Every football field has two 300kg field goal posts separated by 110m of football field (that includes the endzones). What is the gravitational force between the two goal posts?

Answer:

The initial speed of the sprinter was 2.2 m/s

Explanation:

Constant Acceleration Motion

It's a type of motion in which the velocity of an object changes by an equal amount in every equal period of time.

The following relation applies:

[tex]v_f=v_o+at[/tex]

Where a is the constant acceleration, vo the initial speed, vf the final speed, and t the time.

The sprinter speeds up from an unknown initial speed to vf=3 m/s in t=2 seconds with an acceleration of [tex]a=0.4~m/s^2[/tex].

To find the initial speed, we solve the equation for vo:

[tex]v_o=v_f-at[/tex]

Substituting the values:

[tex]v_o=3-0.4*2[/tex]

[tex]v_o=3-0.8[/tex]

[tex]v_o=2.2~m/s[/tex]

The initial speed of the sprinter was 2.2 m/s

Answer:

Explanation: It is inertia that causes the passengers to move toward the right side of the car. As the car swerves to left, passengers' body continues their motion as hitherto and as such it causes the passengers to move toward the right side of the car.

Explanation:

Energy should be transferred to an object in order to move it. ... This amount of energy transferred by the force to move an object is called work or work done. Thus, the relation between Work and Energy is direct. That is, the difference in the Kinetic energy of an object is work done by an object.

Answer:

the theme is acceptably of others

Explanation:

hope this helps

Answer:

B. Law of Conservation of Mass

Explanation:

In other words, the mass of any one element at the beginning of a reaction will equal the mass of that element at the end of the reaction. If we account for all reactants and products in a chemical reaction, the total mass will be the same at any point in time in any closed system.

Answer:

1. Net force = 90 N

2. Acceleration = 9 m/s²

Explanation:

From the question given above, the following data were obtained:

Mass (m) of bag = 10 Kg

Force applied 1 (Fₐ₁) = 45 N

Force applied 2 (Fₐ₂) = 60 N

Force of friction (Fբ) = 15 N

Net force (Fₙ) =?

Acceleration (a) =?

1. Determination of the net force acting on the bag.

We'll begin by calculating the total force applied on the bag.

Force applied 1 (Fₐ₁) = 45 N

Force applied 2 (Fₐ₂) = 60 N

Total force applied = Fₐ₁ + Fₐ₂

Total force applied = 45 + 60

Total force applied = 105 N

Finally, we shall determine the net force acting on the bag. This is illustrated below:

Total force applied = 105 N

Force of friction (Fբ) = 15 N

Net force (Fₙ) =?

Net force (Fₙ) = Total force applied – Force of friction (Fբ)

Net force (Fₙ) = 105 – 15

Net force (Fₙ) = 90 N to the right

2. Determination of the acceleration of the bag.

Mass (m) of bag = 10 Kg

Net force (Fₙ) = 90 N

Acceleration (a) =?

Force (F) = mass (m) × acceleration (a)

90 = 10 × a

Divide both side by 10

a = 90 / 10

a = 9 m/s²

Thus, the acceleration of the bag is 9 m/s² to the right.

Answer:

I = 0.75 Amp

Explanation:

Ohm's Law

Ohm's law states that the current (I) through a conductor between two points is directly proportional to the voltage (V) across the two points. The constant of proportionality is called the Resistance (R) of the conductor.

The formula can be expressed as:

V = I.R

The intensity of the current through a resistor can be calculated by solving the equation for I:

[tex]\displaystyle I=\frac{V}{R}[/tex]

A flashlight bulb is an example of a resistor with the specific task to emit light when it's hot enough.

The potential difference (or voltage) is V=6 V and the resistance is R=8Ω, thus the current is:

[tex]\displaystyle I=\frac{6~V}{8~\Omega}[/tex]

I = 0.75 Amp

Answer:

25 meters per second

Explanation:

2 halves so you find the average of the two by adding 20+30=50 then dividing it by number of halves, this is 2.

50/2=25

Answer:

I think its radiation

Explanation:

Conduction is the transfer of heat through solids (A)

Convection is the transfer of heat through liquids or gasses (B)

Radiation is the transfer of heat through em waves (C)

A scalar quantity is different from a vector quantity as the scalar quantity as only magnitude and no direction whereas the scalar quantity has both the magnitude and direction.

A scalar quantity is different from a vector quantity in many aspects such as a scalar quantity has only magnitude, but no direction. However, a vector quantity has both the magnitude and direction. Every scalar quantity is one-dimensional only. Whereas, vector quantity can be one, two or three-dimensional.

Speed is a scalar quantity, velocity is a vector quantity, distance is a scalar quantity, force is a vector quantity, and kinetic energy is a vector quantity.

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Answer:

The answer is C Skeletal System

Answer:

Explanation:

It helps engineer automobiles. Every day companies are looking for brighter ideas for cars and other vehicles

Answer:

Automotive engineers work as part of a team responsible for vehicle design, development, manufacture and testing. Automotive engineers are involved in the design, manufacture, distribution, marketing, sales and after-sales care of cars (including racing cars), motorbikes and other commercial vehicles.

Explanation:

Answer:

20 m/s

Explanation:

initial velocity, u= 25m/s

u has two components. one in horizontal and in one vertical.

so,

u sin theta = vertical component.

=> u sin theta = 25× 4/5

= 20 m/s

Answer: C

Explanation: Mass is eliminated when equating elastic potential energy with kinetic energy.

Mass is eliminated when equating gravitational potential energy with kinetic energy. Therefore option D is correct.

The energy that an item has or acquires when its location changes as a result of being in a gravitational field are known as gravitational potential energy. Gravitational potential energy can be defined as energy that has a connection to gravitational force or gravity.

The energy of gravity, or gravitational potential energy, is also related to the Earth. An object has gravitational potential energy if it is at a certain height above the Earth's surface. The object's potential energy is transformed into kinetic energy when it is released. Due to the rule of conservation of energy, the sum of the two is always constant.

The test object is positively pulled by the gravitational force from infinity to a location inside the gravitational field. Because gravitational force is inverse square, it is 0 at infinity. As a result, infinity is used as the starting point.

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Number 3

plzlzllzllz mark as a brainiest!

Answer:

b

Explanation:

yes

Answer:

surface waves

Explanation:

they are on the surface of the ocean

Answer:

Spacecraft Propulsion Systems Spacecraft propulsion is based on jet propulsion as used by rocket motors.

Explanation:

The maximum air temperature permitted for delivery vehicles when receiving shell eggs Shell eggs Receive at an air temperature of 45°F (7°C) or lower.

When receiving raw shell eggs you must reject the delivery if they don't conform to the standard range of conditions. Raw egg shells at temperature of 45°F or below should be rejected during delivery as a result of the possibility of the presence of  pathogens on them which exposes individuals to diseases.

The common pathogen found in eggs is Salmonella which causes typhoid. All egg shells should be treated at higher temperatures in order to destroy them.

Raw egg shells at temperature of 45°F or below should be rejected during delivery as a result of the possibility of the presence of  pathogens on them which exposes individuals to diseases.

Therefore, The maximum air temperature permitted for delivery vehicles when receiving shell eggs Shell eggs Receive at an air temperature of 45°F (7°C) or lower.

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Answer:

Uniform Speed: A body is said to be moving with uniform speed, if it covers equal distances in equal intervals of time. Variable Speed: A body is said to be moving with variable speed if it covers unequal distances in equal intervals of time.

Explanation:

I got it from google

Answer:

Speed is a measure of how fast an object is moving at a given instant of time. It is a scalar quantity. Its unit is m/s. For a body covering equal distances in equal time intervals, the speed is called uniform speed.

Explanation:

Answer:

The magnitude of the boy's displacement is 24.698 paces which is in the direction of approximately 58.24° North of East

Explanation:

The given parameters are;

The distance West the boy on a treasure hunt walks = 12 paces

The distance North the boy on a treasure hunt then walks = 21 paces

The distance East the boy on a treasure hunt then walks = 25 paces

Writing the displacement in vector format, gives;

d = -12·i + 21·j + 25·i

Which gives

d = 13·i + 21·j

The magnitude of the boy's resultant displacement is given as follows;

[tex]\left | \mathbf{d} \right | = \sqrt{d_x^2 + d_y^2}[/tex]

Where;

[tex]d_x = 13, \ d_y = 21[/tex]

[tex]\left | \mathbf{d} \right | = \sqrt{13^2 + 21^2} = \sqrt{610} \approx 24.698 \ paces[/tex]

The magnitude of the boy's displacement is 24.698 paces

The direction of the displacement is tan⁻¹(21/13) ≈ 58.24° North of East.

Answer:

C. increase the number of wraps of wire around the core.

E. Connect a second battery in the circuit.

Explanation:

got the question current on a p e x

increase the number of wraps of wire around the core and Connect a second battery in the circuit are the two actions would strengthen an electromagnet.

The  distribution electrical power  through wires in a perfect manner inside a building or a room with better load control is known as electrical wiring.

Different types of wiring such as Tee system or Joint box system where the connection of appliances is done with this wiring, which does not  consume too much cable size.

Loop-in system means the system is used in lamps and other appliances are parallelly connected so that each appliance is controlled individually.

Cleat Wiring consists of ordinary VIR or PVC insulated wires is compounded on walls and ceilings by means of porcelain cleats, wood, or plastic, temporary system and is not suitable for domestic usage. For example, used in an under-construction building.

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All waves have the same  wavelength.   wrong

Radio telescopes give us  information about the birthplace of a star.  I think wrong but I'm not sure.

If the wavelength of a wave  increases, its frequency  also increases.   wrong

Visible light is a kind of  electromagnetic wave.   right

All objects emit  electromagnetic waves. right

All waves have the same wavelength is an incorrect statement.

Radio telescopes give us information about the birthplace of a star is a correct statement.

If the wavelength of a wave increases, its frequency also increases is an incorrect statement.

Visible light is a kind of electromagnetic wave that is a correct statement

All objects emit electromagnetic wave is a correct statement

Electromagnetic waves are waves that are generated as a result of oscillation between an electric field and a magnetic field. In other words, EM waves are a combination of vibrating magnetic and electric fields and these two fields are orthogonal to each other. Electromagnetic waves propagate in a transverse direction therefore these waves are also known as transverse waves.

Therefore, it is incorrect to say that all waves have the same wavelength.

It is true to say that radio telescopes can tell us where a star was born.

It is untrue to say that as a wave's wavelength increases, so does its frequency.

It is true to say that visible light is a type of electromagnetic wave.

It is true to say that all objects emit electromagnetic waves.

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Answer:

A

Explanation:

The order of the planets in the solar system, starting nearest the sun and working outward is the following: Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune

Answer:

The answer is Mass

Explanation:

I took the tests and study kinda yeahhhhhh

AHHHHHHHHHHHHHHHHHh chicks butts

Answer:

Atomic mass is defined as the number of protons and neutrons in an atom

Answer:

Formula for mass: m=f/a

m=600/3

The mass is 200.

Explanation:

Hope this helps!

Answer:

Explanation:

Conversions involve the interpolation of a particular value in a unit to it's equivalent value in another another unit. For example, the "value" of 60 seconds is the same as the "value" of 1 minute. There are several of this conversions that apply in our daily life. Two examples are provided below

1) Using the time conversion mentioned earlier. In some countries like Nigeria, talk time on phone are bought as airtime (prepaid) and one is usually charged per second of this airtime. Phones generally use the best unit to determine the exact time one has spoken for on a call. Hence, one sees values such as 1:23:16 meaning the individual has spoken for 1 hour, 23 minutes and 16 seconds. If a call is charged at 11 kobo per second, how much (in naira) will an individual be charged for speaking for that long.

1 hour can be converted to seconds by multiplying it by 3600 = 3600 s

23 minutes can be converted to seconds by multiplying it by 60 = 1380 s

16 seconds is already in seconds and will be added to the initial conversions in seconds to have 3600 + 1380 + 16 = 4996 s

If an individual charge per second is 11k, then speaking for 4996 s will cost such an individual 4996 × 11 = 54,956 kobo

To convert the said amount to naira (which is another conversion).

1 naira has the same value as 100 kobo, thus 54,956 kobo will be equal to 54956÷100 = 549.56 naira

This means the individual will be charged 549.56 naira for speaking for 1 hour, 23 minutes and 16 seconds.

2) Conversion of height in meters to feet: Some application documents (like immigration/visa documents) require you provide your height in meters while some require you provide your height in feet. Thus, an individual of 1.8 meters, will have to convert his/her height to feet by multiplying by 3.281, meaning the individual can also claim to be 5'9 feet (1.8 × 3.281).

Answer:

11 times the weight of Philip.

Explanation:

From the question given above, the following data were obtained:

Weight of Melissa (i.e cow) = 0.65 tons

Weight of Philip (i.e rabbit) = 192 ounces

Next, we shall express the weight of Philip (i.e the rabbit) in tons. This can be obtained as follow:

1 ounce = 3.125×10¯⁵ ton

Therefore,

192 ounce = 192 ounce × 3.125×10¯⁵ ton / 1 ounce

192 ounce = 0.06 ton

Thus, the weight of Philip (i.e the rabbit) in ton is 0.06 ton.

Next, we shall determine the ratio of the weight of Melissa (i.e the cow) to the weight of Philip (i.e the rabbit). This can be obtained as follow:

Weight of Melissa (i.e cow) = 0.65 ton

Weight of Philip (i.e rabbit) = 0.06 ton

Melissa /Philip = 0.65/0.06

Melissa /Philip = 11

Melissa = 11 × Phillip

Thus, it will take 11 times the weight of Philip to weigh as much as Melissa.

Answer:

diagram: see image, x-component: 84.3 N, acceleration: 4.38 m/s^2

Explanation:

(see image for further explanation)

Answer:

When two distinct elements are chemically combined—i.e., chemical bonds form between their atoms—the result is called a chemical compound. Most elements on Earth bond with other elements to form chemical compounds, such as sodium (Na) and Chloride (Cl), which combine to form table salt (NaCl).

Explanation:

i think its mixture.

When two distinct elements are chemically combined—i.e., chemical bonds form between their atoms—the result is called a chemical compound.

Most elements on Earth bond with other elements to form chemical compounds, such as sodium (Na) and Chloride (Cl), which combine to form table salt (NaCl).

Any substance made up of similar molecules with atoms from two or more different chemical elements is referred to as a chemical compound.

Atoms from more than 100 different chemical elements, both in their pure forms and when mixed to form chemical compounds, make up all matter in the universe.

Therefore, When two distinct elements are chemically combined—i.e., chemical bonds form between their atoms—the result is called a chemical compound.

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