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
julsineya [31]
3 years ago
9

The only type of investigation that involves a control group is

Physics
2 answers:
OleMash [197]3 years ago
4 0
<span>experimental? I hope that helps :)</span>
frez [133]3 years ago
3 0
An experimental one. Hope this helped.
You might be interested in
A topographic map would best provide information about which area? O state boundaries O interstate highways O routes of minor ro
VladimirAG [237]

Answer:

I believe it is D

Explanation:

7 0
3 years ago
Read 2 more answers
What is meant by inertia???
kipiarov [429]
Continuing in an existing state. Resistance to change.
7 0
3 years ago
Read 2 more answers
An electric heating element has a resistance of 16 Ω and is connected to a voltage of 120 V. How much current will flow in this
sergeinik [125]

This is weird.

All three 'choices' are true.

Line um up. (a) shows how to solve the problem. (b) does it. and (c) is the answer.

7 0
3 years ago
Alex is standing still and throws a football with a speed of 10 m/s to his friend, who is also standing still. The two friends a
Phantasy [73]

The question is incomplete. It comes with a set of answer choices.


These are the answer choices:


Alex observes it as 10 m/s, and his friend observes it as less than 10 m/s.


Alex observes it as less than 10 m/s, and his friend observes it as 10 m/s.


Both Alex and his friend observe it as 10 m/s.


Both Alex and his friend observe it as less than 10 m/s.



Answer: Both Alex and his friend observe it as 10 m/s.


Justification:


1) The speed is relative to the frame of reference.


2) It is said that the both Alex and his friend are standing still.


3) Then, the speed they both see is the same, 10 m/s, respect the Earth (where they are standing still).


Of course, Alex is watching the ball moving away and his friend is seing it approaching, but it is not relevant for the question, as it deals with the speed which is only about magnitude, not direction.

7 0
3 years ago
Read 2 more answers
Can someone define 'work' for me please? I looked it up but there are a lot of different answers.
vekshin1

Answer:

Work- Activity involving mental or physical effort done in order to achieve a purpose or result.

Explanation:

This was the first definition from the dictionary on google :)

7 0
3 years ago
Read 2 more answers
Other questions:
  • . (a) A world record was set for the men's 100-m dash in the 2008 Olympic Games in Beijing by Usain Bolt of Jamaica. Bolt "coast
    15·1 answer
  • PLEASE HELP! Brainliest will be given!!!
    11·1 answer
  • When Dr. Hewitt immerses an object in water the second time and catches the water that is displaced by the object, how does the
    12·1 answer
  • a bungee jumper of mass 50 kg jumps from a bridge using a 10 m long cord which can be approximated as a spring with spring const
    15·1 answer
  • a plane travels a total distance of 1,223. If the the plane travels 460 mph for 75 minutes. Then, how long in minutes does it tr
    10·1 answer
  • The bubbles in a carbonated soft drink are produced when carbonic acid decomposes to form carbon dioxide and water. In a closed
    5·1 answer
  • A 7.0kg skydiver is descending with a constant velocity
    14·1 answer
  • Can there be two places on the surface of the Earth having the same local time but opposite seasons? A. No, there cannot be two
    15·1 answer
  • Imagine that you are sitting on a couch watching TV and that you will continue sitting on the couch watching TV until someone ch
    8·1 answer
  • To understand the photoelectric effect physiciests should view light as having what type of properties?
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!