PLEASE HELP FILL IN TWO OPTIONS I WILL MARK BRAINLIEST IF RIGHT!

Answer:

Weight, W = 125 N

Explanation:

Pressure, P = 5 Pa

Area, A = 25 m²

We need to find how much must a man weigh (force) if the pressure he exerts while standing on one foot which has an area of 25 m² exerts a pressure of 5 Pa. So,

Pressure = force/area

So,

[tex]F=P\times A\\\\F=5\times 25\\F=125\ N[/tex]

So, the weight of the man is 125 N.

Answer:

the final velocity of the bus is -20 m/s.

Explanation:

Given;

initial velocity of the bus, u = 20 m/s

deceleration of the bus, -a = 8 m/s²

time of motion, t = 5 s

The final velocity of the bus is calculated as;

v = u + at

v = 20 + (-8 x 5)

v = 20 - 40

v = -20 m/s.

Therefore, the final velocity of the bus is -20 m/s.

Answer:

Examples. Weight, height, and length of organisms are examples of continuous variation while the color of petals, blood groups of animals, the gender of animals, etc. are examples of discontinuous variation.

Explanation:

Hope it helps

Answer:

Yes, it is correct : )

Explanation:

Hope this helps!

Answer:

yes, this is correct.

Explanation:

Answer:

From least to greatest: Neon, Sodium, Silicon, Iron, Uranium

Explanation:

Here are all the atomic numbers for each one:

Iron = 26

Sodium = 11

Uranium = 92

Neon = 10

Silicon = 14

Hope this helps! :D

Answer:

last one

Explanation:

Answer:

Oxygen is an element that can be a solid, liquid or gas depending on its temperature and pressure. In the atmosphere it is found as a gas, more specifically, a diatomic gas. This means that two oxygen atoms are connected together in a covalent double bond.

Answer:

It means that the frequency will be a lot higher with a shorter wave.

Answer: A

Explanation:

Just speed I think.

Speed is scalar, while velocity is a vector so you would need a direction. For acceleration you would need to know the specific speed at different points in time.

A cheetah can run 140 miles in 2 hours.

The information we can calculate about the cheetah given this information is the "speed" (A).

Answer:

the Corona is about 10 million times less dense than sun's surface.this low density makesuch less bright than surface of the sun

Answer:

dude the ans no corona,

Explanation:

It cannot survive in space let alone be one of the layer of the sun due to its high temperature ( that is 2million fahrenheit )

The atomic mass is the protons + the neutrons.

So your answer would be 5 + 6 = 11.

Please mark Brainliest! :)

Answer: 4. Windy, whooping weather

Explanation: b/c it is!

Answer:

Windy, whooping weather

Explanation:

thats the answer

Answer:to protect an electrical circuit from damage caused by excess current from an overload or short circuit.

Explanation:

Answer:

Difference = 1.83 hours

Explanation:

Let the two trips be A and B respectively.

Given the following data;

Distance A = 2000 miles

Speed A = 400 miles

Distance B = 2000 miles

Speed B = 480 miles per hour

To find the time spent;

a. For trip A.

Time A = distance A/speed A

Time A = 2000/400

Time A = 5 hours

b. For trip B.

Time B = distance B/speed B

Time B = 2000/480

Time B = 4.17 hours

Next, we would find the difference between the two trips.

Difference = Time A - Time B

Difference = 5 - 4.17

Difference = 1.83 hours

Therefore, the return trip was much quicker by 1.83 hours.

The return trip of the airplane will be quicker by 1.84 hours

It is given that

Distance covered by the plane D= 2000 miles

The average speed of the plane

 [tex]V_1=400\ \frac{Miles }{hour }[/tex]

The Return Average speed of the plane

[tex]V_2= 480\ \frac{Miles}{hour}[/tex]

Now we will first find the time taken by the airplane during the first visit.

[tex]V_1=\dfrac{Distance }{Time }[/tex]

[tex]Time = \dfrac{Distance }{V_1}[/tex]

Now by putting the values in the formula

[tex]T_1=\dfrac{2000}{400} =5\ hours[/tex]

Now for the return trip time taken by the plane

[tex]T_2=\dfrac{Distance }{V_2}[/tex]

[tex]T_2= \dfrac{2000}{480}[/tex]

[tex]T_2= 4.16\ hours[/tex]

Now the difference between the time will be

[tex]=T_1-T_2=5-4.16=0.86=1.84 \ Hours[/tex]

Thus the return trip of the airplane will be quicker by 1.84 hours

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If the distance between the two particles is increased to 8.44 mm, the electrical potential energy will increase because work must be done to separate two particles that attract one another. Hence option(A) is correct.

Potential energy is the energy held by an object as a result of its position relative to other objects, internal stresses, electric charge, or other factors.

The gravitational potential energy of an object, the elastic potential energy of an extended spring, and the electric potential energy of an electric charge in an electric field are all examples of common types of potential energy. The joule, denoted by the symbol J, is the unit of energy in the International System of Units (SI).

The positive and negative charges attract each other, so work must be done to separate two particles. Hence, the electrical potential energy will increase.

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Answer:

No external contact force.

Explanation:

Mass is defined as the amount of material an object contains, that doesn't change whether the object it on earth, on the moon or anywhere in space. Except the only force that is acting upon the body in gravity and they don't feel gravitational attraction towards the earth.

Answer: I = 9.0 A

Explanation: Ohm's Law is defined as the relationship between voltage and current: in a circuit, the voltage accross a conductor is directly proportional to the current.

The constant of proportionality is Resistance, whose unit is ohm (Ω).

so, Ohm's Law is

V = R.I

It is asked for the current, so, rearraging:

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

When added two more batteries, the voltage of the circuit triples:

[tex]V_{final}=3V_{initial}[/tex]

Since they are directly proportional, if voltage triples, so does current:

[tex]I_{final}=3I_{initial}[/tex]

[tex]I_{final}=3(3.0)[/tex]

[tex]I_{final}=[/tex] 9.0

The new current, when driven by 3 batteries is 9.0 A.

Answer:

310 miles

Explanation:

If an airplane can travel 620 miles in one hour, then to find how far it traveled in half of an hour, divide 620 by 2 (or multiply by 1/2).

620/2= 310 miles in 1/2 of an hour

Answer:

No

Explanation:

Acceleration is the rate of change in velocity. Here the car maintains a constant speed, no change in velocity

The treatment most likely to use is Superficial External bean Radiation Therapy. Then the correct option is B.

The electromagnetic spectrum consists of the range of all types of EM radiation. Radiation is a packet of energy that travels and spreads out.

It has radio waves, infrared waves, visible light waves, ultraviolet rays, and microwaves.

They possess high energy even to penetrate deep within the material. the electromagnetic spectrum has a longer wavelength and less frequency.

Haley noticed a small spot on her skin that turned out to be skin cancer.

Surgery, radiation, chemotherapy, and hormone therapy can all be used to relieve signs and symptoms.

Medications may relieve symptoms such as pain and shortness of breath. Palliative treatment can be used.

The treatment most likely to use is Superficial External bean Radiation Therapy.

Then the correct option is B.

Learn more about the electromagnetic spectrum.

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Answer:

False

Explanation:

The ground or surface cannot give off energy

(correct me if i am worng) :)

Answer:

f=1/t is the equation of frqency

Answer:

Decrease

Explanation:

Answer:

4.08m

Explanation:

h = PE/mg

h = 600/(15)(9.8)

h = 600/147

h = 4.08m

The work per unit charge required to move a charge between two points in an electric circuit electric potential difference. The right option is D) potential difference

Potential difference can be defined as the work done in moving a unit charge from one point to another in an electric field. The S.I unit of potential difference is volts (V).

From the question,

Hence, from the above, the right option is D) Potential difference

Learn more about potential difference here: https://brainly.com/question/24220726

Answer:

Force = Mass x Acceleration. Since the acceleration of gravity is always constant at 9.81 m/s2, the force of gravity is constant as well, according to Newton. If the object is sitting motionless on the ground, then the net force (sum of all forces) acting on it is zero

Explanation:

sorry if it doesn't help

Answer:

A-500 N

Explanation:

The computation of the tension in the chain is shown below

As we know that

F = ma

where

F denotes force

m denotes mass = 7

And, a denotes acceleration

Now for the acceleration we have to do the following calculations

The speed (v) of the hammer is

v = Angular speed × radius

where,

Angular seed = 2 × π ÷ Time Period

So, v = 2 × π × r ÷ P

v = 2 × 3.14 × 1.8 ÷ 1

= 11.304 m/s

Now

a = v^2 ÷ r

= 70.98912 m/s^2

Now the tension is  

T = F = m × a

= 7 × 70.98912

= 496.92384 N

= 500 N

Answer: 2934.75 Joules

Explanation:

Potential energy can be defined as energy possessed by an object or body due to its position.

Mathematically, potential energy is given by the formula;

P.E = mgh

Where P.E represents potential energy measured in Joules.

m represents the mass of an object.

g represents acceleration due to gravity measured in meters per second square.

h represents the height measured in meters.

Given the following data;

Weight =645

Height = 4.55

P.E = mgh

But we know that weight = mg = 645N

Substituting into the equation, we have;

P.E = 645 • 4.55

P.E = 2934.75J

Potential energy, P.E = 2934.75 Joules.