¹

Substitute into equation 5

ΔA/A = ( 2)×(1×10⁻⁵)×(5)

ΔA/A  = 10×10⁻⁵

ΔA/A  = 1×10⁻⁴

Hence the right option is (1) 1×10⁻⁴

The example of each of the energy electrical to heat, chemical to heat,  electrical to mechanical energy is as given below.

a.) Every electric heater has a resistor as its heating element. Electric heating is the conversion of electrical energy to thermal energy. It converts electrical energy into heat energy when an electric current crosses a resistor, according to the Joule heating principle.

b.) Exothermic reactions, which commonly release chemical energy in the form of heat, are those that take place. Newly formed bonds can store some of the heat energy required for a reaction to proceed as chemical energy.

c.) An electric motor converts electrical energy into mechanical energy. A generator converts mechanical energy into electrical energy. A storage dam's mechanical energy is transformed into electrical energy via a hydroelectric powerplant.

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Answer:

acceleration=(v final-vinitial)/time

a=(vf-vi)/t

2=(30-10)/t

2=20/t

t=20/2=10 seconds

distance=v0t+at²/2

d=10 x 10+ 2x 10²/2=100+100= 200 m

Explanation:

Explanation:

noo she has potencial i think kinetic is just if shes moving and shes just about to jump so i think is no

Answer:

KE = KE (incidental) - KE of emitted photons

or KE = h * f - Wf

So   h * f = KE + Wf = 1.2 + 1.88 = 3.08    incident energy

If you double the frequency then h * f = 6.16

KE = 6.16 - 1.2 = 4.96 eV

When electromagnetic radiation is Doppler-shifted by motion away from the detector, the observed wavelength increases.

When an object emitting electromagnetic radiation, such as light, is moving away from an observer (detector), the wavelengths of the observed radiation are stretched or increased.

This phenomenon is known as the Doppler shift. It occurs because the motion of the source affects the perceived frequency or wavelength of the radiation. When the source is moving away, the observed wavelength is longer compared to the emitted wavelength.

This effect can be observed in various contexts, such as the redshift observed in the light from distant galaxies, indicating their recession from us due to the expansion of the universe.

Additionally, it is relevant in understanding the behavior of stars, galaxies, and other astronomical objects. By analyzing the Doppler shift, scientists can infer important information about the motion and velocity of celestial objects.

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The specific heat of copper is 0.965 J/g°C. q = m*c*ΔT where q is the heat transferred, m is the mass of the substance, c is the specific heat of the substance, and ΔT is the change in temperature.

the specific heat of a substance is the amount of heat required to raise the temperature of one gram of the substance by one degree Celsius. In this case, we calculated the specific heat of copper using the amount of heat transferred when a 50 gram sample of copper was placed in cold water and experienced a temperature decrease of 25°C. By using the formula q = m*c*ΔT, we were able to calculate that the specific heat of copper is 0.965 J/g°C. This value is important in understanding how much heat energy is needed to raise the temperature of a certain amount of copper, which can have practical applications in fields such as engineering and thermodynamics.
Plugging these values into the formula, we get:
481.25 J = 50 g * c * 25°C
Solving for c, we get:
c = 0.965 J/g°C.

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Answer:

Nutrients for animals

Explanation:

Producers are organisms that produce their food, they do not need to depend on other animals for their food. They possess photosynthetic properties that enable them to produce their food.

These set of organisms are located at the bottom of the food chain, they can convert components like water, sunlight and air into carbohydrate through the unique process of photosynthesis.

Without these producers, the food chain would not exist as they form the base and foundation of the food chain, some lower animals depend on them as their source of food.

Given,Acceleration of the elevator, a = 1.35 m/s²

The tension in the string is given as T1 and T2.Let the mass of the elevator be m.

Therefore, force acting on the elevator = mg.

The net force acting on the elevator is given by F=mg-ma.

Therefore, the force F= m(g-a)

Since the elevator is moving downward, the tension in the string T1 will be greater than T2 as T1 will be supporting the entire weight of the elevator and T2 will only support a part of the weight.

The tension in the string is given by,T1 - T2 = m(g-a).......(1)

and T1 + T2 = mg.......(2)

Solving equation (1) and (2), we get,T1 = 5886.2 N and T2 = 3924.1 N

Therefore, the tension in the first string T1 = 5886.2 N and the tension in the second string T2 = 3924.1 N.

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Answer:

1080000

Explanation:

300 x 60s=18000m/minute

18000 x 60min=1080000m/h

Explanation:

The velocity with which the rock initially kicked if the cliff is 5 m high and the rock lands 7m from the base of the cliff is 6.93 m / s

s = ut + 1 / 2 at²

s = Distance

u = Initial velocity

t = Time

a = Acceleration

In vertical motion,

s = 5 m

u = 0

a = 9.8 m / s²

5 = 0 + ( 1 / 2 * 9.8 * t² )

t² = 1.02

t = 1.01 s

In horizontal motion,

s = 7 m

a = 0 ( Since velocity is constant )

7 = 1.01 u + 0

u = 7 / 1.01

u = 6.93 m / s

Therefore, the velocity with which the rock initially kicked is 6.93 m / s

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Answer:

Both particle and wave properties

Explanation:

Light is defined as a particle and a wave, and even as a combination of a particle and a wave. A unit of light is the photon. Higher energy photons behave like particles and low energy photons behave like waves.

Experiments performed with light indicate that light exhibits both particle and wave properties.

Answer:

What’s your question

Explanation:

And where

Answer:

its upside down

Explanation:

The device that converts chemical energy into electrical energy is a battery.

On the other hand, the resistor is a passive element that is mainly used to limit the current in a circuit.

A resistor doesn't convert chemical energy into electrical energy.

Therefore, we can conclude that the given statement is false

Explanation:

the no of proton of an element is found in the inner part of the orbital of an element along with the neutron ,also knowing that this two add up to give mass no an element

where neutron+proton=mass no=nucleon no,where proton= electron, unless it carries charges call ion

Answer:

f = 1/0.3 s

Explanation:

have a nice day.

c) 6,000 ft MSL is the approximate base of the cumulus clouds if the surface air temperature at 1,000 ft MSL is 70 F and the dewpoint is 48 F.

This is the mean elevation of the ocean's surface. The accumulation of water from melting land-based glaciers and glaciers, as well as the augmentation of seawater as it warms, are the primary causes of global mean sea level rise.

The Kanchenjunga peak has been India's tallest mountain, rising over 8.5 thousand meters above sea level. It has five peaks and borders Nepal and India. This one was preceded by Nanda Devi, who stood at approximately 7.8 thousand meters.

MSL is an abbreviation for mean sea level. It is used as one of many altitude determinants by both aircraft and drone pilots. It is, however, not a standard measure that defines the space above.

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Answer:

winter

Explanation:

winter because the sun is not reaching the nothern hemisphere directly so the season inthe nothern hemisphere is winter.

and also it cannot be autumn because autumn is a season for leaves falling.

and also it cannot be spring because spring is the season for growth.

and also it cannot be summer because sumer is the season for the sun rays reaching directly on the earth.

HOPE THIS HELPS.

The average velocity is given by

Where d is the distance covered and t is the time taken.

For the given case, we have

d = 75 m

t = 8.9 s

Therefore, the average speed of the hockey player is 8.43 m/s

The hockey player is moving at a speed of 9.5 m/s.