Physics High School

Match the phrase with its explanation

Match The Phrase With Its Explanation

Answers

Answer 1

Answer:

its very easy

Explanation:

Related Questions

a current of 3 amps flows through a lamp which is connected to a 24 volt battery calculate the lamps resistance​

Answers

Answer:

8

Explanation:

V = voltage

I = current

R = resistance

V = IR is the equation to find out the Voltage of an item so if we move around the equation so we are trying to resistance it would become R = V/I. So....

V = IR

R = V/I

R = 24/3

R = 8

Car accelerates uniformly from 22.5 m/s to 46.1 m/s in 2.47
seconds. Determine the acceleration of a car.

Answers

a=Vf-Vi/t
a= 46.1-22.5/2.47
a=23.6/2.47
a=9.55m/s2

What is one benefit of a cardio kickboxing workout?
A. It is a total body exercise.
B. It focuses specifically on aerobics.
C. It focuses specifically on anaerobics.
D. It focuses on the core muscles.

Answers

Answer:

D. It focuses on the core muscles

Answer:

A. It is a total body exercise

Explanation:

In cardio kickboxing as described by my school is "

a total body exercise that combines aerobic and anaerobic workoutsan improvement in body fat compositionan efficient use of workout timea boost in confidence and self-esteemrelief of stress and increased energy levelsvaluable self-defense skills

The first benefit is the one which we are focusing on because all the other answers are correct but A. Total body exercise is the best answer because it covers all of them as an compendious answer

Also I took the test and got this correct

Please solve this worksheet for me It’s very important please don’t write unnecessary things or else I’ll report please help me i request

Answers

Answer:

1. 231.25 mL

2. 218.75 kPa

3. 6.21 L

4. 427.5 mL

5. 83.01 mL

6. 307.6 mL

7. 1.15 L

8. 440.4 mL

Explanation:

This questions describes Boyle's law. Using Boyle's law equation to solve the questions as follows:

P1V1 = P2V2

Where;

P1 = initial pressure

P2 = final pressure

V1 = initial volume

V2 = final volume

Please find the answers to each question as an attachment.

An 80 kg runner has 3,000 J of kinetic energy. What is her velocity in m/s?

Answers

Answer: 8.6m/s

Explanation:From KE=1/2mv^2

In order to make v the subject of the formula we divide both sides by 1/2m. Thus V^2 will be left alone on the RHS. But we are looking for v and not v^2. Thus we find the square root of KE1/2m

Meaning V= sqrt[3000÷1/2 of 80]

=sqrt[3000÷40]

=sqrt(75)

=8.6m/s

Which of the following actions will decrease the gravitational force between two objects?

Increasing the mass of the objects
Increasing the density of the objects
Increasing the distance between the objects
Increasing the temperature of the objects

Answers

Increasing the distance between the objects

here's the Answer :

=》Increasing the distance between the objects.

since, gravitational force is inversely proportional to the distance between the objects, so if the distance increases the force will decrease.

[tex]gravitational \: force \: \: \dfrac{1}{ \alpha } \: \: distance[/tex]

Please help choose one
A B C or D
???

Answers

I believe the answer is B

This is because in combustion reactions the products are being burned meaning heat increases. Therefore energy is transferred from the fuel to the surroundings.
^^Correct!!!!!!!!!!!!

Volleyball took some of its characteristics from handball and tennis

True
False

Answers

Answer:

True Because if we observe carefully we will see that some moves of volleyball are similar to handball and tennis

In which of the following situations is there acceleration? (There may be more than one correct answer)

a. A car is sitting at a stoplight. The light turns green and the car begins moving.

b. A car maintains a speed of 10 mi/hr as it turns a corner.

c. When a truck approaches a stop light, it begins to slow down.

d. A car travels at 65 mi/hr.

Answers

A is the correct answer because “The light turns green and the car begins moving.”

Which ray diagram shows reflection

Answers

Answer:B

Explanation:

Answer:

The answer is B.

Explanation:

edge2020

The national government would like to start a program that would give states money for flood relief. Which of the following states could most likely benefit from a program like this?

Answers

Answer:

When a disaster is declared, the Federal government, led by the Federal Emergency Management Agency (FEMA), responds at the request of, and in support of, States, Tribes, Territories, and Insular Areas and local jurisdictions impacted by a disaster.

Explanation:

Please solve this worksheet for me It’s very important please don’t write unnecessary things or else I’ll report please help me i request

Answers

Answer:

1. 231.25 mL

2. 218.75 kPa

3. 6.21 L

4. 427.5 mL

5. 83.01 mL

6. 307.6 mL

7. 1.15 L

Explanation:

Boyle's law equation is used in this questions as follows;

P1V1 = P2V2

Where;

P1 = initial pressure

P2 = final pressure

V1 = initial volume

V2 = final volume

Please find the solutions to each subquestion as an attachment


You kick a ball. You are doing work on the ball when...

Answers

Your are giving force to the ball

Which of the following statements is true with
regards to Blackbody radiation?
a)
b)
c)
A blackbody emits more energy at longer
wavelengths as it heats up
A blackbody emits energy at all wavelengths
The shape of the blackbody spectrum
depends on what the source is made of
All of the above
None of the above
00)
e)​

Answers

I believe that it most likely would be C,

Covalent compounds......

Answers

Covalent compounds are characterized by bonding that involves sharing electrons.

Covalent compounds have the ability to share electrons as they mostly have 4 valence electrons.

What are covalent compounds?

Covalent compounds are defined as type of compounds which are formed by the mutual sharing of electrons to form electron pairs between the two atoms.These electron pairs are called as bonding pairs or shared pair of electrons.

Due to the sharing of valence electrons , the atoms are able to achieve a stable electronic configuration . Covalent compounds have  bonding  which involves many types of interactions like σ bonding,π bonding ,metal-to-metal bonding ,etc.

Sigma bonds are the strongest covalent bonds while the pi bonds are weaker covalent bonds .Covalent bonds are affected by electronegativities of the atoms present in the molecules.Compounds having covalent bonds have lower melting points as compared to those with ionic bonds.

Learn more about covalent compounds,here:

https://brainly.com/question/21505413

#SPJ2

The mass of an object is 84 kg. Find its weight on the Earth and the Moon.​

Answers

Answer:

We would take the mass given, 80 kg, and multiply it times the acceleration of Earth's downward pull on that mass, 9.8 m/s/s. So the weight on Earth is 784 newtons. So the weight of the same 80 kg mass on the moon is 133.28 N.

hi

mass is express  in Newtons.

On Earth gravity is  9.807   so  wieght would be :   9.807 * 84= 823.79

On the Moon garvity is  1.62  so weight would be  :  84 *1.62 = 136.08

6. A plane took 3.55 hours to complete its flight. If the distance of the flight was 2840 kilometers, at what average speed did the plane travel? Include the correct unit for full credit.

Answers

Answer:

The average speed is 10,082

Explanation:

Do the formula

Distance * time = speed

2840 * 3.55

= 10,082

Would the following reaction be endothermic or exothermic? Why?
CH4 + 02 --> CO2 + H2O + Energy
A. Exothermic because energy is a reactant
B. Endothermic because energy is a reactant
C. Endothermic because energy is a product
D. Exothermic because energy is a product

Answers

Answer:

Exothermic because energy is a product

Explanation:

Since energy is a product, heat was released, meaning that the reaction is exothermic.

Some people say you can get HIV from insect bites. True or false? Why?

Answers

The answer is False because HIV spreads through contact between HIV-infected blood or blood-contaminated body fluids and broken skin, wounds, or mucous membranes. Deep, open-mouth kissing if both partners have sores or bleeding gums and blood from the HIV-positive partner enters the HIV-negative partner's bloodstream.

Water heating over a stove

Answers

ahh yes

   Y.   E.    S.     W A.   T.  E.  R.  A.  N. D.  S T.  ON.  V.  E

Do you think using a homework machine could be considered cheating? Why or why not?

Answers

Yes, since the machine will do the work for you, you will get no more knowledge about how the problem was solved. It is basically giving you answers.

Pls help! Will mark brainliest!!

Answers

Answer:

I would say all of the above

Explanation:

I think this bcuz it says it should be useful and comfortable and so four is correct bcuz they need to know if it feels good and also if it possibly would give a rash or worse. Next, all the other ones would prove how well the suits work in the conditions need for use.

Hope this helps.

All of the above, because not only does the suit need to be fire safe but it also has to be comfortable for the fireman to perform their very best. They would have to consider how each material might carry and hold smoke and withstand fires so that the materials not only block the fireman from getting burnt, but also prevent them from getting too overheated because you don’t want to make the suits too thick to the point that the fire mixed with the suit will make them too exhausted or heavy. When there’s an immediate emergency, you need to consider which materials might be lighter because it’s hard to move quick with heavy uniforms

2. When braking and turning, you use ___?
a. All four wheels of traction
b. Only the outside edge of your tires
c. Split traction
d. Additional traction

Answers

Answer:

split traction

Explanation:

The energy transferred to the water in 100 seconds was 155 000 J. specific heat capacity of water = 4200 J/kg °C
Determine the mass of water in the kettle.
Use Figure 10.
Give your answer to 2 significant figures.
Any help would be appreciated

Answers

Answer:

0.37 kg

Explanation:

I'm not a professor myself, but this is how I worked it out:

using the graph, after 100 seconds, the temperature is 100 degrees Celsius.

If we now substitute everything into the specific heat capacity equation, making the mass "m", we would come up with:

4200 = 155000/(m x 100)

If we rearrange and solve for m, we get 0.37 kg.

I'm not sure if I have done this correctly, feel free to correct me.

Hope this helps!

By using the specific heat capacity formula, the  mass of water in the kettle is 0.47 kg

Give that the energy transferred to the water in 100 seconds was 155 000 J and the specific heat capacity of water = 4200 J/kg °C

From the graph;

The initial temperature of the water at time zero is 22 degree Celsius

The final temperature of the water at time 100s is 100 degree Celsius

Change in temperature (T) = 100 - 22 = 78 degree Celsius

To determine the mass of water in the kettle, use the heat energy formula below

E = mcT

Substitute all the parameters into the equation

155000 = 4200 x 78 M

Make M the subject of the formula

M = 155000/327600

M = 0.47 kg

Therefore, the  mass of water in the kettle is 0.47 kg

Learn more here: https://brainly.com/question/15475909

Electrical potential is measured in units called what

Answers

Answer:

Electrical potential is measured in units called volts.

Greg can't remember how tall his 9-month-old niece is. He guesses that she is 100 cm tall. Which of the following is true?

Age (months)

Height (cm)

3 61.1
6 67.8
9 72.3
12 76.1



A.
Based on the data, Greg's guess is reasonable.

B.
Based on the data, Greg's guess is not reasonable.

C.
Based on the data, Greg's niece should be around 61.1 cm tall.

D.
Based on the data, Greg's niece should be around 76.1 cm tall.

Answers

Answer:

C

Explanation:

list of places in our bodies where HIV is present

Answers

Answer: The brain

Explanation:

The brain is an ideal reservoir for our bodies. That is the main one.

Which law best describes contact force

A.
second law
B.
third law
C.
law of gravity
D.
first law

Answers

Answer:

b is the answer the third law

Explanation:

B because Newton's second law, which states that the force F acting on a body is equal to the mass m of the body multiplied by the acceleration a of its centre of mass, F = ma, is the basic equation of motion in classical mechanics.

How did Shi Huangdi link the new lands of his empire

Answers

Answer:

Many things, such as building the Great Wall of China, and building highways.

Explanation:

1.) Cameron loads a wheelbarrow full of dirt. She then holds up both handles and begins to push it across her yard. The push Cameron uses to move the wheelbarrow is an example of
trajectory

motion

dynamics

force

2.) Jeremy is pushing his two children on a set of swings. He gives his daughter a push and she swings about three feet high. Jeremy gives his son the same push, but he only swings about two feet high. What could account for the difference in how high the kids got?

Jeremy's daughter has more mass, so it takes less force to get her into the air.
Jeremy's son has more mass, so it would take more force to reach the same height as his daughter.
Jeremy's son has less mass, so it would take more force to reach the same height as his daughter.
Jeremy's daughter has more mass, so she accelerates faster than his son.

Answers

Answer:

C (Force)

Explanation:

Cmon we should all know dis

Answer:

force and Jeremy's son has more mass

Explanation:

pushing requires force and the son moves less

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