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
snow_tiger [21]
2 years ago
15

Question 7 (2 points)

Physics
1 answer:
DiKsa [7]2 years ago
6 0
This has to do with independent and dependent variables. The independent variable is what affects the dependant variable, so the question is, does a students mark on a test affect their hours of sleep or does their hours of sleep affect their test results? Which one makes more sense? I would say the latter.
You might be interested in
What is the speed of the roller coaster at the top of the loop if the radius of curvature there is 11.0 m and the downward accel
8090 [49]
<span>When an object moves in a circle, the acceleration points toward the center of the circle. This acceleration is called centripetal acceleration. We can use a simple equation to find centripetal acceleration. a = v^2 / r We can use this same equation to find the speed of the car. v^2 = a * r v = sqrt { a * r } v = sqrt{ (1.50)(9.80 m/s^2)(11.0 m) } v = 12.7 m/s The speed of the roller coaster is 12.7 m/s</span>
3 0
3 years ago
In the first law of Thermodynamics ΔE = Q - W, what does ΔE stand for???
Alexxx [7]
<span>Δ</span>E = q + w

q = heat (quantity of)

q and w can be positive or negative depending on if work/heat is being absorbed/done on the system or released/done by the system
7 0
3 years ago
Read 2 more answers
What properties of a sound wave determine volume, pitch, and timbre?
fiasKO [112]
Sound waves are changes in pressure generated by vibrating molecules. The physical characteristics of sound waves influence the three psychological features of sound: loudness, pitch, and timbre. Loudness depends on the amplitude,or height, of sound waves. The greater the amplitude, the louder the sound perceived.
8 0
3 years ago
Read 2 more answers
Which statement describes a good physical property of copper
frez [133]
It is number 3 because I know it is
4 0
3 years ago
Read 2 more answers
The table below shows a sample wavelength of each type of electromagnetic radiation, along with its frequency and energy.
trasher [3.6K]

Answer:

D lower energy waves is most likely the safest if one is exposed to.

5 0
3 years ago
Other questions:
  • Which scientist discovered the two radioactive elements radium and polonium?
    5·1 answer
  • How does temperature change affect surface tension
    10·1 answer
  • After setting up stereo speakers in your schools music room, you notice that in certain areas of the room, the sound from the sp
    5·1 answer
  • Traveling into space from Earth, which of these would he be able to reach first?
    9·2 answers
  • A mass M is attached to an ideal massless spring. When this system is set in motion with amplitude A, it has a period T. What is
    5·1 answer
  • The maximum mass of a white dwarf is ______ times the mass of the sun.
    11·1 answer
  • A 210-kg woorden raft floats on a lake. When a 75-kg man stands on the raft, it sinks 5.0 cm deeper into the water. When he step
    5·1 answer
  • It is claimed that if a lead bullet goes fast enough, it can melt completely when it comes to a halt suddenly, and all its kinet
    7·1 answer
  • A golf ball starts with an initial velocity of 100m/s and slows at a constant rate of -8m/s2, what is its final velocity after 2
    6·1 answer
  • Engineers design a system for heating the air in a house. They want the
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!