Apply the general results obtained in the full analysis of motion under the influence of a constant force in Section 2.5 to answer the following questions. You hold a small metal ball of mass a height above the floor. You let go, and the ball falls to the floor. Choose the origin of the coordinate system to be on the floor where the ball hits, with up as usual. Express all results in terms of , , and . Just after release, what are and

Answer:

The amplitude of a wave is the distance from the centre line to the top of a crest or to the bottom of a trough. The highest surface part of a wave is called the crest, and the lowest part is the trough. Wavelength is the distance between identical points (adjacent crests or adjacent troughs).

Explanation:

Answer:

At thestratosphere: it 20- 25km

The pressure of the tank, when filled with water at a depth of 6 m, is approximately 580.124 atmospheres (atm). To calculate the pressure of the tank, one can use the equation: Pressure (P) = Density (ρ) × g × Depth (h)

Pressure (P) = Density (ρ) × g × Depth (h)

Given: Density of water (ρ) = 1000 kg/m³

Acceleration due to gravity (g) = 9.8 m/s²

Depth (h) = 6 m

Using the given values, one can calculate the pressure:

Pressure = 1000 kg/m³ × 9.8 m/s² × 6 m Pressure

= 58800 kg·m⁻¹·s⁻²

Now, let's convert the units to pascals (Pa) using the conversion 1 atm = 1.013 x \(10^5\) Pa:

Pressure = 58800 kg·m⁻¹·s⁻² × (1 atm / 1.013 x\(10^5\) Pa)

Pressure = 580.124 atm

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Answer:

40m/s

Explanation:

a=g

u=0

s=81

v²=u²+2as

v²=2(9.81)(81)

v=√1587.6=39.8446985181≈40m/s

The velocity of the roller coaster car each time it reaches the bottom is 40 ms⁻¹. The correct option is (A).

The rate at which the position of an object changes with respect to time is described by the physical quantity known as velocity. It has both magnitude and direction because it is a vector quantity.

Given:

Initial velocity, u = 0 m/s

Acceleration, a = -9.8 ms⁻²

Distance, d = 81 m

From the third equation of motion:

v² = u² - 2as

v² = 0 - 2×(-9.8)×81

v = 40 ms⁻¹

Hence, the velocity of the roller coaster car is 40 ms⁻¹. The correct option is (A).

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Answer: In order of most inertia to least.

car stopped

motorcycle driving

dog laying

large hot coffee

small mouse

Explanation:

Honestly, I'm not 100% sure about this, but inertia is the want to remain the way it currently is, So the larger the object, the more inertia it should have. So I basically arranged the things by size, I think the moving and not is a red herring to throw you off. Also given that the dog laying in the middle option makes sense because a dog would be in the middle of the size options.

Answer:

8.87

Explanation:

This force exerted on you by the earth is also your weight, option B.

The gravitational pull of the Earth on a body is referred to as the body's weight. Also, weight is the gravitational force between the earth and an object. It is also equal to the product of gravity's acceleration and the object's mass.

The force you exert on the earth in free fall is equal to your weight. The third law of Newton. Forces that are equal and opposite. With your weight, the Earth pulls on you. In other words, an object's weight is determined by the pull of gravity on it.

The complete question is:

This force exerted on you by the earth is also

A. your mass

B. your weight

C. half you mass

D. half your weight

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Answer:

it will take 4 seconds to travel 2 meters.

Answer:

Explanation:

Let R5 be the resistance between R3 and R4

R3 and R4 are in series

R5=R3+R4 = 9+8=17

R1, R2 and R5 are in parallel

Resistance R between A and B is :

1/R= 1/R1+1/R2+1/R5=1/7+1/10+1/17=170+119+70/1190=359/1190

1/R=359/1190

R=1190/359=3.314 Ω

Rounding to nearest hundredth we get 3.31Ω

The frequency of the source is  1.66 Hz.

Let us recall that the impedance of the circuit is the opposition that is offered to the flow of current by a circuit component that is not a resistor. Now let us find the impedance.

I = V/Z

I = current

V = voltage

Z = impedance

Z = V/I

Z = 25/0.4

Z = 62.5 ohm

Z^2 = R^2 + Xc^2

Z^2 =  Xc^2

Xc= Z

Xc = 2πfC

f = frequency

C = capacitance

f= Xc/2πC

f =  62.5/2 * 3.142 * 6

f = 1.66 Hz

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\(g = \frac{GM}{r {}^{2} } \\ g = \frac{6.673 \times 10 {}^{ - 11} \times 10 {}^{18} }{(10 {}^{3}) {}^{2} } \\ g = \frac{6.673 \times 10 {}^{7} }{10 {}^{6} } \\ g = 6.673 \times 10 \\ g = 66.73 \: m.s {}^{ - 2} \)

Answer:

10m above initial height

Explanation:

let acceleration due to gravity = 9.8 m/s/s

v final = v initial - time • gravity

0 = 14m/s - t • 9.8m/s/s

t = 1.43 seconds to reach max height

distance = 1/2 • acceleration • time^2

distance = 1/2 • 9.8 • 1.43^2

distance = 10 meters above initial height

Answer: B. 0 kg*m/s

Explanation:

Answer:

The mass in grams of a red blood cell is about 7.85 ×  10⁻¹¹ grams

Explanation:

To find the mass in grams of a red blood cell,

From,

\(Density = \frac{Mass}{Volume}\)

Then,

\(Mass = Density \times Volume\)

From the question,

Density of a red blood cell is similar to that of water

Density of water = 1 g/mL = 1 g/ cm³

Then, Density of a red blood cell = 1 g/cm³

Now, we will find the volume a red blood cell.

From the question,  

Since the shape is like that of a thick disc, we can determine the volume by using the formula for volume of a cylinder.

Hence,

Volume of a red blood cell = \(\pi r^{2}h\)

Where \(\pi\) Is a constant (Take \(\pi\) = 3.14)

\(r\) is the radius

and \(h\) is the thickness

Diameter of a red blood cell = 10 micrometers

Then, radius of a red blood cell = 10/2 micrometers = 5 micrometers

\(r\) = 5 micrometers = 5 × 10⁻⁶ meters

and \(h\) = 1 micrometer = 1 × 10⁻⁶ meters

Hence,

Volume of a red blood cell = 3.14 × (5 × 10⁻⁶)² × 1 × 10⁻⁶

∴ Volume of a red blood cell = 7.85 × 10⁻¹⁷ cubic meter (m³)

Convert this to cubic centimeter

(NOTE: 1 cubic meter = 1000000 cubic centimeter)

Hence,

Volume of a red blood cell = 7.85 ×  10⁻¹¹ cubic centimeter (cm³)

Now, for the mass

\(Mass = Density \times Volume\)

Density of a red blood cell = 1 g/cm³

Volume of a red blood cell = 7.85 ×  10⁻¹¹ cubic centimeter (cm³)

Then,

Mass = 1 g/cm³ ×  7.85 ×  10⁻¹¹ cm³

Mass = 7.85 ×  10⁻¹¹ g

Hence, the mass in grams of a red blood cell is about 7.85 ×  10⁻¹¹ grams

Answer:

5.99 m  = 6 m

Explanation:

PE = m*g*h

235.2 J = (4 kg)(9.81 m/s^2)(h)

h = (235.2 J)/(9.81*4)

h = 5.99 m

h = 6 m

The amount of energy lost to friction, sound, and other factors during the collision is 48620.15 J.

In the event of a car collision, the momentum of the two vehicles changes as a result of the impact, and energy is transferred from one vehicle to the other.

The impact will result in a loss of energy due to friction, sound, and other factors. Therefore, to calculate the amount of energy lost during the collision, we need to determine the total kinetic energy of the system before and after the collision, and the difference between the two is the energy lost.

To calculate the initial kinetic energy, we need to use the formula 1/2mv², where m is the mass of the object and v is its velocity. Therefore, the initial kinetic energy of car 1 is:KE1 = 1/2 x 1300 kg x (12.5 m/s)² = 101562.5 J The stationary car has no initial kinetic energy since it is at rest.

The total initial kinetic energy of the system is therefore: KE initial = KE1 + KE2 = 101562.5 J To calculate the final kinetic energy, we need to use the velocity of the two cars after the collision.

The problem states that the two cars slide off with a velocity of 6.3 m/s. Therefore, the final kinetic energy of the system is: KE final = 1/2 x (1300 kg + 1500 kg) x (6.3 m/s)² = 52942.35 J.

The energy lost during the collision is the difference between the initial and final kinetic energy: Energy lost = KE initial - KE final = 48620.15 J.

Therefore, the amount of energy lost to friction, sound, and other factors during the collision is 48620.15 J.

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The 2001 World Trade Center attacks fall under which category of terrorism (a).foreign-sponsored terrorism on U.S. soil is correct option.

The 2001 World Trade Center attacks are generally considered to be an example of foreign-sponsored terrorism on U.S. soil. The attacks were carried out by a terrorist organization based in Afghanistan called Al-Qaeda, which was led by Osama bin Laden. The attackers were primarily from Saudi Arabia, but they received training and support from Al-Qaeda operatives based in Afghanistan.

Therefore, the correct option is (a).

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Answer:

Resistance is 1.75 ohms

Explanation:

Magnetic flux:

\({ \phi{ = NBA}}\)

N is number of turns, N = 8

B is magnetic flux

A is area of projection.

From faradays law:

\(E = - \frac{ \triangle \phi}{t} \)

where E is the Electro motive force.

But E = IR

where I is current and R is resistance:

\(IR = \frac{( \phi_{1} - \phi _{2}) }{t} \\ \\ 140 \times R = \frac{8 \times (8 - 5)}{0.098} \\ \\ R = \frac{24}{0.098 \times 140} \\ \\ resistance = 1.75 \: ohms\)

The total distance is 105 kilometers and the total displacement is 15 kilometers east. Option C

To calculate the total distance, we add the distances traveled in each leg of the journey: 60 kilometers (from A to B) + 45 kilometers (from B back to A) = 105 kilometers.

However, displacement refers to the change in position of an object in a straight line from its starting point to its ending point. In this case, since the boat starts and ends at the same point (A), the total displacement is zero.

Hence The total distance is 105 kilometers and the total displacement is 15 kilometers east.

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Calculating the mass of the block requires a bit of work. The formula for the volume of a rectangular solid is V = l*w*h, where V is the volume, l is the length, w is the width, and h is the height. Using the dimensions given, we can calculate the volume of the block as 30*80*60 = 144000 cubic centimeters.

The density of lead is approximately 11.34 grams per cubic centimeter. To calculate the mass of the block, we can use the formula m = V*d, where m is the mass, V is the volume, and d is the density. Plugging in the values we get m = 144000*11.34 = 1,634,400 grams or approximately 1.63 metric tons.

So, the mass of the block of lead is approximately 1.63 metric tons.

Answer:

0.5 m/s²

Explanation:

Net force = mass × acceleration

∑F = ma

20,000 N = (40,000 kg) a

a = 0.5 m/s²

Answer:

which one will not start moving faster

Explanation:

Mass is also described by physics. If you apply the same amount of force to a small sports car and to a big garbage truck.

A series circuit's characteristics are The voltage is divided among all devices in the circuit, The same amount of current flows through all devices in the circuit, There is only one path for current to follow through the circuit, and If one device in the circuit stops allowing current to flow, all other devices in the circuit will also stop functioning.

The Universe is often studied by Scientist. The primary form of evidence that has led astronomers to conclude that the expansion of the universe is accelerating is the Observations of white dwarf supernovae.

The key evidence for that made scientist to talk about the expansion of the universe is accelerating comes from viewing and studying of white dwarf supernovae. It has been found that most distant stars all orbit at approximate speed as stars found about 30,000 light-years from their center.

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Answer:

work

Explanation:

Answer: Here you go, i hope this kinda helps.

Explanation:Disambiguation is just a fancy way of saying "asking clarifying questions".

Watson Assistant replies to user's questions based on a confidence score.

Sometimes the customer's question could be interpreted in two or three different ways.

For example, if you say you'd like to "book a table for 8", the assistant is able to ask a clarifying question:

Did you mean booking a table for 8PM, 8AM, or booking a table for 8 guests?

Watson Assistant will ask the question when its confidence score is divided between a few options to ensure that your customers get exactly the right service they need.

All the equations of motion are as follows, Displacement (s) equation, Final velocity (v) equation, Average velocity (v_avg) equation, Displacement (s) equation with average velocity, and Displacement (s) equation.

In terms of its motion as a function of time, equations of motion define how a physical system behaves. In more detail, the equations of motion define how a physical system behaves as a collection of mathematical functions expressed in terms of dynamic variables.

In conclusion, equations of motion define how a physical system behaves in terms of how its motion changes over time.

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Answer:

D

Explanation:

A. Osteoporosis: Osteoporosis is a condition characterized by decreased bone density and increased risk of fractures, which can be caused by a variety of factors such as aging, hormonal changes, and nutrient deficiencies. While anorexia nervosa may increase the risk of developing osteoporosis, the presence of osteoporosis alone is not indicative of an eating disorder.

B. Amenorrhea: Amenorrhea is the absence of menstrual periods and can be caused by a variety of factors such as pregnancy, hormonal imbalances, and certain medical conditions. While amenorrhea can be a symptom of an eating disorder such as anorexia nervosa or bulimia, the presence of amenorrhea alone is not indicative of an eating disorder.

C. Bulimia: Bulimia is an eating disorder characterized by episodes of binge eating followed by purging behaviors such as vomiting or using laxatives. While Ashley may be dissatisfied with her weight and body image, there is no indication in the prompt that she engages in binge eating and purging behaviors, which are the hallmark symptoms of bulimia.

D. Anorexia nervosa: Anorexia nervosa is an eating disorder characterized by a persistent restriction of food intake and an intense fear of gaining weight or becoming fat, even when underweight. Ashley's preoccupation with her weight and desire to be thinner, despite being underweight, are consistent with the diagnostic criteria for anorexia nervosa. Therefore, the correct answer is OD.

The symptoms shown by Ashley is due to anorexia nervosa.

Anorexia nervosa is an eating disorder marked by an abnormally low body weight, a strong fear of gaining weight, and a skewed sense of weight.

Here,

A persistent limitation in food consumption and a strong fear of gaining weight or getting fat, even while underweight, are the hallmarks of anorexia nervosa, an eating disorder.

The symptoms shown by Ashley is due to anorexia nervosa.

Food isn't really a factor in anorexia. To attempt to deal with emotional issues in this way is exceedingly unhealthy and occasionally fatal. When you have anorexia, you frequently confuse being thin with being valuable.

Like other eating disorders, anorexia may control your life and be very challenging to recover from. But with treatment, you can rediscover your identity, adopt healthier eating practices, and undo some of anorexia's severe side effects.

Hence, option D.

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