a space shuttle travels in orbit at 21,000 km/hr. how far will it travel in 5 hr

Time period and frequency of its oscillation are 3 sec and 0.33 hertz.

A pendulum is used to describe the too and flow motion of it which is caused due to gravity. A bob consisting of less mass suspended from upper surface by pivot and it is the one which swings due to gravity.

Given:

A simple pendulum makes 12 oscillations in 4 seconds.

time period=?

frequency=?

As pendulum makes 12 oscillations in 4 seconds.

The time taken by pendulum for making one oscillation is 12/4 sec = 3 sec.

Time period = 3 sec.

Frequency of the pendulum's oscillations is found by the formula

Frequency = 1/T = 1/3 = 0.33 Hz

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The spectrum observed from the Sun (or any star) would exhibit an absorption spectrum. This is because the outer gaseous atmosphere of the star absorbs specific wavelengths of light, resulting in dark absorption lines in the spectrum.

In the cooler, lower-density outer atmosphere, where white light from the star travels, some atoms or molecules in the atmosphere absorb photons with particular energy. In the spectrum, these absorptions show up as black lines at specific wavelengths. The specific set of absorption lines that each element or molecule generates results in a distinctive pattern that can be used to identify the elements that are present in the star's atmosphere.

The absorption spectrum offers insightful data on the chemical make-up and physical characteristics of the star. Astronomers can ascertain the elements present, their abundances, and other characteristics like the temperature, pressure, and velocity of the star's atmosphere by examining the absorption lines.

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(a) The minimum speed, the object must have in order to make it to point B is 6.26 m/s.

(b) If the initial speed is 12 m/s, the final speed of the object at point A is 8.1 m/s and point B is 10.23 m/s

The minimum speed of the object in order to reach point B is calculated by applying the principle of conservation of energy as shown below.

K.E₁ + P.E₁ = K.E₂ + P.E₂

K.E₂ - K.E₁ = P.E₁ - P.E₂

where;

¹/₂m(v₂² - v₁²) = mg(h₁ - h₂)

¹/₂(v₂² - v₁²) = g(h₁ - h₂)

v₂² - v₁² = 2g(h₁ - h₂)

v₂² = 2g(h₁ - h₂) + v₁²

where;

v₂ = √ [2g(h₁ - h₂) + v₁² ]

v₂ = √ [2 x 9.8(4 - 2) + 0² ]

v₂ = 6.26 m/s

B.

When the initial speed is 12 m/s, the final speed at A is calculated as;

v₂ = √ [2 x 9.8(0 - 4) +  12² ]

v₂ = 8.1 m/s

The final speed at B is calculated as;

v₂ = √ [2 x 9.8(4 - 2) +  8.1² ]

v₂ = 10.23 m/s

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Answer: depth, shade, fragrance

Explanation:

Based on the given circuit diagram, we can determine the order of currents l1, l2, l3, and l4 at points 1 to 4.

Here's the ranking from largest to smallest: I1 > I2 ≈ I3 ≈ I4

The reason for this ranking is as follows:

1. In the left circuit (points 1 and 2), the current splits into two branches at point 2.

Since the resistance in the left circuit is lower compared to the resistance in the right circuit, the current flowing through the left circuit (I1) will be larger than the current flowing through the right circuit (I2). Therefore, I1 is larger than I2.

2. At point 3, the currents from both circuits merge. Since the circuit configurations are identical and the wires have equal diameters, the current splits evenly between the two paths.

As a result, the current in each path will be the same, making I3 approximately equal to I4.

So, the ranking of the currents at points 1 to 4 is: I1 > I2 ≈ I3 ≈ I4.

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A hook-shaped echo on a radar screen often indicates the possible presence of a tornado-producing thunderstorm.

The hook shape is a characteristic feature observed in the reflectivity pattern on a radar screen when severe weather conditions are present, particularly in the context of supercell thunderstorms. Supercells are large, organized thunderstorms with rotating updrafts that have the potential to produce tornadoes.

The hook echo is formed due to the presence of precipitation, such as rain or hail, swirling around the rotating updraft of the thunderstorm. The hook shape indicates the presence of a mesocyclone, which is a rotating updraft within the storm and a critical factor in tornado development.

Therefore, when meteorologists observe a hook-shaped echo on a radar screen, it serves as an important warning sign that a tornado-producing thunderstorm may be present. This information helps in issuing timely tornado warnings to alert and protect the affected areas.

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A thermometer is a device that measures temperature. Clinical and non-clinical thermometers are two types of thermometers with different purposes.

A clinical thermometer is designed to measure the human body temperature. It usually has a range from 95°F to 110°F or 35°C to 43°C. Clinical thermometers have a narrow range of measurement and high sensitivity. They are typically made of glass and contain a liquid (usually mercury) that expands as temperature increases, causing the level of mercury to rise up the calibrated tube. These thermometers may have a bend in the tube called a kink to prevent the mercury from returning to the bulb after measurement.

On the other hand, non-clinical thermometers are designed for industrial or laboratory use. They measure a wider range of temperatures than clinical thermometers, ranging from -200°C to over 1000°C. Non-clinical thermometers can be made of various materials, such as glass, metal, or plastic. Some common types of non-clinical thermometers include bimetallic thermometers, digital thermometers, infrared thermometers, and thermocouples.

In summary, clinical thermometers are designed for measuring human body temperature and have a narrow range of measurements, while non-clinical thermometers are used for a wider range of temperature measurements in industrial or laboratory settings.

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Answer:

no

Explanation:

Calcium chloride is a chemical compound made up of calcium ions and chlorine ions. ... Mixing calcium chloride with water is an exothermic reaction, which means that the combination of the two substances releases heat. Thus, when you add calcium chloride to water, the solution heats.

The total distance the ball has traveled at the moment of the nth bounce can be calculated using the sum of a geometric series formula of dₙ = h(1 - rₙ) / (1 - r).

Let's assume the initial height of the ball is h. After the first bounce, the ball reaches a height of rh. Following each subsequent bounce, the ball's height can be calculated using the formula:

hₙ = rhₙ₋₁

where hₙ represents the height after the nth bounce.

To find the total distance traveled at the moment of the nth bounce, we can use the sum of a geometric series formula:

dₙ = h(1 + r + r² + ... + rₙ₋₁)

where dₙ represents the total distance traveled after the nth bounce.

The sum of a geometric series formula can be expressed as:

dₙ = h(1 - rₙ) / (1 - r)

Thus, the total distance traveled by the ball at the moment of the nth bounce can be calculated using this formula.

It's important to note that the above calculations assume that there is no external force acting on the ball during its motion and that there is no loss of energy during each bounce.

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i think the answer is 4.6 meters per second

The true statements are, the silver coin lost electrons and the wool cloth lost protons.

A positive charge is an ion with excess proton. In this process the atom deficient number of electron as compared to protons.

When a silver coin is rubbed vigorously against a wool cloth, the silver coin which is a metal will loss electron, having excess number of protons and becomes positively charged in the process.

Thus, the true statements are;

the silver coin lost electrons and the wool cloth lost protons.

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Assuming the box is sitting on a flat surface, static friction would have a maximum magnitude of

0.309mg = 0.309 (15.18 kg) (9.80 m/s²) ≈ 45.97 N

so the applied force should have at least this magnitude.

Answer:

10

Explanation:

yum lang po alam ko sana po tama yun

RS is a composition of rotation and reflection in the Euclidean plane E². The precise description of RS depends on the specific properties of the rotation R and reflection S.

In general, if R and S have the same axis or line of symmetry, the composition RS results in a translation. If R and S have intersecting lines of symmetry, RS yields a glide reflection. If R and S have perpendicular lines of symmetry, RS produces a rotation.

It is important to consider special cases, such as parallel lines of symmetry, coinciding axes, or perpendicular lines of reflection, as they may lead to different outcomes. The classification of isometries in E² involves understanding how rotations and reflections combine to create different transformations in the plane.

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The potential energy of a 47 kg object at the surface of the Earth is approximately 2.94 x 10^9 J.

The equation U = mgh, where m is the object's mass, g is the acceleration brought on by gravity, and h is the height above the surface of the Earth, may be used to determine an object's potential energy at a particular height h above the Earth's surface. At the Earth's surface, h is equal to the radius of the planet, which is around 6.37 x 106 metres. About 9.81 m/s2 is the value of g at the Earth's surface. As a result, it is possible to compute the potential energy of a 47 kilogramme item at the Earth's surface using the formula U = (47 kg) x (9.81 m/s2) x (6.37 x 106 m) = 2.94 x 109 J. in 30 words.

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Answer:

a= (2.3 m/s) / (3.0s) = 0.77 m/s2F= ma20.0 N = m (0.77 m/s2)m = 26 kgForce is measured with?Newtons (N) --> 1 N = 1 kg m/s2

Explanation:

GET THAT A+ MISS GURL

Answer:

Reaction is 20N.

Explanation:

In general, Newton's third law of motion explains that when a force is applied on an object, a reaction of equal magnitude applies in the reverse direction of the force.

i.e F = -R

This implies that, reaction is a force in the opposite direction to that of the force applied.

Force can also be related to the weight of an object as;

F = W = mg

Thus to prevent the 20N stone from falling, a force of 20N is applied in the opposite direction. So the reaction, R is 20N.

Answer:

Lookback time explains that the farther away something is, farther in the past we see it. The Sun's light takes about 8 minutes to reach our eyes. So in reality, we see the Sun as it was 8 minutes ago.

Explanation:

Answer: 1325t miles

Explanation: you have to divide all of them

Answer:

Explanation:

Given:

A = 0.1 m²

F = 200 N

_________

p - ?

Pressure:

p = F / A

p = 200 / 0.1 = 2 000 Pa

Answer:

It is D.

Explanation:

Sound travels by the movement of particles bumping against each other and if there is no particles in a vacuum(space) then there is no sound. Light can travel through space because it doesn't need to travel by/through particles.

Answer:

if you only have to control your chakra and know how to get all your vibes to pass it to objects and it takes time to practice

Answer:

The direction of a moving object will not change if the net force acting on it is zero.

Explanation:

If there is a net force acting on a body, the body may accelerate, slow down, or change direction. In other words, an unbalanced net force may change the state of motion of a body.

The only way a moving object will not change its direction if the body is moving with a constant velocity, meaning all the forces acting on the body are in equilibrium (or balanced). In other words, the net force acting on it is zero, and the speed, as well as direction, would not change.

Therefore, we conclude that the direction of a moving object will not change if the net force acting on it is zero.

The tension in the cord is 81.82 N, if the elevator moves 1 m in the first 1.8 seconds.

Initial speed of the elevator, u = 0 (at rest)

Distance travelled by the elevator, S = 1 meter

Time taken to cover the that distance, t = 1.8 s

Let the acceleration of the elevator = a

Mass of the bundle, m = 8.9 kg

By the second equation of motion,

S =ut + 0.5at²

1 = 0 × 1.8 + 0.5×a×1.8²

a = 2/1.8²

Acceleration, a = 0.617 m/s²

Weight of the bundle acting downward = 8.9×9.81 = 87.31 N

Upward force on the bundle, F = 8.9 × 0.617 = 5.49

Net tension in the cord = (87.31 - 5.49)

= 81.82 N

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Answer:

Explanation:

The mass of the car can be found by using the formula

\(m = \frac{f}{a} \\ \)

f is the force

a is the acceleration

From the question we have

\(m = \frac{2700}{1.63} \\ = 1656.4417...\)

We have the final answer as

Hope this helps you

The position of the boys would determine who will hear the sound

The image is not shown but there is indeed a relationship between the distance from source and the intensity oif the sound which will determine which of the boys that would hear the sound.

The relationship between the distance of the observer and the intensity of sound can be described by the inverse square law, which states that the intensity of a sound wave decreases in proportion to the square of the distance from the source. This means that if the distance between the source of the sound and the observer is doubled, the intensity of the sound decreases by a factor of four.

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The car will come to rest 15 meters in front of the tree.

To solve this problem, we can use the following kinematic equation:

v^2 = u^2 + 2ad

where:

v is the final velocity (0 m/s)

u is the initial velocity (25 m/s)

a is the acceleration (-5 m/s^2)

d is the distance traveled (unknown)

Plugging in these values, we get:

0^2 = 25^2 + 2(-5)d

-625 = -10d

d = 62.5 m

Therefore, the car will travel 62.5 meters before coming to rest. Since the tree is 65 meters away, the car will come to rest 15 meters in front of the tree.

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The 11 W device is likely to burn out when the switch is turned on, due to the higher voltage it will be subjected to compared to its rated voltage. It is important to ensure that the devices used in a circuit have the appropriate voltage rating to avoid damage or failure.

When two devices with different power ratings are connected in series, the voltage across each device is divided according to their power ratings. In this case, the two devices are rated 22 W and 11 W, respectively, and are connected in series across 440 V mains. The voltage across each device can be calculated using the formula V = P/I, where V is the voltage, P is the power rating, and I is the current.

For the 22 W device, the voltage across it is V = P/I = 22/0.1 = 220 V. For the 11 W device, the voltage across it is V = P/I = 11/0.1 = 110 V. Therefore, the 22 W device has a voltage rating of 220 V, which is the same as the voltage of the mains, and the 11 W device has a voltage rating of 110 V.

When the switch is turned on, the voltage across the two devices will be the same, which is 220 V. Therefore, the 22 W device will operate normally, but the 11 W device will be subjected to a higher voltage than its rated voltage. As a result, the 11 W device is likely to burn out before the 22 W device.

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