Sanjay uses 225 N of force to move a wheelbarrow 18 m at a velocity of 1.8 m/s. What was the amount of power used?

Answer:

What is the full question?

Answer:

Take upwards as positive and downwards as negative

Explanation:

the time to reach the maximum height is 2,04s, therefore the time to come back down will be doubled that which is 4,08s

Hope this helps !!

Ashley throws a baseball into the air at 20 m/s, the time needed  to reach the maximum height is 2,04s, therefore the time to come back down will be doubled that which is 4,08s.

length measurement can be defined as an act for the identification of the length of  the object in some standard or non-standard units.

The most common units of length   are U.S. customary units and the metric units which mainly include SI and non-SI units, others are  British Imperial units are also still used in some countries.

Other units of length also include kilometres, nanometre, millimetres, centimetres, metres, decimetres  where as the Imperial and U.S. customary systems, basic unit of length is the yard.

other units are thou (1⁄1000 of an inch), line (1⁄12 of an inch), inch (25.4 mm), foot (12 inches, 0.3048 m)

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The acceleration of the boat is 2.8 m/s².

Acceleration is the fee of trade of the rate of an object with admire to time. Accelerations are vector quantities. The orientation of an item's acceleration is given by means of the orientation of the internet pressure appearing on that object.

The acceleration is the rate of change of displacement. Acceleration is the price of an alternative to speed. velocity is a vector amount as it consists of each magnitude and path. Acceleration is also a vector amount as it's far just the rate of alternate speed. Newton s 2nd law of movement additionally referred to as the law of force and Acceleration, a pressure upon an item causes it to accelerate consistent with the method internet force = mass x acceleration.

So the acceleration of the object is at once proportional to the pressure and inversely proportional to the mass.

Calculation:-

v = u - at

8 = 22 - a×5

a = (22 - 8)/5

a = 2.8 m/s²

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Given data

*The given length of the cable is L = 15.4 m

*The given angle is

The formula for the height is given as

Substitute the values in the above expression as

The formula for the velocity of the ball at the bottom of its swing is given as

Answer:

your answers is option d 75 ohms

25mn type of focal length was primarily used in citizen kane.

The focal lengths and lenses used by 19 notable directors are analyzed in a new video essay by Wolfcrow, starting with Orson Welles' use of 25mm for Citizen Kane and 18mm for Touch of Evil.

In Orson Welles' Citizen Kane, deep focus was frequently used to provide the audience with insight into Charles Foster Kane's thoughts or to reveal more about his life. With deep focus, the foreground, middle ground, and backdrop are all sharply in focus at once.

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The electric field between the disks is 8.43*10^6 N/C

What is electric field of charged spherical spheres ?
A simple application of Gauss' law will yield the electric field of a conducting sphere with charge Q. In the case of a sphere-shaped Gaussian surface with radius r > R, the electric field is directed outward and has the same strength at every point along the surface. Simply multiplying the electric field by the spherical surface's area yields the electric flux.

The electric field is observed to be the same as a point charge Q at the sphere's centre. A Gaussian surface at r R will encompass no charge because all the charge will be on the conducting surface, and by virtue of its symmetry, can be observed to be zero at all places inside the sphere

Diameter of the disks = 1.6cm

Radius of the disks = 1.6/2= 0.8cm= 0.008m

gap between 2 disks d = 1.2mm = 0.0012m

Charge Q = ±15nC

E =σ/ϵ = Q/Aϵ = 15*10^-9/(8.854*10^-12*3.14*(0.008^2))

                       =  8.43*10^6 N/C

here,

σ (sigma) is surface charge density (C/m^2) and

ϵ (epsilon) is permittivity of free space

The electric field between the disks is 8.43*10^6 N/C

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Coal is used to produce the majority of the electricity in the Philippines. The country's total electricity production in 2021 was 47.6% fueled by fossil fuels. Another 10.7% of the fuel was natural gas. In that year, fossil fuels accounted for about 76 percent of the nation's electricity output.

Geothermal energy is heat that rises from the earth's interior. Geothermal energy travels to the Earth's surface in the form of water or steam. Depending on its properties, geothermal energy can be utilized to produce clean electricity or be used for heating and cooling.

Due to its location along the Ring of Fire zone of Pacific volcanoes, the Philippines is among the top geothermal energy producers in the world.  On March 9, 2018, the nation turned on the 12-megawatt Maibarara Geothermal Power Plant-2 in Santo Tomas, Batangas.

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Answer:

I am not understanding your question

Answer:

By the law of conservation of energy,

m(gh + 1/2u^2)= m(1/2v^2) ---------- cancelling m from both side

=> 4.8 * 200 + 1/2 * (30)^2 = 1/2(v^2)

=> 1460 + 450 = v^2/2

=> 2410 * 2 = v^2

=> v = √4820

= 69.426m/s

Answer: 69.426 m/s

Answer:

It produces grooves and lands.

Answer:

Explanation:

40 km/h

Answer:

Explanation:

Given:

V₀ = 43 m/s

H = 108 m

g = 9.8 m/c²

____________

L - ?

Vₓ - ?

Vy - ?

1)

Fall time:

H = g*t² / 2

t = √ ( 2*H / g) = √ (2*108 / 9.8) ≈ 4.7 s

L = V*t = 43*4.7 ≈ 200 m

2)

Vx = V₀ = 43 m/s

Vy = - g*t = - 9.8*4.7 ≈ - 46 m/s

The ranking of the boy's location in the ferris wheel ridding motion above comparing his felt weight from the highest to the lowest is 1, 2 and 4 tie, 3.

The correct answer choice is option c.

The correct image is attached.

In motion above by the boy, the boy feels he weighs the greatest at location 3 among all the location simply because there is a force known as centripetal force which technically acts upward at that point which makes more weight be felt among all.

However, at the locations 2 and 4, the force actually was acting side ways, which would still not affect the weight from 3 in the circular movement. And at location, the weight felt feels the lowest among all.

In conclusion, the locations of the boy on a ferris wheel ridding from the greatest is highest to the lowest is 1, 2 and 4 tie, 3.

Complete question:

The diagram above represents a Ferris wheel-a circular ride that rotates in a vertical circle with seats where people sit. The numbers correspond to a seat in four difference places as the Ferris wheel rotates.

Imagine a boy sitting in this seat riding the ride with the Ferris wheel rotating in the direction shown (at constant speed). Rank the locations according to how much the boy would feel like he weighs,greatest first.

a. 1, 2, 3, 4

b. 1 and 3 tie, 2 and 4 tie.

c. 1, 2 and 4 tie, 3

d. 4, 3, 2, 1.

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The temperature increase of the ball is 1.63 ⁰C.

The potential energy possessed by the ball at the given height is calculated as follows;

P.E = mgh

where;

P.E = (10) x (9.8) x (150)

P.E = 14,700 J

If half of the energy of the ball is converted into heat energy, then the amount of heat capacity is calculated as follows;

Q = 0.5(P.E)

Q = 0.5 x 14,700

Q = 7,350 J

The increase in the temperature of the temperature of the ball is calculated as follows;

Q = mcΔθ

where;

Δθ = Q/mc

Δθ = (7350) / (10 x 450)

Δθ = 1.63 ⁰C

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B. The reactants have higher potential energy, and energy is absorbed is the statement that best describes the total energy change of the system.

The difference in the amounts of chemical energy that are stored in the products and reactants accounts for the energy change in a chemical reaction. Enthalpy refers to the system’s heat content or stored chemical energy.

Potential energy can be described as the energy which a body possess because of its position. The potential energy can also be said as stored energy. The energy diagram that shows the changes in energy is called as a chemical reaction.

Potential energy and the Reaction progress are shown in the problem and from this the reactants are seen as the substance which reacts and form one or more than one product.

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For a person who has not eaten for four days and then finally has a candy bar, your food drive will be reduced, but your food need will no.t

Food refers to any substance that is taken into the body and which contains nutrients that provide energy for the body and also provide the body with materials required for the growth and repair of body tissues.

There are seven classes of food that the body needs and they include:

Food drive refers to the urge to eat food and may be easily satiated.

Food need on the hand has to do with all the food that the body needs for healthy growth and is not easily met.

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(a) Average speed is 42 km/h

(b) Average velocity is 31.21 km/h (25° S of E)

(c) Average speed and average velocity are 3.73 km/h and 0 km/h respectively.

The average speed is calculated by distance travelled divided by time. The distance travelled is 14.0 km and time taken for the trip is 20.0 min.

The time taken for the trip in hours = 20.0/60 = 0.33 hr

Average speed = 14.0/0.33 = 42 km/h

The displacement is the shortest distance between two points. For this trip the displacement is 10.3 km in the direction 25.0° south of east. Then the average velocity is calculated by change in displacement divided by time.

Average velocity = (10.3-0)/0.33 = 31.21 km/h (25° S of E)

Average speed of the total trip = (14 + 14)/7.5 = 3.73 km/h

Average velocity of the total trip = (Final position - Initial position)/time = (0 - 0)/7.5 = 0 km/h

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A pot of water is heated using a camping stove. The stove supplies 115,000 J of energy to the 0.54 kg of water. Given that the specific heat.

If a plant's soil has too much water, the roots can rot, and the plant can't get enough oxygen from the soil. If there is not enough water for a plant, the nutrients it needs cannot travel through the plant. A plant cannot grow if it doesn't have healthy roots, so the proper balance of water is key when growing plants. Water level significantly affected seed germination and seedling establishment. The wet soil treatment germination rate (83%) was much higher than the waterlogged (56%) and submerged (44%) treatments.  As water emerges or evaporates between the plant's stomata, water is pushed up from the soil through the roots and into the plant. Water conveys with its minerals and nutrients from the soil that are vital for plant growth.

so we can conclude that A pot of water is heated using a camping stove. The stove supplies 115,000 J of energy to the 0.54 kg of water. Given that the specific heat.

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      The rate at which an object's velocity with respect to time changes is referred to as acceleration in mechanics. It is a vector quantity to accelerate (in that they have magnitude and direction). The direction of the net force applied on the item determines the object's acceleration.

        The definition of acceleration (symbol: a) in physics or physical science is the rate of change (or derivative with respect to time) of velocity.

       The equation a = v/t denotes acceleration (a), which is the change in velocity (v) over the change in time (t).

     The displacement that an object or particle experiences with respect to time is expressed vectorially as velocity. The meter per second (m/s) is the accepted unit of velocity magnitude (also known as speed).

         When an item is travelling at a constant speed, its acceleration can be zero. There won't be any acceleration because the speed is constant, hence there won't be any change in speed. Zero acceleration is shown by the graph above.

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D. cannon

Newton imagined a cannon on top of a mountain. Without gravity, the cannonball should move in a straight line. If gravity is present, then its path will depend on its velocity.( A and B)

If there were no forces of gravitation or air resistance, the body should follow a straight line away from Earth, in the direction that it was projected (E), If a gravitational force acts on the projectile, it will follow a different path depending on its initial velocity.

so, we can conclude the answer is

D. cannon

I hope this helps you

Answer:

150 km/h

Explanation:

After the first two hours, you have traveled 150km (given) which means that you still have 300km - 150km = 150km left to travel. Since you have already traveled 2 hours, that means you must travel the remaining 150km in 3hours - 2hours = 1hour. Assuming the answer is in km/hour, you will need to travel at a speed of 150km/1h = 150km/h for the remaining of the distance.

When a ray of light passes from the rarer medium to the denser medium, it bends towards the normal.

When the ray of sunlight moves from the air into the denser medium of a pound, the light ray will slow down as it passes rarer to denser medium. It bends towards the normal.

Thus, the correct option is (D).

As one proceeds down the group of halogens, one would find that the reactivity of the elements decreases. This is because the ionic radii increase down the group. And as the ionic radii increase, the nucleus of halogens exerts a weaker pull on the valance electrons.

Thus the correct answer is option d.

The push exerted on one object when it has a collision with another object these forces are also referred to as force pairs, action forces, and reaction forces.

A collision, also known as an impact, occurs when two bodies, such as two pool cues, a golf club and a ball, a hammer and a nail, two railroad cars when joined, or a falling object and a floor, suddenly and violently collide. Collisions help physicists understand the characteristics of atomic and subatomic particles.

Collisions happen when two objects come into contact. In most cases, conservation of momentum and conservation of energy are used to solve collision-related problems. Collisions might be of two different types: Momentum is conserved in inelastic collisions, whereas it is also conserved in elastic collisions together with kinetic energy.

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The time taken by the rocket to reach maximum height is 6.37 s. The velocity of the rocket at maximum height is 62.43 m/s. The initial velocity of the rocket is 0. The maximum height of the rocket is 198.8 m.

1 ) Total time taken = 12.74 s

Time taken to reach maximum height = Time taken to reach the ground from the maximum height

Time taken to reach maximum height = 12.74 / 2

Time taken to reach maximum height = 6.37 s

2 ) a = g = 9.8 m / s²

v = u + a t

v = 0 + ( 9.8 * 6.37 )

v = 62.43 m / s

3 ) The initial velocity of the rocket is zero

4 ) According to equations of motion,

s = u t + 1 / 2 a t²

s = 0 + ( 1 / 2 * 9.8 * 6.37² )

s = 198.8 m

Therefore,

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If there are six water molecules, the following applies;

A molecule is the smallest particle of a specific element or compound that retains the chemical properties of that element or compound i.e. two or more atoms held together by chemical bonds.

Atoms of an element are usually shown in the chemical or molecular formula, which is a notation indicating the number of atoms of each element present in a compound.

According to this question, six water molecules are given as follows: 6H₂O

This means that there are 6 × 2 = 12 atoms of hydrogen and 6 × 1 = 6 atoms of oxygen in the 6 molecules of water.

Electrolysis is the chemical change produced by passing an electric current through a conducting solution or a molten salt.

If six molecules of water undergoes electrolysis, there would be 12 atoms of hydrogen and 6 atoms of oxygen.

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Answer:

A

Explanation:

you predicted it in the past and assumed the outcome of your result and they was a difference of 10 percent