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
marta [7]
3 years ago
14

If you were doing a research study on sleep and student achievement, which

Physics
2 answers:
sasho [114]3 years ago
8 0
The answer to the question it’s D —> The amount of sleep a student gets affects student achievement
jasenka [17]3 years ago
6 0
Letter D: The amount of sleep a student gets affects student achievement
You might be interested in
Define constant speed
mash [69]
It is the speed at which a body moves without any interuptions (external forces etc)
7 0
3 years ago
Read 2 more answers
Families often require the services of _______ to best meet their family needs or the specific needs of their child. A. public l
KengaRu [80]

Answer: B. Community agencies

Explanation:

Family requires the services of community agencies for meeting their family and child needs. The community agencies provide with food items, dairy items, medicines, stationary stuff, clothes required as daily needs.

7 0
3 years ago
please write the definition of instantaneous speed, velocity and acceleration and solve problems on them please show workings​
Katyanochek1 [597]

Answer:

instantaneous speed: The instantaneous speed is the speed of an object at a particular moment in time. And if you include the direction with that speed, you get the instantaneous velocity. In other words, eight meters per second to the right was the instantaneously velocity of this person at that particular moment in time.

velocity: the speed of something in a given direction.

acceleration: a vehicle's capacity to gain speed within a short time.

solve problems: Problem solving consists of using generic or ad hoc methods in an orderly manner to find solutions to problems.

Explanation:

7 0
3 years ago
A box of mass 12 kg is at rest on a flat floor. The coefficient of static friction between the box and floor is 0.42. What is th
vladimir2022 [97]

As we know that friction force on box is given by

F_s = \mu_s N

here we know that

N = mg

here we have

m = 12 kg

\mu_s = 0.42

so now we have

N = 12(9.8) = 117.6 N

now we will have

F_s = 0.42(12)(9.8)

F_s = 49.4 N

so it required minimum 49 N(approx) force to move the block

5 0
4 years ago
Read 2 more answers
Coulomb's law for the magnitude of the force FFF between two particles with charges QQQ and Q′Q′Q^\prime separated by a distance
SSSSS [86.1K]

Answer:

{F_{tot} = -1.092*10^{-2}N

Explanation:

The question: What is the net force exerted by these two charges on a third charge q_3 = 47.0 nC placed between q_1 and q_2 at x_3 = -1.240 mm ?

<u>Your answer may be positive or negative, depending on the direction of the force.</u>

Solution:

The coulomb force is given by the equation

F =k\dfrac{q_1 q_2}{d^2}.

where d is the separation between the charges q_1 and q_2.

Now, in our case

q_1=-13.5nC=-13.5*10^{-9}C

q_2=-1.735nC=-1.735*10^{-9}C

q_3= 47*10^{-9}C

The separation between charges q_3 and q_1 is

d_{31}= (-1.240mm)-(-1.735mm)=0.495mm=4.95*10^{-4} m

Therefore, the force between them is

F_{31} = (9*10^9NmC^{-2})\dfrac{47*10^{-9}*(-13.5*10^{-9})}{4.95*10^{-4}} =-0.01152N

and it is directed in the negative x-direction.

The separation between charges q_2  and q_3 is

d_{23} =-1.240mm-0=-1.240*10^{-3}m

therefore, the force between them is

F_{23} =(9*10^9Nm^2C^{-2})\dfrac{47*10^{-9}C*(-1.735*10^{-9}C)}{-1.240*10^{-3}m}=5.94*10^{-4}N

Therefore the total force on charge q_3 is

F_{tot} =5.94*10^{-4}-0.01152N = -0.010926N\\\\\boxed{F_{tot} = -1.092*10^{-2}N}

8 0
3 years ago
Other questions:
  • Resocialization, or adopting new norms and patterns of behavior, happens frequently in which of these situations?
    10·1 answer
  • What is the condition for distance travelled by a body is equal to displacement ​
    8·1 answer
  • A string with both ends held fixed is vibrating in its third harmonic. The waves have a speed of 193 m/s and a frequency of 235
    6·1 answer
  • Suppose you look at a spectrum of visible light by looking through a prism or diffraction grating. How can you decide whether it
    15·1 answer
  • What is the coefficent for hydrochloric acid
    8·1 answer
  • the diagram below represents a 4.0-newton force applied to a 0.200-kilogram copper block sliding to the right on a horizontal st
    10·1 answer
  • PLEASE HELP ME!! <br><br> If the refractive index of water is 1.33, then its critical angle is...
    14·1 answer
  • Un cuerpo se encuentra en reposo sobre una mesa horizontal. Entonces se puede afirmar que:
    11·1 answer
  • If our planet was twice as far away how would the Earth’s orbit change?
    9·1 answer
  • A student on a tower 49 m height drops a stone. One second later he throws a second stone after the first. They both hit the gro
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!