at the maxmum highet the V x = zero

True
false

The Height of the roof is 225 feet .

Calculation :

y = h - gt2/2 = 0;

h = gt2/2;

v(t) = dy/dt = - gt;

t = - v(t)/g;

h = g/2·v2(t)/g2

= v2(t)/(2g)

= 120²ft2/s²/(2·32ft/s²) =

225 ft

In mathematics, height is defined as the vertical distance from top to bottom of an object. Also called "height". The term geometry height refers to the measurement of an object along the coordinate geometry's y-axis.

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If 2.5 minutes is the maximum access time for a magnetic tape, 1.25 minutes is the average access time.

how long it takes to get a piece of information out of storage is access time. If the file holding the necessary data is on magnetic tape instead of a magnetic disc, the access time may be measured in minutes rather than in milliseconds.

The average access time is the sum of the average seek time, the command overhead, and the average latency.

Given that:  the maximum access time for a magnetic tape = 2.5 minutes.

Hence, the the average access time = 2.5 minutes/2 = 1.25 minutes.

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Answer:

the particles that heat up the gas become more active (vibrating around)

Answer:

0J

Explanation:

PE=mgh

PE=  1000kgx9.8m/s^2x0m

PE = 0J

The real tree house should have 88 windows.

A physical model that is geometrically similar to an object is called a scale model. Scale models may be larger than small prototypes like anatomical structures or subatomic particles, but they are often smaller than huge prototypes like cars, buildings, or people.

In the scale model, the tree house has 2 windows. The scale given is 1:44, which means that 1 unit in the scale model represents 44 units in the actual tree house.

Since there are 2 windows in the scale model, we can determine the number of windows in the actual tree house by multiplying 2 by 44.

2 windows in the scale model * 44 units per window = 88 windows in the actual tree house.

Therefore, the actual tree house they want to build will have 88 windows.

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Complete question:

Two students make a model of a tree house they want to build. The scale is 1:44. In the scale model, the tree house has 2 windows.

How many windows should the real tree house have?​

The force is  1.1 * 10^-32 N

Coulomb's law is a fundamental law in physics that describes the electrostatic interaction between charged particles. It states that the force between two point charges is proportional to the product of their charges and inversely proportional to the square of the distance between them. Mathematically, Coulomb's law can be written as:

F = k * q1 * q2 / r^2

where F is the electrostatic force between the charges q1 and q2, r is the distance between the charges, and k is the Coulomb constant, which is approximately equal to 9 x 10^9 N * m^2 / C^2. The force F is a vector quantity, meaning that it has both magnitude and direction, and is directed along the line joining the two charges.

We have that;

F = Kq1q2/r^2

F = 9 * 10^9 * 1.6*10^ -19 * 3.2*10^ -19/(0.02)^2

F = 1.1 * 10^-32 N

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The particles or energy in a transverse wave travel up and down, perpendicular to the direction of the wave travel.

Electromagnetic waves are type of wave that do not require material medium for their propagation.

This type of waves travels in vacuum or in open medium.

Examples of electromagnetic waves include the follows;

Electromagnetic waves are known as transverse waves due to their mode of propagation.

In transverse wave, the particles of the medium travels perpendicular to their mode of vibration.

Thus, the particles or energy in a transverse wave travel up and down, perpendicular to the direction of the wave travel.

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Question

Select all the correct answers.

Who are two target audiences for the passage "Gluten Free"?

a) people interested in weight loss.

b) doctors who treat people with celiac disease.

c) people who educate others about health decisions.

d) people with gluten sensitivity.

e) people considering making a lifestyle change

Passage: Gluten Free

Many people consider products made from whole grains, such as bread and cereal, to be delicious as well as nutritious. However, gluten allergies are on the rise, and many people can

no longer eat these types of food. Gluten is a type of protein found in wheat, rye, and barley. This substance can also be found in sauces, soups, and salad dressings. The widespread

use of gluten can make it difficult to know which foods are safe for people with gluten allergies. Allergic responses to gluten can range from stomach aches to acne, and they can even cause more serious health issues in some individuals. A serious allergy to gluten is called celiac disease. In the United States, millions of people suffer from this disorder. Celiac is a digestive

disease that hinders people from properly absorbing nutrients from food. This disease can lead to various health issues, so people with these allergies need to be careful about the food.

Eating in restaurants can be difficult for people with celiac disease. However, there are things people can do to ensure that their food is safe. For example, calling ahead to see if the

restaurant has a gluten-free menu is a start. Even when at the restaurant, people should not be afraid to ask the server or they eat.

Reset

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Answer:

d) people with gluten sensitivity

e) people considering making a lifestyle change

Explanation:

Gluten can be defined as protein that is found is starchy grains such as wheat, rye, barley e.t.c.

One of the main or major functions of gluten is when wheat is used to make dough for bread, pasta, pizza e.t.c , the stretching or elasticity of the dough is due to the presence of gluten in the dough.

Despite these desirable quality, it has been discovered the people are allergic to gluten and these days we have gluten free foods or restaurant that served gluten free foods such as bakes, cakes e.t.c.

One of the allergies of gluten is called Celiac disease. Celiac disease is an allergy that makes it difficult for the human body to be able to digest gluten as well absorbing other food nutrients. This results in symptoms such as flatulence, bloating, diarrhea, vomiting, stomach pain, weight loss e.t.c.

We have been educated in the passage that although it quite difficult for people with Celiac disease to eat at restaurants, but in other to effectively manage the allergy, when you want to eat out, it is best to call the restaurant first to verify if they have gluten free meals or ask the waiter if they have gluten free meals.

The two target audience for the above passage in the question titled "Gluten Free" are:

d) people with gluten sensitivity

e) people considering making a lifestyle change

Answer:

people with gluten sensitivity and people considering making a change in life style

Explanation:

The sun is Yellow, red, orange, and blue. Therefore option B is correct.

The star is moving toward an observer. Therefore option B is correct.

39. The type of radioactive decay represented by the equation provided Gamma. Therefore option A is correct.

40. The statement is completed correctly by the information which states that the coal in Alberta has a lower carbon content than coal in other parts of Canada, resulting in reduced greenhouse gas emissions.

29. graph B depicts the relationship between gravitational field strength and the mass of the International Space Station orbiting Earth.

30. The correct sequence of colors representing the changing temperature from the surface to the atmosphere of the sun is Yellow, red, orange, and blue. Therefore option B is correct.

1. When a star undergoes a blue shift, it indicates that the star is moving toward an observer. Therefore option B is correct.

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Answer:

\(k.e = \frac{1}{2} m {v}^{2} \\ {v}^{2} = {u}^{2} + 2gs \\ {v}^{2} = 0 + (2 \times 9.8 \times 15) \\ v = 17.1 \: m {s}^{ - 1} \\ k.e = \frac{1}{2} \times m \times {17.1}^{2} \\ = 147m \: joules \\ m \: is \: mass\)

Kinetic energy of the rock just before hitting the water is 147m joules where m is the mass of the object.

The kinetic energy of an object is defined as the energy it possesses due to its motion. It is the work required to accelerate a body of a given mass from rest to its stated velocity. Having gained this energy during its acceleration, the body maintains the kinetic energy as long as its momentum does not change.

It is directly proportional to the mass of the object and the square of its velocity:\(K.E. = 1/2 mv^2\).

Where, m= mass of the object

v= velocity

So if the units of mass are in kilograms and the units of velocity are meters per second, then kinetic energy has units of kilogram-meter squared per second squared.

For above given information,

\(K.E= 1/2 mv^2\\v^2= u^2 + 2gs\\ \\v^2= 0+ (2* 9.8*15)\\v^2= 294 m/s\\So, K.E. = 1/2 m* 294 m/s\\K.E.= 147m joules\)

Thus, Kinetic energy of the rock just before hitting the water is 147m joules where m is the mass of the object.

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Color: Both the bromine gas and steak have a brownish color.

Bromine gas is a reddish-brown, nonflammable, and highly toxic gas with a very strong, unpleasant odor. It is composed of two heavy, diatomic, halogen molecules, Br2, and is the only nonmetal element that exists as a liquid at room temperature. Bromine gas is denser than air and is soluble in water and organic solvents.

Texture: The bromine gas is a gas and therefore has no texture, while the steak is solid and has a firm texture.
Temperature: The bromine gas is a gas and therefore has a lower temperature than the steak, which is at room temperature.
Bromine Gas and Juice:
Color: The bromine gas is brownish and the juice is a yellowish or orange color.
Texture: The bromine gas is a gas and therefore has no texture, while the juice is a liquid and has a smooth texture.
Temperature: The bromine gas is a gas and therefore has a lower temperature than the juice, which is at room temperature.

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cut the square and make it a triangle

Answer:they are a renewable source

Explanation: because they come from the ocean and the ocean is 75% of the world so there will always be waves.

Answer:

Explanation:

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

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

f is the force

a is the acceleration

From the question we have

\(m = \frac{500}{2} \\ \)

We have the final answer as

Hope this helps you

The kinetic energy of the arrow after it is being shot is 70 J. Hence, option (B) is correct.

Kinetic energy is the energy that an object possesses due to its motion. If we want to accelerate an object, we must apply a force. The application of force forces us to work. After the work is done, the energy has been transferred to the object and the object will move at a new constant speed.

Given data:

The magnitude of potential energy is, U = 70 J.

Because, assuming there is no net loss of energy, this is absolutely consistent with conservation of energy. According to the law of conservation of energy, "The total energy of a system remains conserved. Energy can change form or can transfer from one system to another".

So, the entire potential energy of the arrow will get converted into the kinetic energy. That is,

U = KE

KE = 70 J

Thus, we can conclude that the kinetic energy of the arrow after it is being shot is 70 J.

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The deceleration for a car traveling at 55 km/h can be interpolated to be 7.06 m/s².

A) To find whether the car will stop in time or not, we have to use the below formula:Where,

t = time taken to stop

v = initial velocity

u = final velocity

a = deceleration distance = vt + 0.5at²

We can use the above formula and find the distance covered by the car before stopping.

If the distance covered by the car is less than 40 m, then the car will stop in time and the child will be saved. If the distance is greater than or equal to 40 m, then the car will not be able to stop in time and the child will be hit.

For a car traveling at 55 km/h, the speed is 15.28 m/s. The deceleration values for different cars can be found from the table below:Speed (m/s) Braking Distance Toyota Corolla
(m) Nissan 200SX
(m) Mercedes C36
(m) Ferrari550 Maranello
(m) Lexus LS400
(m)60 14.9 17.2 20.1 24.8 16.070 20.3 23.4 27.4 33.8 21.880 26.5 30.6 35.8 44.1 28.490 33.6 38.7 45.3 55.8 36.0100 41.5 47.8 55.9 68.9 44.4110 50.2 57.8 67.7 83.4 53.8120 59.7 68.8 80.5 99.2 64.0

Therefore, Interpolation shows that the deceleration for an automobile moving at 55 km/h is 7.06 m/s2. .

Using the formula for deceleration with initial velocity of 15.28 m/s, we get the distance covered by the car before stopping to be:distance = (15.28)² / 2 * 7.06 = 19.68 m

As the distance covered by the car is less than 40 m, the car will stop in time.

B) The limitations of this model are:This model assumes that the car is traveling on a flat surface and the road conditions are good.

The model does not take into account the reaction time of the driver and assumes that the driver reacts immediately to the child running onto the road.

The model does not take into account the age of the vehicle, the weight of the vehicle, the condition of the brakes and tires, and other factors that may affect the braking distance of the car.

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A suitcase's kinetic frictiοn cοefficient with the grοund is 0.272. the required wοrk is 2164 J.

A fοrce acting between surfaces that are mοving is knοwn as kinetic frictiοn. A fοrce is applied in the οppοsite directiοn οf a bοdy's mοvement οn the surface. The kinetic frictiοn cοefficient between the twο materials will determine the fοrce's magnitude.

The relative speed at which the surfaces in cοntact are mοving is nοt a factοr in determining the amοunt οf kinetic frictiοn. Kinetic frictiοn is different frοm οther frictiοn-like phenοmena like air resistance and viscοus fοrce in this way.

Evaluating:

let the distance is d

Using wοrk energy theοrem:

wοrk dοne = u × m × g ×h

642 = 0.272 × 71.5 × 9.8 × d

d = 3.37 m

the suitcase can be pushed a distance οf 3.37 m fοr the wοrk dοne

wοrk needed = change in kinetic energy

wοrk needed = 0.5 × 73 × 7.7²

wοrk needed =  2164 J

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Answer:

B.

Explanation:

In a scientific context, “pure” denotes a single type of material. Ostensibly, compounds contain more than one type of material. Yet both compounds and elements are considered pure substances. Pure compounds are created when elements combine permanently, forming one substance.

Answer:

(See explanation below for further details)

Explanation:

(The following question is written in Spanish and for this purpose the answer will be written in such language).

1) La propagación del calor a través de sólidos, así como líquidos o gases en condiciones estacionarias se denomina conducción.

2) La propagación del calor a través de líquidos o gases en movimiento se denomina convección.

3) La propagación del calor a través del vacío o sin necesidad de un medio material se denomina radiación.

The direction should the boatman steer when he wants to cross a canal that is 3 km wide and wants to land at a point 2 km upstream from his starting point. The current in the canal flows at 3.5 km/h and the speed of his boat is 13 km/h =  9.45 m in y-axis

The speed of the boat respect to the water:

\(\sqrt{x^{2} +y^{2} }\) = 13

⇒ x² + y² = 169

And the current x = 3 (y - 3.5) / 2

169 = {3 (y - 3.5) / 2}² + y²

(4 x 169) = 9 (y - 3.5)² + 4y²

676 = 9 (y² - 7y + 12.25) + 4y²

13 y² - 63y - 565.75 = 0

Hence, we can use the quadratic formula:

y = \(\frac{63\sqrt{63^{2}+ (4)(13) (565.75)} }{26}\)

≈ 9.45

So, the direction the boatman should steer = 9.45 m in y-axis

The question is incomplete, it should be:

A boatman wants to cross a canal that is 3 km wide and wants to land at a point 2 km upstream from his starting point. The current in the canal flows at 3.5 km/h and the speed of his boat is 13 km/h. In what direction should he steer?

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Warm, moist air starts to uplift in the initial stages of thunderstorm development because of a combination of different lift mechanisms.

One of these is convective lift, which occurs when warmer air rises due to its buoyancy. This is because warm air is less dense than cooler air, and so it is more easily displaced by the cooler air. Another lift mechanism is orographic lift, which is the result of air being forced to rise as it moves over a mountain or hill. Finally, frontal lift occurs when a cold front moves into an area of warm, moist air, forcing it to rise. All of these lift mechanisms can combine to cause warm, moist air to be lifted and form a thunderstorm.

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A moving truck, a moving trailer, and a rolling block are three instances in which an object's mass determines the momentum primarily.

The velocity of a body or object determines its direction of motion.

Momentum is the product of mass and velocity of an object. It is mathematically represented as,

P = m* v

where,

m is the mass of the object

v is the velocity of the object

Following are three instances where an object's mass acts as the primary determinant of its momentum:

A moving truck

A moving trailer

A rolling block

The three examples given above shows three objects with heavy mass.

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(a) Yes, an electric field can exert a force on a stationary charged object. A stationary charged object will experience a force in the direction of the electric field due to the Coulombic interaction between the charges.

(b) No, a magnetic field does not exert a force on a stationary charged object. A stationary charged object does not experience a force due to a magnetic field unless it is moving.

(c) Yes, an electric field can exert a force on a moving charged object. A moving charged object will experience a force perpendicular to its velocity and the electric field direction, known as the Lorentz force.

(d) Yes, a magnetic field can exert a force on a moving charged object. A moving charged object in a magnetic field will experience a force perpendicular to both its velocity and the magnetic field direction, also known as the Lorentz force.

(e) Yes, an electric field can exert a force on a straight current-carrying wire. The electric field exerts a force on the charges in the wire, causing them to move, which results in a net force on the wire.

(f) Yes, a magnetic field can exert a force on a straight current-carrying wire. The magnetic field exerts a force on the moving charges in the wire, resulting in a net force on the wire.

(g) Yes, an electric field can exert a force on a beam of moving electrons. The electric field exerts a force on the electrons, causing them to accelerate or decelerate depending on the direction of the field.

(h) Yes, a magnetic field can exert a force on a beam of moving electrons. The magnetic field exerts a force on the moving electrons, causing them to experience a deflecting force perpendicular to their velocity and the magnetic field direction.

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Scientists currently use planetary rovers to collect data on mars rovers collect infrared spectra, drill cores, photographs.

Designed to move across the solid surface of a planet or other planetary mass celestial bodies, a rover (or occasionally planetary rover) is a planetary surface exploration tool. Others have been created as partially or entirely autonomous robots. Some rovers have been created as ground vehicles to transfer members of a human spaceflight crew. When a lander-style spacecraft is used to land on a planet (other than Earth), rovers are often built to collect data about the topography and sample the crust, including dust, dirt, rocks, and even liquids. They are vital resources for space exploration. Due to the slow speed of radio communications, rovers that land on celestial worlds other than the Earth, like the Mars Exploration Rovers, cannot be remotely operated in real-time.

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Answer:

600m

Explanation:

30×20 at a constant speed is 600m.

Answer:

They will NOT fall at the same rate because of the force. Hope this helps! Have a blessed day!

Explanation:

Answer:

On the off chance that no air obstruction is available, the pace of plunge relies just upon how far the item has fallen, regardless of how substantial the article is. This implies that two articles will arrive at the ground simultaneously in the event that they are dropped at the same time from a similar stature. ... In air, a quill and a ball don't fall at a similar rate. Therfor this is what happens when you drop a feather and a ball at the same rate.

Explanation:

Answer:

geothermal energy is the answer