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
ohaa [14]
4 years ago
6

HELP PLEASE! I have some homework for my 9th grade physical science class and it's due Monday, I already completed 1/2 of it, if

you can answer one or more that'll be really helpful, ty! If a question does not make sense please let me know, each of the pages contain a small paragraph that may be needed to complete the question. (p.s. if u do answer a question, please identify the page it is on and what number it is, tysm)
page 1
3: The symbol for one of the elements is derived from its German name, wolfram. What is the English name for this element?

page 2
1. What limitation is placed on electrons in the Bohr model of the atom?

2. When the light from a gas is passed through a prism, why is there only a certain number of lines rather than a continuous spectrum?

3. How is the series of lines emitted by a gas similar to a fingerprint?

4. Explain how scientists can use the pattern of lines from an unknown gas to identify what elements are contained in the gas?

page 3
1. what is ONE important difference between the Greek theory of atoms and Dalton's atomic theory?

2. what is the significance of the invention of the STM?

3. explain how an STM creates an image of the atoms on the surface of a material
Physics
1 answer:
faltersainse [42]4 years ago
8 0

Page 1: #3

Wolfram is known as Tungsten in English (Tungsten's symbol is a W).

Page 2: #1

I think the limitation is that the electrons in the Bohr model are only in certain energy levels and that they orbit the nucleus.

It's been a while since I was in a physical science class so I'm not sure about the rest but I wish you luck! I hope this helps a little bit!

You might be interested in
Two everyday examples of a starting motion
Tasya [4]
Pushing, pulling is the answer
8 0
3 years ago
A man is walking away from a lamppost with a light source h = 6 m above the ground. the man is m = 2 m tall. how long is the man
Llana [10]

Answer;

= 4 m is the length of the man's shadow.

Explanation;

2/x=6/(8+x) cross multiply.

6x=2(8+x)

6x=16+2x

6x-2x=16

4x=16

x=2=16/4

x=4 m. is the length of the man's shadow.

3 0
3 years ago
Light of wavelength 476.1 nm falls on two slits spaced 0.29 mm apart. What is the required distance from the slits to the screen
stich3 [128]

Answer:

The distance is D  =  2.6 \ m

Explanation:

From the question we are told that

    The wavelength of the light is  \lambda  =  476.1 \ nm  =  476.1 *10^{-9} \ m

      The  distance between the slit is  d =  0.29 \  mm  =  0.29 *10^{-3} \ m

       The  between the first and second dark fringes is  y =  4.2 \ mm  =  4.2 *10^{-3} \ m

Generally  fringe width is mathematically represented as

       y  =  \frac{\lambda * D }{d}

Where D is the distance of the slit to the screen

   Hence

        D  =  \frac{y *  d}{\lambda }

substituting values

       D  =  \frac{ 4.2 *10^{-3} *   0.29 *10^{-3}}{ 476.1 *10^{-9} }

        D  =  2.6 \ m

7 0
4 years ago
What TWO things affect the gravitational force acting on an object?
ohaa [14]
The strength of the gravitational forces between two masses depends on

--  the product of the masses,

-- the distance between their centers of mass.
3 0
3 years ago
Read 2 more answers
A body builder exerts 15 N of force over 3 m. How much work did she do?
tangare [24]
Work done = force x distance

work done = 15 x 3

work done = 45J
4 0
3 years ago
Read 2 more answers
Other questions:
  • The primary service used by stations to exchange mac frames when the frame must traverse the ds to get from a station in one bss
    10·1 answer
  • Pls answer these questions I beg u!! And use the diagram for answering the questions pls help!! I will make u the BRAINLIEST!!!
    6·1 answer
  • At 9:13AM a car is traveling at 35 miles per hour. Two minutes later, the car istraveling at 85 miles per hour. Prove that are s
    15·1 answer
  • Which years had the least sunspot activity?
    13·1 answer
  • A large stick is pivoted about one end and allowed to swing back and forth with no friction as a physical pendulum. The mass of
    6·1 answer
  • Two metal sphere each of radius 2.0 cm, have a center-to-center separation of 3.30 m. Sphere 1 has a chrage of +1.10 10^-8 C. Sp
    8·1 answer
  • How does gravity change as it nears an object​
    6·1 answer
  • According to the rule of 72 and about how many years will $78 be worth $39 if the rate of inflation is 5.8%
    13·2 answers
  • А A van accelerates from Amst to zomst in 8s. How far does it<br>travel in<br>this time?​
    8·1 answer
  • Anybody wana play imvu or 2k
    13·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!