1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Readme [11.4K]
3 years ago
12

On a distant planet a freely falling object has an acceleration of 20m/s. what vertical distance will an object dropped from res

t on this planet cover in 1.8
Physics
1 answer:
AveGali [126]3 years ago
3 0
<span>Use s = ut + 1/2 at^2, so
       
s = 0 + 1/2 x20 x 1.8 x 1.8
       
s = 32.4 m.</span>
You might be interested in
How many protons are found in 1 c positive
Elena L [17]
Im kinda confused on this because it says there c positive

8 0
3 years ago
Which of the following lies in the ecliptic plane?
babymother [125]
<h2>Answer: Earth's orbital path around the Sun</h2><h2></h2>

The <u>Ecliptic</u> refers to the orbit of the Earth around the Sun. Therefore, <u>for an observer on Earth it will be the apparent path of the Sun in the sky during the year, with respect to the "immobile background" of the other stars.</u>

<u />

It should be noted that the ecliptic plane (which is the same orbital plane of the Earth in its translation movement) is tilted with respect to the equator of the planet about 23\° approximately. This is due to the inclination of the Earth's axis.

Hence, the correct option is Earth's orbital path around the Sun.

7 0
3 years ago
Which of the following statements is TRUE for high-visibility clothing? A. High-visibility clothing helps to reduce insect probl
Vlad1618 [11]

Answer:

The answer for the above statement is:

C. High-visibility clothing is important to wear in areas with moving vehicles.

because in bright clothes you are easier to see, so people driving can see you.

Explanation:

3 0
3 years ago
Read 2 more answers
A heat engine is a device that uses _____to produce useful work.
MakcuM [25]

A heat engine is a device that uses heat to produce useful work.

3 0
3 years ago
Read 2 more answers
Use the Bohr model to address this question. When a hydrogen atom makes a transition from the 5 th energy level to the 2nd, coun
iris [78.8K]

Answer:

A. 2.82 eV

B. 439nm

C. 59.5 angstroms

Explanation:

A. To calculate the energy of the photon emitted you use the following formula:

E_{n1,n2}=-13.4(\frac{1}{n_2^2}-\frac{1}{n_1^2})     (1)

n1: final state = 5

n2: initial state = 2

Where the energy is electron volts. You replace the values of n1 and n2 in the equation (1):

E_{5,2}=-13.6(\frac{1}{5^2}-\frac{1}{2^2})=2.82eV

B. The energy of the emitted photon is given by the following formula:

E=h\frac{c}{\lambda}   (2)

h: Planck's constant = 6.62*10^{-34} kgm^2/s

c: speed of light = 3*10^8 m/s

λ: wavelength of the photon

You first convert the energy from eV to J:

2.82eV*\frac{1J}{6.242*10^{18}eV}=4.517*10^{-19}J

Next, you use the equation (2) and solve for λ:

\lambda=\frac{hc}{E}=\frac{(6.62*10^{-34} kg m^2/s)(3*10^8m/s)}{4.517*10^{-19}J}=4.39*10^{-7}m=439*10^{-9}m=439nm

C. The radius of the orbit is given by:

r_n=n^2a_o   (3)

where ao is the Bohr's radius = 2.380 Angstroms

You use the equation (3) with n=5:

r_5=5^2(2.380)=59.5

hence, the radius of the atom in its 5-th state is 59.5 anstrongs

8 0
3 years ago
Other questions:
  • You are the driver of the car in the photos above. You Are traveling at 30 mph when suddenly the car goes from its position in t
    6·1 answer
  • An object is moving in the absence of a net force. Which of the following best describes the object’s motion? A. The object will
    15·1 answer
  • The relationship between electricity and magnetism is called what
    13·1 answer
  • Can someone in the fewest SIMPLE words possible, compare nuclear fusion and fission in terms of what happens in the reactions, t
    5·2 answers
  • How far (in meters) will you travel in 3 minutes running at a rate of 6 m/s?
    11·1 answer
  • How is the brightness of the star related to how quickly it pulses?​
    12·1 answer
  • A 17Kg sitting on a shelf has a potential energy of 350J. How high is the shelf? Round your number to the nearest whole number
    8·1 answer
  • What is the correct answer?
    5·2 answers
  • What is the meaning of length based on scientific measurements?
    7·2 answers
  • Part H)
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!