a scientist studies the light from a distant galaxy. the light from the galaxy shows a shift to longer wavelengths. what can the scientist conclude about the galaxy?

At the time of the summer solstice, the noontime altitude of the sun is at its highest point, around 90°.

Altitude is the height above sea level. It is typically measured in either metres or feet. In aviation, altitude can also refer to the vertical distance between an aircraft and a certain reference point on the ground. Altitude can be used to determine the air pressure, temperature, and density of the air. Altitude can also be used to calculate the distance a plane can travel without refueling. Altitude can play an important role in the weather of an area, as air pressure and temperature tend to decrease with altitude. Altitude can also affect the type of vegetation found in an area. In mountain regions, the altitude can have a dramatic effect on the climate, creating distinct areas of vegetation and wildlife. Altitude can also affect the types of crops that can be grown in an area, depending on the air pressure, temperature, and precipitation.

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Answer:

Here you go..

hope it helps..!

Explanation:

So since the gravitational force is directly proportional to the mass of both interacting objects, more massive objects will attract each other with a greater gravitational force, so as the mass of either object increases, the force of gravitational attraction between them also increases.

Charged particles are fundamental to the behavior of electric currents, electric circuits, and resistance. An electric current is the flow of charged particles, typically electrons, through a conductor.

The flow of charged particles generates an electric field that induces a potential difference, or voltage, across the conductor.Electric circuits are constructed by connecting conductors and electrical components, such as resistors, capacitors, and inductors, in a specific configuration. The arrangement of the components determines how the current flows through the circuit.

The flow of current through the circuit depends on the resistance offered by the components in the circuit and the potential difference across the circuit.Resistance is the property of a conductor that opposes the flow of current. The resistance of a conductor is proportional to the number of charged particles in the conductor, the length of the conductor, and the cross-sectional area of the conductor. The resistance can also be affected by the temperature of the conductor and its material properties.

In summary, charged particles are responsible for generating electric currents that flow through electrical circuits. The behavior of the currents is determined by the arrangement of the components in the circuit and the resistance offered by the conductors and components. Resistance is a fundamental property of a conductor that opposes the flow of charged particles and can be affected by various factors.

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In the drag race between Alison and Kevin, Alison wins by 1 second.Let's denote the total distance of the race as "d" and the constant accelerations of Alison and Kevin as "a" and "b," respectively. Since both drivers start from a standing position, their initial velocities are zero.

According to the given information, Alison covers the last 1/4 of the distance in 3 seconds, while Kevin covers the last 1/3 of the distance in 4 seconds.

Let's calculate the time it takes for Alison to cover the last 1/4 of the distance:

Since the distance covered is 1/4 of the total distance, we can write:

1/4 * d = (1/2) * a * (3^2)

d = 9a/2

Similarly, for Kevin, the time it takes to cover the last 1/3 of the distance is:

1/3 * d = (1/2) * b * (4^2)

d = 8b/3

Since both expressions represent the same total distance, we can equate them:

9a/2 = 8b/3

Simplifying the equation, we find:

27a = 16b

From this equation, we can see that Alison's acceleration is greater than Kevin's. Therefore, Alison reaches the finish line before Kevin, winning the race.

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Answer:

deep sea will obviously be more affected because of the sea floor shaking

Answer:

deep see

because of the earth inside part highly pressure

Answer:

gravity

Explanation:

The string models the force of gravity (the sun "pulling" on the earth)

The mass of the sample = 1.50 g

From the question, we have

q= 9.86 J

C = 0.90 J/g-K

temperature ΔT = ( 30.5 ºC - 23.2 ºC ) = 7.3 ºC = 7.3 K

The heat (q) absorbed is,

q = m x C x ΔT    

m= q/ (C x ΔT)

m = 9.86 J / ( 0.90 J/g-K ) x 7.3 K ) = 1.50 g

The mass of the sample = 1.50 g

Heat :

Heat is energy that is transmitted from one body to another when temperatures are different. Heat travels from the hotter body to the colder body when two bodies at differing temperatures come in contact. Heat is the result of the movement of kinetic energy within a material or an item, or from an energy source to a material or an object. Radiation, conduction, and convection are the three mechanisms through which such energy can be transferred.

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Binocular disparity refers to the discrepancy between the images viewed by each eye. For items that are closer, the difference is greater, and for those that are farther away, the difference is smaller.

The discrepancy between how an object appears to the left and right eye is known as binocular disparity. The difference is brought about by the horizontal distance between the eyes, which offers each eye a marginally different perspective of the outside world. The brain generates a 3D perception of the surroundings using the discrepancies between the images from the two eyes. The object appears to be closer the higher the binocular dispersion. The images perceived by each eye differ more from one another because the eyes must condense more in order to focus on close objects. On the other hand, since the eyes are almost parallel, objects in the distance have less discrepancy.

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Answer:

Explanation:

b )

Normal force R = mgcosθ

= 76.6 x 9.8 x cos 38

R = 591.5 N

c )

Force of friction

= μ R

μ is coefficient of friction .

= .15 x 591.5

= 88.73 N

d )

Net force

= mg sinθ - friction

= 76.6 x 9.8 x sin 38 - 88.73

= 462.16 - 88.73

= 373.43 N

Acceleration = 373.43 / 76.6

a = 4.87 m / s²

e )

v² = u² + 2 a s

s = 40.5 m

a = 4.87

u = 0

v² = 0 +2 x 4.87 x 40.5

= 394.5

v = 19.86 m /s

f )

v = u + a t

19.86 = 0 + 4.87 t

t = 4 .07 s

Answer:

t = 0 1.697 seconds

Explanation:

Comment

This is a standard question where the time is the same for both the vertical distance the ball has to drop and the time it takes to go horizontally.

Formulas

dv = vi*t + 1/2 a t^2

dv is the vertical distance that the ball has to travel in a downward direction

dh = vh * t

Givens

a = 9.81

dv = 1.44

vi = 0

t = ?

dh = 2 m

t = same as above (but not given)

Solution

dv = 1/2 a * t^2

1.44 = 1/2 * 9.81 *t^2                 Multiply by 2

2*1.44 = 1/2 * 2 * t^2

2.88 = t^2

t = 1.697 seconds

Note that you do not have to use the horizontal information to get the time. You only have to realize that the ball has no vertical velocity to begin with.

The type of galaxy in which star formation is no longer occurring is an elliptical galaxy. Elliptical galaxies are made up of old stars and do not have much gas or dust, which are necessary for new star formation. In contrast, spiral galaxies have ongoing star formation as they have a lot of gas and dust in their arms.

However, it is important to note that there can be exceptions to this general rule and some elliptical galaxies may have some residual star formation occurring in certain regions.

In elliptical galaxies, star formation is no longer occurring. These galaxies consist mainly of older, low-mass stars and contain very little gas and dust, which are essential for new star formation. As a result, their stellar population is aging without being replaced by newly formed stars.

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Given information: The average method reports the following unit data for the forming department. Units completed in the forming department are transferred to the painting department. Production cost information for the forming department follows.

Direct materials:
Units completed during the period = 45,000 units
Ending work in process inventory = 5,000 units
Direct materials cost = $202,500

Conversion costs:
Units completed during the period = 45,000 units
Ending work in process inventory = 5,000 units
Conversion cost = $189,000

a. Calculation of equivalent units of production for both direct materials and conversion for the forming department:
Equivalent units of production = Units completed during the period + (Ending work in process inventory * Degree of completion)
Direct materials:
Equivalent units of production = 45,000 + (5,000 * 50%) = 47,500 units

Conversion costs:
Equivalent units of production = 45,000 + (5,000 * 60%) = 48,000 units

b. Calculation of the cost per equivalent unit of production for both direct materials and conversion for the forming department:
Cost per equivalent unit of production = Total cost for the period / Equivalent units of production

Direct materials:
Cost per equivalent unit of production = $202,500 / 47,500 units = $4.26 per unit

Conversion costs:
Cost per equivalent unit of production = $189,000 / 48,000 units = $3.94 per unit

c. Calculation of the cost assigned to the forming department's output using the weighted average method:
Total cost = Cost of units transferred out + Cost of ending work in process inventory
Cost of units transferred out = Number of units transferred out * Cost per equivalent unit of production
Cost of ending work in process inventory = Number of units in ending work in process inventory * Cost per equivalent unit of production

Direct materials:
Cost of units transferred out = 40,000 * $4.26 per unit = $170,400
Cost of ending work in process inventory = 5,000 * $4.26 per unit = $21,300
Total cost = $170,400 + $21,300 = $191,700

Conversion costs:
Cost of units transferred out = 40,000 * $3.94 per unit = $157,600
Cost of ending work in process inventory = 5,000 * $3.94 per unit = $19,700
Total cost = $157,600 + $19,700 = $177,300

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An adiabatic process is one where there is no heat exchange between the system and the surroundings. Its internal energy will increase, leading to an increase in temperature.

Correct answer is , True.

The temperature of an incompressible substance undergoing an adiabatic process were to decrease, it would imply that heat energy has been lost from the system, which violates the definition of an adiabatic process. Therefore, the statement is true.

The temperature of an incompressible substance undergoing an adiabatic process can indeed decrease. An adiabatic process is a thermodynamic process in which no heat is exchanged between the system and its surroundings. In the case of an incompressible substance, the process may involve work being done on or by the substance, causing a change in temperature. If the substance is expanding adiabatically (doing work on its surroundings), its internal energy will decrease, leading to a decrease in temperature. Conversely, if the substance is being compressed adiabatically (work being done on it), its internal energy will increase, leading to an increase in temperature.

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Answer:

0.650

Explanation:

Move the decimal point three times to the left.

The angle between the ladder and the ground is changing at rate of 2.4ft/s.

A right tringle is formed when ladder is against the wall,

x²+y² = 13²

dy/dt = -4ft/s

y = 5 feet

2[dx/dt] + 2[dy/dt] = 0

y = 10, x= √69 z = 13ft

2×√69[dx/dt] + 2×5×(-4) = 0

16.6[dx/dt] = 40

dx/dt = 40/16.6

dx/dt = 2.4 ft/s

The angle between the ladder and the ground is changing at rate of 2.4ft/s.

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Answer:

A car travelling at a speed of 45 m/h takes 20 minutes to reach its destination.

We have to find the distance travelled by the car .

Changing the unit of time into hour

Time = 20/60 hour

Time = 2/3 hour

Now, let's calculate the distance travelled by the car .

\( \bf \: Distance \: travelled \: = Speed \: \times Time\)

Put the value we get

\( \sf \dashrightarrow \ \: Distance \: travelled \: = 45 \times \frac{2}{3} \\ \\ \sf \dashrightarrow \ \: Distance \: travelled \: = \cancel{45} \: \times \frac{2}{ \cancel3} \\ \\ \sf \dashrightarrow \ \: Distance \: travelled \: = 15 \times 2 \\ \\ \sf \dashrightarrow \ \: Distance \: travelled \: = 30km \: \)

So, the distance travelled by the car is 30Km .

The car has travelled a distance of 15 m

Since distance, d = vt where

Now, the car travels at a speed of 45 m/h in 20 minutes.

So,

Since d = vt,

substituting the values of the variables into the equation, we have

d = vt

d = 0.75 m/min × 20 min

d = 15 m

So, the car has travelled a distance of 15 m

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Answer:

The material (foam) traps air.

Explanation:

Buoyancy is the upward force we need from water ti stay afloat. The trapped air in the life jacket weighs much, much less than the weight of the water so the water pushes up harder than the life jaket pushes down. This is what lets the life jacket to help you float.

Apologies if this is wrong.

a) Answer:

Momentum = 6 kgm/s

Explanation:

Momentum = mass × velocity

Given that,

Therefore, momentum = (0.02 × 300)kgm/s

Momentum = 6 kgm/s

b) Answer:

Momentum =80 kgm/s

Explanation:

Momentum = mass × velocity

Given that,

Therefore, momentum = (40 × 2)kgm/s

Momentum = 80 kgm/s

c) Answer:

Momentum = 800 kgm/s

Explanation:

Momentum = mass × velocity

Given that,

Therefore, momentum = (200 × 4)kgm/s

Momentum =800 kgm/s

Answer:

The 1st reaction is synthesis and the 2nd reaction is a double displacement.

By replacing the force system acting on the post with a resultant force and a couple of moments at point o we get total momentum of 1478.85 ft-lb.

As per the figure we have 3 forces: At the top 300lb left side 150lnb and at the middle 200lb.

first, we have to break down the forces into x and y components.

Now calculating each force separately:

∑Fₓ=300lb+cos 30°-150×4/3+200

=259.81-120+200

∑Fₓ=339.81lb.

Now, calculate the sum of y components.

∑Fy=300 sin 30°+150×3/5

∑Fy=300 sin 30°+90

∑Fy=240lb

Now we have to x and y components by these values we can find the actual force.

|F|=√Fx²+Fy²

|F|=√(339.81)²+(240)²                     α=tan⁻¹(∑Fₓ/∑Fy)

|F|=√115470.83+57600                      α=tan⁻¹(339.81/240)

|F|=√173070                                       α=35.23°

|F|=416.02 and 35.23°

the sum of moments at O

∑Mo=-Fx₃×2+Fx₂×4-Fx₁×6

∑Mo=-200(2)+4/5 150*4-3000cos30°(6)

∑Mo=-400+480-277.65

         =1478.85ftlb

∑Mo=1478.85ftlb

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Answer:

Scalar, a physical quantity that is completely described by its magnitude; examples of scalars are volume, density, speed, energy, mass, and time. Other quantities, such as force and velocity, have both magnitude and direction and are called vectors.

Explanation:

Scalar quantities give a magnitude, while vector quantities give a magnitude and a direction. The answer will be a measurement that does not change, regardless of the direction of action. Displacement is a measure of length in a given direction; distance is the scalar version of displacement. ... Mass is a scalar quantity.

examples of scalar quantities are mass, speed, distance, time, energy, density, volume, temperature, distance, work and so on

Answer:

Scalar, a physical quantity that is completely described by its magnitude; examples of scalars are volume, density, speed, energy, mass, and time. Other quantities, such as force and velocity, have both magnitude and direction and are called vectors.

Answer:

0.119 s is the correct answer to this question.

Explanation:

As mentioned in the question

U=3.89\ m/s

a=-1.44\ m/s^2

S=4.8\ m

Consider the final speed of the softball covering the distance of 4.8m is v

Now using the equation

\(v^2=U^2+2aS\)

Putting the value of U, A, S in the previous equation we get

\(V^2=3.89^2-2\times 1.44\times 4.8\\V=3.7\ m/s\\\)

Now again using the equation

v=U+at

where U=intial velocity, t= time

Substituting the value of v, U, a

\(3.7=3.89-1.44\times t\\t=0.119\ s\\\)

Hence the slide time is 0.119 s

Answer:

Cracking of an egg is a physical change since the egg and the stuff inside does not change but the shape or appearance of the shell changes.

Explanation:

Hope it helps

Answer:

P = 140000 [Pa]

Explanation:

To solve this problem we must remember that pressure is defined as the relationship between Force on the area of a body.

In this particular problem, we are given the force acting on the upper surface of the block, including the force exerted by the atmospheric pressure.

P = F/A

where:

P = pressure [Pa] (units of Pascals)

F = force = 3.5*10⁴ [N]

A = area = 0.25 [m²]

P = 3.5*10⁴/0.25

P = 140000 [Pa]

Answer:

θ = 17.67°

Explanation:

The grating equation can be used here to find the angle. The grating equation is given as follows:

\(m\lambda = dSin\ \theta\)

where,

m = order = 2

d = 3.88 x 10⁻⁶ m

λ = wavelength of light = 589 nm = 5.89 x 10⁻⁷ m

θ = angle = ?

Therefore, using these values in the equation, we get:

\((2)(5.89\ x\ 10^{-7}\ m) = (3.88\ x\ 10^{-6}\ m)Sin\theta \\Sin\theta = \frac{(2)(5.89\ x\ 10^{-7}\ m)}{(3.88\ x\ 10^{-6}\ m)}\\\\\theta = Sin^{-1}(0.3036)\)

θ = 17.67°

Answer:17.67

Explanation:

Answer:

Explanation:

Comment

You have to read this carefully enough that you don't mix up energy and forces.

Gravity is a force. If you don't believe me try jumping off a building. Which way are you going to go and why? Down because gravity attracts your mass.

So Magnetism must be a force as well. It acts in one direction, but not a specific one the way gravity acts). It also either attracts or repulses (pushes an object away)

Answer A

Answer:

NO

Explanation:

if it has no acceleration then it's not moving

Answer:

Yes when the velocity is constant then the acceleration is said to be zero. Thus an object with 0 acceleration can be in motion.

Let me give you an example to make you more clear

Example:

When  a car is  traveling at a constant 90 km/h in a straight line has nonzero velocity and zero acceleration.

a) The angle the cannonball was fired at is approximately 45 degrees.

b) The maximum height reached by the cannonball is 625 meters.

c) The time of flight of the cannonball is approximately 10 seconds.

d) The range of the cannonball is approximately 2,500 meters.

a) To find the angle the cannonball was fired at, we need to use the given information about the initial resultant velocity. Since the initial x-direction velocity is the same as the initial resultant velocity, and the cannonball is shot at an angle, we can use trigonometry. The cosine of the angle is equal to the initial x-direction velocity divided by the initial resultant velocity. Thus, the angle is the inverse cosine of the ratio: angle = arccos(250/250) ≈ 45 degrees.

b) The maximum height reached by the cannonball can be determined using the projectile motion equations. At the highest point of its trajectory, the vertical component of the velocity becomes zero. We can find the time it takes to reach this point using the equation: time = (initial vertical velocity) / (acceleration due to gravity). Substituting the given values, we get time = 250 / 9.8 ≈ 25.51 seconds. Next, we can calculate the maximum height using the equation: height = (initial vertical velocity)^2 / (2 * acceleration due to gravity). Plugging in the values, we find the maximum height ≈ (250^2) / (2 * 9.8) ≈ 625 meters.

c) The time of flight of the cannonball is the total time it takes for the cannonball to return to the same initial y position. Since the cannonball lands at the same initial y position, the total time of flight is twice the time it took to reach the maximum height. Therefore, the time of flight is approximately 2 * 25.51 seconds = 51.02 seconds, which can be rounded to approximately 10 seconds.

d) The range of the cannonball is the horizontal distance it travels. We can calculate the range using the equation: range = (initial x-direction velocity) * (time of flight). Plugging in the given values, we find the range ≈ 250 * 10 = 2,500 meters.

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