softball bats are very interesting examples of physical pendula. the distribution of mass along the length of the solid wood bat (bat 1 in the figure below) differs from an aluminum bat (bat 2 in the figure below) because the barrel of the aluminum bat is hollow. 1) which of the two softball bats will show a longer period of oscillation when swinging from the knob end of the handle in simple harmonic motion?

Answer:

geology - a branch of earth science that focuses on the study of the rock

biology - study of life

molecular clock - a technique for estimating the age of species by comparing molecular differences between species

sediment - dirt, pieces of rock, and the remains of living things at the bottom of oceans, seas, and lakes

chemistry terms - a branch of physical science that focuses on composition, structure, properties and change of matter

Explanation:

Pretty sure that's all correct. Hope this helps

Answer:

index fossil

Explanation:

The dog team does 250,000 Joules of work while pulling the sled 1000 meters at a constant speed.

The work done by the dog team pulling the sled:

The work done is given by the formula:

Work = Force × Distance × cos(Θ)

The applied force can be calculated as the sum of the force required to overcome the friction and the force required to maintain a constant speed.

Force(friction) = coefficient of kinetic friction × Normal force

Normal force = weight of sledge = 5000 N

Force(friction) = 0.05 × 5000  = 250 N

Force(applied) = Force(friction) = 250 N

Work = Force(applied) × Distance

Work = 250  × 1000

Work = 250,000 Nm

Work =  250,000 Joules

Therefore, the dog team does 250,000 Joules of work while pulling the sled 1000 meters at a constant speed.

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The upthrust force on the metal block is 40gf when a metal block weighs 500gf in air and 460gf when completely immersed in water.

Given:  Weight of a metal block in air=500gf

Weight of a metal block when immersed in water=460gf

When a body is immersed in a fluid, it experiences an upward force which is called upthrust.

Loss in weight of the metal block = upthrust force

Loss in weight of the metal block = weight of the metal block in the air- the weight of the metal block when immersed in water

So, loss in weight of the metal block= 500gf - 460gf = 40gf

Therefore, the upthrust force on the metal block is 40gf.

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The velocity vs. time graph provides information about how the velocity of an object changes over time.

The velocity vs. time graph is a graphical representation of the object's velocity at different points in time. The graph consists of two axes: the vertical axis represents velocity, and the horizontal axis represents time. By examining the graph, you can determine various characteristics of the object's motion.

For example, a positive slope on the graph indicates that the object is moving in a positive direction with increasing velocity. A negative slope indicates motion in the opposite direction or decreasing velocity.

A horizontal line represents constant velocity, as the slope is zero. The steepness of the slope indicates the rate at which the velocity is changing. A steeper slope indicates a faster change in velocity.

The velocity vs. time graph is a valuable tool in understanding the motion of objects. By analyzing the graph's shape and slope, you can determine important information such as acceleration, deceleration, constant velocity, and direction of motion.

It provides a visual representation that aids in interpreting and predicting an object's motion over time.

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Answer:

Foil insulation can prevent radiant heat loss all year round. In summer, it can prevent heat from entering by reflecting sunlight. In winter, it can reflect heat back inside a room, keeping it warmer.

Answer:

I think it is A

Explanation:

Answer:

A volcanic "hotspot" is an area in the mantle from which heat rises as a thermal plume from deep in the Earth. High heat and lower pressure at the base of the lithosphere (tectonic plate) facilitates melting of the rock. This melt, called magma, rises through cracks and erupts to form volcanoes.

Answer:

A. How much matter an object has, plus the magnitude and direction  of its motion

Explanation:

Momentum is defined as the product of mass by velocity, in the international system of measurements (SI) momentum has the following Units [kg*m/s].

P = m*v

where:

P = momentum Lineal [kg*m/s]

m = mass [kg]

v = velocity [m/s]

Therefore the answer is A) How much matter an object has, plus the magnitude and direction  of its motion

Answer:

A is correct

Explanation:

A P E X

Answer: Because the force of gravity depends on the size of the planet, so a smaller planet will have less gravitational force than a larger planet. So our gravitational force is not as strong as a bigger planet so we can still stand up and jump normally but on a smaller planet we could jump higher and on a bigger planet, we could not even be able to jump at all.

Answer:

gravity holds you down, floors protect that

Explanation:

Answer:

R = 22 Ω

P = 0.10 W

P = (ΔV)^2 / R

0.10 = (x)^2 / 22

x = 1.5

ΔV = 1.5 V

Explanation:

When a process is said to be at a certain sigma level, it refers to its level of process performance or capability.

Sigma (σ) is a statistical term that represents the standard deviation of a process, which measures the variability or spread of data within that process. In the context of process improvement methodologies like Six Sigma, sigma level is used as an indicator of process quality and defect rate.

A process at 4 sigma level means that it exhibits a level of performance where the process variation is such that there are about 6.68 defects per million opportunities (DPMO), or a defect rate of 0.000668%. This level of performance indicates that the process has a relatively higher variability and there is room for improvement to reduce defects and improve quality.

On the other hand, a process at six sigma level represents a higher level of process performance. It means that the process exhibits a very low level of variation, with only about 3.4 defects per million opportunities (DPMO), or a defect rate of 0.000034%. A six sigma level process is considered to be highly capable and aims to achieve near-perfection in terms of quality and minimizing defects.

Comparing a process at 4 sigma level to a process at six sigma level, the key difference lies in the level of process performance and the associated defect rates. A process at six sigma level has significantly lower variation and defect rate compared to a process at 4 sigma level. The six sigma level represents a higher standard of quality and is more reliable and consistent in delivering products or services with minimal defects. The 4 sigma level, while still considered good, has a higher potential for improvement and may benefit from further efforts to reduce variation and defects to achieve higher levels of quality and process capability.

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Answer: Traveling wave

Explanation:

The given series, 1 + 7n Σ 57 n = 1, is divergent because the terms in the series continue to increase without bounds, the sum of the series also increases indefinitely.

To determine the convergence or divergence of the series, we can analyze its behaviour as n approaches infinity. The series can be written as Σ(1 + 7n*57) for n = 1 to infinity. By simplifying the expression, we have Σ(399n + 1) for n = 1 to infinity.

As n increases, the summand of the series grows linearly with a coefficient of 399. Since the coefficient is nonzero and positive, the series will diverge. This means that the sum of the series will not approach a finite value as n tends to infinity.

Therefore, the given series is divergent, and we cannot find its sum. It is important to note that a divergent series does not have a finite sum. Therefore, the sum of the given series is "DIVERGES."

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An example of a project where an object with a high (k) value would be a benefit is one that has to do with the design of a rocket engine. Metals that have very high thermal conductivity are useful for building rocket engines. This is because of the amount of energy/heat that is required to be combusted by these parts to achieve a break from the earth's force field of gravity.

While engineering problems where having an object with a low (k) value would be a benefit is those that have to do with buildings. Buildings are made from concrete and brisk with have low thermal conductivity hence low

A k-value (also known as a k-factor or lambda value) is a measure of a material's thermal conductivity, or how quickly heat moves through it. It is a basic quality that is independent of material quantities.

Thermal conductivities of different building materials may be compared using k-values. This is often useful in determining the possibility of heat transmission between the inside and exterior of a structure.

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Answer:

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What happens to kinetic energy as velocity increases?

Explanation:

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When the velocity of an object increases, the kinetic energy of the object increases as well.

The kinetic energy of an object is the energy possessed by the object due to its motion.

The kinetic energy of an object in motion is calculated as follows;

K.E = ¹/₂mv²

where;

Thus, from the equation above, when the velocity of an object increases, the kinetic energy of the object increases as well.

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Kinematics

First Velocity (Vf) = 18 m/s

Last Velocity (Vl) = 19 m/s

time (t) = 5 seconds

acceleration = ______?

Answer :

Vl = Vf + a × t

19 = 18 + a × 5

19 - 18 = 5a

1 = 5a

1 / 5 = a

0,2 m/s² = a ✅

Answer: 0.2 m/s^2 east

Explanation:

A PE X

Answer: Kinetic energy is the energy an object has because of its motion

(if it needs to be a one worded answer than just type motion)

The potential energy of an object depends on its mass and its height.

The law of conservation of energy states that energy can be neither created nor destroyed, but it can change its form.

Answer:Kinetic energy is the energy an object has because of its motion. If we want to accelerate an object, then we must apply a force. Applying a force requires us to do work.

As expressed by the equation, potential energy depends upon the mass and the height of the object. Any increase in these two quantities will lead to an increase in the amount of potential energy possessed by the object.

The law of conservation of energy states that energy can neither be created nor destroyed - only converted from one form of energy to another. This means that a system always has the same amount of energy, unless it's added from the outside.

Answer:

a reflected sound wave completely bounces off an object and diffraction occurs when there is an opening in a wall and only the waves that can fit through the wall go and then the waves start to expand again after going through the hole.

Explanation:

Answer:

Wind is caused by differences in the atmospheric pressure. When a difference in atmospheric pressure exists, air moves from the higher to the lower pressure area, resulting in winds of various speeds.

Our Earth is a rotating planet. Fast moving air is deflected by the Coriolis effect, except exactly on the equator. This defines the direction of cyclones, hurricanes, and typhoons rotation. The wind flow around a large cyclone is counterclockwise in the Northern Hemisphere and clockwise in the Southern Hemisphere.

Wind forms when the sun heats one part of the atmosphere differently than another part. This causes expansion of warmer air, making less pressure where it is warm than where it is cooler. Air always moves from high pressure to lower pressure, and this movement of air is wind.

The high is west of you, and the low is east of you. (If you're in the northern Hemisphere.)

Answer:

The answer to your question is D An annual weather pattern

Explanation:

Centric forces tend to promote linear or straight-line movement, while eccentric forces tend to promote rotational or angular movement.

Centric and eccentric forces are terms used in the context of muscle movement and contraction. Centric forces refer to forces that act along the longitudinal axis of a bone, causing linear motion of the bone. These forces are typically produced by the contraction of muscles that cross the joint perpendicular to its axis. An example of a centric force would be the contraction of the biceps muscle to lift a weight. Eccentric forces, on the other hand, refer to forces that act on a bone in a direction perpendicular to its longitudinal axis, causing rotational or angular motion of the bone.

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Answer:

False

True

False

True

False

True

Explanation:

Answer:

You need to plug in the values

(C) 100(-1/2)^0 = 100

100(-1/2) = -50

100(-1/2)^2 = -25

100(-1/2)^3 = 100 * -1/8 = -12.5

Answer:

Yes.

Explanation:

ANSWER:

Distance = 9 km

Displacement = 9 km east

STEP-BY-STEP EXPLANATION:

When we speak of distance we refer to the length between any two points in space, while displacement refers to the distance from an initial position to a final position regardless of the path.

In this case, being in the same direction, the displacement and distance are the same (in magnitude).

Therefore:

Answer:

σ = 1.09 mm

Explanation:

Step 1: Identify the given parameters

rod diameter = 20 mm

stiffness constant (k) = 55 MN/m = 55X10⁶N/m

applied force (f) = 60 KN = 60 X 10³N

young modulus (E) = 200 Gpa = 200 X 10⁹pa

Step 2: calculate length of the rod, L

K = \frac{A*E}{L}K=

L

A∗E

L = \frac{A*E}{K}L=

K

A∗E

A=\frac{\pi d^{2}}{4}A=

4

πd

2

d = 20-mm = 0.02 m

A=\frac{\pi (0.02)^{2}}{4}A=

4

π(0.02)

2

A = 0.0003 m²

L = \frac{A*E}{K}L=

K

A∗E

L = \frac{(0.0003142)*(200X10^9)}{55X10^6}L=

55X10

6

(0.0003142)∗(200X10

9

)

L = 1.14 m

Step 3: calculate the displacement of the rod, σ

\sigma = \frac{F*L}{A*E}σ=

A∗E

F∗L

\sigma = \frac{(60X10^3)*(1.14)}{(0.0003142)*(200X10^9)}σ=

(0.0003142)∗(200X10

9

)

(60X10

3

)∗(1.14)

σ = 0.00109 m

σ = 1.09 mm

Therefore, the displacement at the end of A is 1.09 mm

The type of voice that could produce a pitch that has a speed of 343 m/s and a wavelength of 0.68 m that  would be OPTION E which is soprano and also contralto.

Pitch can be regarded as characteristic of sound  which is been used in making differentiation  between the shrill as well as flat sound.

when there is  usually  Sounds with higher or lower in pitch according to the frequency of vibration  as regards the  sound waves that produce them, hence The type of voice that could produce a pitch that has a speed of 343 m/s and a wavelength of 0.68 m that  would be soprano and also contralto.

Therefore option E is correct because soprano serves as a type of classical female singing voice that consist of almost the  highest vocal range of all voice .

The options for the question are:

A. bass

B.baritone

C. tenor

D. contralto

E. soprano

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