Physics High School

Which is the correct answer

Answers

Answer 1

Answer: E

Explanation: I looked it up and it said E.

Related Questions

please answer this time question in do not send a link to an unknown website or you are getting reported.

Answers

(1) Use Newton's second law: The force F required to accelerate a mass m with acceleration a satisfies

F = m a

So the force needed to accelerate the lion-stretcher system is

F = (175 kg) (2 m/s²) = 350 N

(2) Average speed is defined as the ratio of distance traveled to the time it takes to travel that distance, so in this case the bus's average speed is

(280 km) / (4 h) = 70 km/h

(3) The vertical lines in the plot split up the distance function into 5-minute chunks. The one with the highest average speed is the one over which the distance changes the most. Roughly, the average speeds over each of the given choices is

• 0 to 5 min : (1500 m - 0 m) / (5 min) = 300 m/min

• 10 to 15 min : (3250 m - 2500 m) / (5 min) = 150 m/min

• 15 to 20 min : (3750 m - 3250 m) / (5 min) = 100 m/min

• 25 to 30 min : (4500 m - 4250 m) / (5 min) = 50 m/min

(4) Velocity is a vector, so it has both magnitude and direction. A car moving at constant velocity would be traveling at the same magnitude and direction. But a car on the circular track is constantly turning and changing direction.

Which feature causes a gap in the geologic record?

extrusion
fault
intrusion
erosion

Answers

Answer:

Explanation:

Answer : a. Extrusion

This important factor of survival for the coral reef is
a:symbiotic
b: abiotic
c: biotic
D:parasitic

Answers

Answer: biotic

Explanation:

Which statement explains how planets move in orbit as supported by Newton’s first law of motion?

Planets can change the direction of their own orbital path.
Planets can change orbits due to their inertia.
Planets in motion will have a constant speed unless acted on by an outside force.
Planets with a greater mass will orbit more quickly than smaller planets.

Answers

the answer is c i think

Answer:

C. Planets in motion will have a constant speed unless acted on by an outside force.

Explanation:

Took the test

100 cm cubic of water is mixed with 50 centimetres cubic of concentrated acid of density 1.2 gram per centimetre cube assuming no change in volume find the average density of the mixture the density of water is 1.0 gram per centimetre cube

Answers

Answer:

Average Density = 1.07 g/cm³

Explanation:

The average density of the whole mixture is given by the following formula:

[tex]Average\ Density = \frac{mass\ of\ whole\ mixture}{volume\ of\ whole\ mixture}[/tex]

where,

volume of whole mixture = volume of water + volume of acid

volume of whole mixture = 100 cm³ + 50 cm³ = 150cm³

mass of whole mixture = mass of water + mass of acid

mass of whole mixture = (volume of water)(density of water) + (volume of acid)(density of acid)

mass of whole mixture = (100 cm³)(1 g/cm³) + (50 cm³)(1.2 g/cm³)

mass of whole mixture = 160 g

Therefore,

[tex]Average\ Density = \frac{160\ g}{150\ cm^3}[/tex]

Average Density = 1.07 g/cm³

Increased global temperature may lead to more forest fires, longer droughts, and loss of habitat. How will this effect many species? *

Answers

Answer:

Many species will be affected by increased global temperatures due to following reasons as mentioned.

As snow at poles will continue to melt and habitat for many species will be lost. This is create imbalance in the food chain of oceans which are prime source of food for many species. Some species will thrive as their hunters will be eradicated due to loss of habitat and overall food chain balance will be disturbed. This will cause species to go extinct.

The cycle of rain will be disturbed causing an imbalance in water cycle which will cause droughts and species will suffer and die eventually will go extinct.

has anyone done this???i need the last questions for 1 and 2

Answers

Answer:

no i haven't done it

Explanation:

clean yo computer tho

A hydrogen atom and a carbon atom move at the same speed. Which has the greater kinetic energy?

Answers

Answer:

The carbon atom has greater kinetic energy than a hydrogen atom.

Hope this helps! :)

Carbon atom has the greater kinetic energy.

What is meant by kinetic energy ?

Kinetic energy is defined as the energy attained by a body by virtue of its motion.

Here,

The speed of the hydrogen atom and carbon atom are the same.

Kinetic energy of hydrogen atom, KEн = 1/2 m(н) v(н)²

Kinetic energy of carbon atom, KEс = 1/2 m(с) v(с)²

where m and v are mass and speed respectively.

Taking the ratio,

KEн/KEс = m(н)/m(с)

KEн/KEс = 2/12

KEн/KEс = 1/6

KEс = 6KEн

Therefore the kinetic energy of carbon atom is 6 times the kinetic energy of hydrogen atom.

Hence,

Carbon atom has the greater kinetic energy.

To learn more about kinetic energy, click:

https://brainly.com/question/72216

#SPJ2

A car starts from rest with an acceleration of 5.0 m / s² and travels a distance of 1.0 km. What is the speed value of this car?

Answers

Answer:

100 m/s

Explanation:

We'll begin by converting 1 km to m. This can be obtained as follow:

1 km = 1000 m

Finally, we shall determine the final velocity of the car. This can be obtained as follow:

Initial velocity (u) = 0 m/s

Acceleration (a) = 5.0 m/s²

Distance (s) = 1000 m

Final velocity (v) =?

v² = u² + 2as

v² = 0² + (2 × 5 × 1000)

v² = 0 + 10000

v² = 10000

Take the square root of both side

v = √10000

v = 100 m/s

Therefore, the speed value of the car is 100 m/s.

The mass of a body is 25 kg and the value of acceleration due to gravity is 9.8 m/s^2. Calculate the weight of body.

Answers

Explanation:

weight=mass ×acceleration

weight=25×9.8

=245

Answer:

2.33..

Explanation:

f = wavelength/speed

= 0.0000007/300000000

m is mass

c is specific heat capacity for steam

Q is heat, [Q]=J

a battery causes a current of 2.0 A to flow through a lamp. the power used by the lamp is 12 watts. what is the voltage (i asked this before and never got the answer, i need the answer soon)

Answers

Answer: 6V

Explanation:

19. Two waves traveling in opposite directions on a rope meet and undergo complete destructive interference.
Which of the following best
describes the waves a moment after the waves meet and coincide?
The waves no longer exist.
The waves continue unchanged.
The waves reflect and travel backward.
A single wave continues along the rope.
a.
b.
c.
d.

Answers

Answer:

Explanation:

do electronics harm our mental physical and social health

Answers

Answer:

(I will talk in my opinion only)

electronics do harm our mental health but they are also helpful ones like mobile both a boon and a curse

physical health is greatly affected and it's something no need to explain

social ( for me ) my only place to be social and talk people is brainly so for me mobile is very important

Answer:

Just a little bit. You should not be on electronics all the time. I know some people that are so addicted to there electronics that they won't even hang out with people. If you are at the point where you think about things other than school, friends, and family...you should think about getting off of your electronics and go play with a neighborhood friend outside, or have a sleepover! Your whole life should not count on your phone, iPad, or your laptop.

Explanation:

Hope this helps! No recorces included in this writing.

A double slit produces a diffraction pattern that is a combination of single and double slit interference. Find the ratio of the width of the slits to the separation between them, if the first minimum of the single slit pattern falls on the fifth maximum of the double slit pattern. (This will greatly reduce the intensity of the fifth maximum.)

Answers

Answer:

The ratio of the width of the slits to the separation between them is 1:5

Explanation:

For this set of question

n = 1, m = 5

As we know for nth minimum

[tex]D sin\theta =n \lambda[/tex]

For mth Maximum

[tex]d sin\theta =m \lambda[/tex]

From the above two equations we get

[tex]Sin\theta = \frac{1*\lambda}{D} \\d * \frac{1*\lambda}{D} = 5 *\lambda\\\frac{D}{d} = \frac{1}{5}[/tex]

The ratio of the width of the slits to the separation between them is 1:5

In the system shown above, the pulley is a uniform disk with a mass of .75 kg and a radius of 6.5 cm. The coefficient of friction between the 5.8 kg mass and the horizontal surface is .25, and the ropes does not slip on the pulley. They system is released from rest. Use work-energy principles to determine the kinetic energy of the (a) 2.8 kg mass and (b) the pulley after the 5.8 kg mass has moved 2.2 meters.

Answers

Answer:

i am answering the same question 3rd time

please find the answer in the images attached.

Of the following metals, which one is the BEST conductor of electricity?
Iron
Steel
Aluminum
Silver

Answers

Silver

Take a look at the chart attached for most conductive

I can someone help me and also I gtg so ill be back in a bit

Answers

Answer: No sure what to do

Explanation: points for points

Which shows transformation of energy in a working television?

A. mechanical energy to sound and light

B. electrical energy to light and sound

C. light to electrical energy to mechanical energy

D. electrical energy to light to sound to heat energy

Answers

Explanation:

the answer is b I think.......

Which force is always attractive and has a very small range? strong nuclear O weak nuclear O gravitational electromagnetic

Answers

Answer:

Strong nuclear

Explanation:

Took a quiz on this and got it right

Answer:

Strong nuclear

Explanation:

A paved blacktop parking lot was built on what was
once a soil-covered field. This area will now
experience increased runoff when rain occurs because
the paved parking lot has

A) less capillarity B) less permeability
C) greater infiltration D) greater porosity

Answers

Answer:

The answer is B. less permeability.

Explanation:

Other Questions

You have recently visited visited a place while a famous person was there. In your letter you should include the following Describe where you were and what happened Explain what the famous person is doing Say how u felt about the experience PLSS ANSWER THANKS Write an EQUATION that represents what is seen in the figure. dlaczego due znaczenie dla kultury w Polsce miay obiady czwartkowe Required: 1. Determine the carrying value of inventory at year-end, assuming the lower of cost or net realizable value (LCNRV) rule is applied to (a) individual products, (b) product categories, and (c) total inventory. 2. Assuming inventory write-downs are common for Almaden, record any necessary year-end adjustment amount for each of the LCNRV applications in requirement 1. Solve. -52 +63 +(-41) = 0 8 16. 5 3 Done Chapter 31. What happens in Winstons dreams?Chapter 4:1. What is Winstons job at the ministry?2. What are the dangers of changing our history? What do you think the quote It struck him ascurious that you could create dead men but not living ones? means? please help i really can't figure this out Help needed! Please needed ASAP! Answer this please, Ill reward brainalist + points, please help! PLEASE HELP!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! TRIG RATIOS!!!!!!!!!!!! If a cheetah runs 352 meters in 20 seconds, what is the speed of the cheetah? The bottom edge of a 16-foot long cantilever is given by the equation y = 2Vx, where y is the distance thebottom edge is from ground height, in feet.y(a) What is the value of b, the height of thecantilever, in feet?bTy=2&xb) To the nearest tenth of a foot, what is thethickness, T, of the cantilever at x =6 feet? How should the following statement be classified?Every year, more students go to prom than to the homecoming dance. - Aimi is making Valentine's Day cards for everyone in her class. She plans to use a whole sheet of paper for each of her 2 closest friends. She will use 1/2 of a sheet of paper for everyone else in the class. She has 13 sheets of paper. How many of the smaller cards can she make? Help! I will give me the brainiest! Three molecules of calcium metal and one molecule of nitrogen gas react to form one molecule of solid calcium nitride.Write the equation Read the excerpt from How Hurricanes Form.Hurricanes are often compared to engines. Just like engines, they need a type of fuel. Hurricanes form over warm ocean waters near the equator. For hurricanes, their fuel is warm, moist air. When hurricanes form, the warm, moist air above the ocean rises upward from close to the surface of the water. Because the warm air rises, it results in less air under the surface of the water. This area with less air is known as an area with low pressure.Air from areas surrounding this low pressure space pushes in to the area. This fills the low pressure area. The new air in this space becomes warm and moist and also rises. As the air continues to rise, the air surrounding the space swirls in to take its place. This process of air swirling in to replace air that has risen continues. Eventually, the moisture in the air forms clouds.The wind and the clouds that form create a system. A system is a pattern of weather. The system of clouds and winds continues to spin and grow. The water evaporating from the ocean's warm surface acts as the fuel, which is what helps this spinning and growing. The system rotates faster and faster until the eye of the storm forms in the center area. Ironically, the eye of the storm is the calmest part, and it has very low air pressure. The higher pressure above the hurricane continually flows down into the eye.Select the detail from the excerpt that supports the main idea of this part of the article. (2 points) aHurricanes are often compared to engines. bThe eye of the storm is the calmest part of the storm and has very low air pressure. cThe water evaporating from the ocean's warm surface acts as the fuel. dThis process of air swirling in to replace air that has risen continues. Bob can paint a fence in 12 hours, and working with Jen can paint a fence in 4 hours. How long would it have taken Jen to paint the fence alone? Hannah decides to test whether engineering majors have greater visualspatial abilities than students with other majors. Hannah decides to define visualspatial ability in terms of how long it takes each participant to complete a jigsaw puzzle. This is an example of a(n): A.Operational definition. B. Theoretical definition. C.Corollary. D.Hypothesis.