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
ahrayia [7]
3 years ago
13

Alan and Monica tested how fertilizer X affected the growth of a plant. Alan and Monica put 100 grams of fertilizer X in pot 1.

They put 0 grams of fertilizer X in pot 2.
What is pot 2 called in science?
A.
a test group
B.
a data group
C.
an observational group
D.
a control group
Physics
1 answer:
BARSIC [14]3 years ago
7 0

Answer:

D.

a control group

Explanation:

In a scientific experiment such as the one above, there is an experimental group and a control group. The experimental group is the group that receives the treatment while the control group does not receive any treatment. The control group helps the researcher to observe if the treatment had any significant effect.

In this case, it will help Alan and Monica to determine if fertilizer X actually had an effect on the plant. Therefore, the pot with o grams of fertilizer in it is the control group.

You might be interested in
Does the uphill or downhill direction matter to the speed of the marble, or is the height the only contributing variable?
USPshnik [31]
B down hill is the fastest
3 0
3 years ago
A body in simple harmonic motion has a displacement x that varies in time t according to the equation x = 5cos(π t + π/3) , wher
zhuklara [117]

Answer:

1/2 Hz

Explanation:

A simple harmonic motion has an equation in the form of

x(t) = Acos(\omega t - \phi)

where A is the amplitude, \omega = 2\pi f is the angular frequency and \phi is the initial phase.

Since our body has an equation of  x = 5cos(π t + π/3) we can equate \omega = \pi and solve for frequency f

2\pi f = \pi

f = 1/2 Hz

7 0
3 years ago
Read 2 more answers
Technician A says when diagnosing an overheating hydraulic system, be sure that the oil cooler is not plugged and the cooler’s f
mel-nik [20]

Answer:

Tech B is correct and Tech A is incorrect.

Explanation:

Here Tech A is wrong because when diagnosing an overheating hydraulic system, it is not necessary to un plugg the oil cooler rather it should be plugged to for proper diagnosis.

Technician B says running the hydraulic system at a lower operating temperature will reduce the possibly of oil oxidation is correct statement because at temperature oil's physical as well as chemical property tend to change.

Hence, Tech B is correct and Tech A is incorrect.

8 0
3 years ago
After hearing about an accident on his normal route, Mr. Gujral checks for alternate routes to get to work. What type of circuit
shtirl [24]

Answer:

C

Explanation:

a parallel circuit because there is more than one path

3 0
3 years ago
A substance with a pH of 4.0 will
eimsori [14]
PH of 4 is Acidic and its property is to turn blue litmus red
5 0
4 years ago
Read 2 more answers
Other questions:
  • The police department is excited to have some new motorcycle units. One officer said that these motorcycles can go from 0 miles
    12·1 answer
  • What is the most immediate driving force behind pulmonary ventilation?
    11·1 answer
  • A real object with height of 3.20 cm is placed to the left of a converging lens whose focal length is 90cm. The image is on the
    13·1 answer
  • A physician has a patient that he believes has had foul play. What type of autopsy would the physician request?
    9·1 answer
  • When one object pushes or pulls another object the first object is
    8·1 answer
  • A human being can be electrocuted if a current as small as 50 mA passes near the heart. An electrician working with sweaty hands
    12·1 answer
  • What is the final velocity of a 10 kg object that drops from rest and falls for 30 seconds?
    13·1 answer
  • As wavelength decreases, frequency and energy _________________;
    10·1 answer
  • Is kane brown a true country singer?<br> A.yes<br> B.no
    7·2 answers
  • When an object is placed 30.0 cm in front of a concave mirror, a real image is formed 60.0 cm
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!