answer.
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
Mkey [24]
2 years ago
7

Which statement corresponds to emission spectra?

Physics
1 answer:
monitta2 years ago
7 0
B
i just took the test






You might be interested in
A vector A is added to B=6i-8j. The resultant vector is in the positive x direction and has a magnitude equal to A . What is the
snow_tiger [21]

The correct answer would be letter d, 8.3.

 

Solution for the problem follows:

 

Given are:

B = 6i - 8j 


A is unknown; let A be = mi + nj 



A+B is along the x axis (therefore A+B = Ki + 0j, where K is unknown,

 

but then again the magnitude of A+B is the similar as the magnitude of A,

 

so mag(A+B)=K=sqrt(m^2+n^2), or K^2 = m^2+n^2. 



A+B, from simple vector addition, will be now (m+6)i + (n-8)j.

 

Ever since we previously know A+B = Ki + 0j, we now know that: 

m+6 = K 


n-8 = 0, which implies n=8. 

Thus, K^2=m^2+n^2 ====> (m+6)^2 = m^2 +8^2 


= m^2 + 12m + 36 = m^2 + 64 


= 12m = 28 


= m = 2.33333... 

Therefore, the magnitude of A is sqrt[(2.333...)^2 + 8^2] = 8.3333

5 0
2 years ago
Read 2 more answers
A space shuttle orbits Earth at a speed of 21,000 km/hr. How far does it go in 3.5 hrs?
inn [45]
Since it travels at 21,000 kilometers per hour, you'd just multiply that with 3.5 to get 73,500. So your answer is 73,500.

5 0
2 years ago
Kevin is a black high school senior. While walking home from a sporting event at school, he sees a police car and decides to tak
RSB [31]

Answer:

Ethnomethodology theory

Explanation:

Take note of the fact that we are told Kevin worries that the police will stop and question him even though he has not done anything wrong.

This statement shows us that Kevin already understood his society from past experiences, and thus he tries to avoid social interactions with particular member of his society (the police) who may be show discrimination towards him.

4 0
2 years ago
Essam is abseiling down a steep cliff. How much gravitational potential energy does he lose for every metre he descends? His mas
Dafna11 [192]

Answer:

720 J

Explanation:

The gravitational potential energy that Essam loses for every metre is given by:

\Delta U=mg \Delta h

where

m=72 kg is Essam's mass

g=10 N/kg is the gravitational field strength

\Delta h=1 m is the difference in height

By substituting the numbers into the formula, we find

\Delta U=(72 kg)(10 N/kg)(1 m)=720 J

5 0
2 years ago
Read 2 more answers
A metal spoon becomes hot after being left in a pan of boiling water. this is an example of _____. conduction reflection radiati
IRISSAK [1]
Two methods of transfer of heat are involved in this process: conduction and convection.

In fact, the metal spoon is heated by conduction because the molecules of the boiling water collide with the molecules of the spoon, releasing heat to it; and also by convection, because in the pot of boiling water masses of hot water goes upward and they give their heat to the spoon, then these masses become cooler and they go down, replaced by other masses of hot water.
6 0
2 years ago
Read 2 more answers
Other questions:
  • A spherical balloon is 40 ft in diameter and surrounded by air at 60°F and 29.92 in Hg abs.(a) If the balloon is filled with hyd
    6·2 answers
  • what shall be the effect on the least count of spherometer if number of divisions on its circular scale be doubled?
    12·1 answer
  • How does the sun's energy help maintain Earth's energy budget? A part of it is trapped by carbon dioxide and methane. A part of
    7·2 answers
  • When a car drives along a "washboard" road, the regular bumps cause the wheels to oscillate on the springs. (What actually oscil
    10·1 answer
  • A ball is thrown upward from the top of a 25.0 m tall building. The ball’s initial speed is 12.0 m/sec. At the same instant, a p
    10·1 answer
  • Nerve impulses are carried along axons, the elongated fibers that transmit neural signals. We can model an axon as a tube with a
    5·1 answer
  • 10. How far does a transverse pulse travel in 1.23 ms on a string with a density of 5.47 × 10−3 kg/m under tension of 47.8 ?????
    7·1 answer
  • Which of the following has a particles in most irregular pattern​
    10·1 answer
  • Four kilograms of carbon monoxide (CO) is contained in a rigid tank with a volume of 1 m^3. The tank is fitted with a paddle whe
    11·1 answer
  • What is the mass of a student who weighs 618 Newton?
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!