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
Fittoniya [83]
3 years ago
9

You have decided to study the effect of loud noise on plant growth. You put one plant in a quiet room and the other plant in you

r school's band hall. Providing each plant with the same amount of water is an example of a
a. data.
b. control.
c. variable.
d. observation.
Physics
2 answers:
-Dominant- [34]3 years ago
5 0

Answer:

The correct answer will be option-B.

Explanation:

The scientific experiments are performed to study the hypothesis and prove it.  The scientific factor to be studied in the experiment are known as the "variables". The variables can be "independent variables" which can control and changed, "dependent variables" which remains constant and to be studied and control variables which are kept constant in the experiment.

In the given question, the experiment is performed to study the effect of "loud noise" on the growth of plants so the dependent variable is plant growth dependent on loud noise. Since the same amount of water is provided to each plant will be a controlled variable.

Thus, Option-B is the correct answer.

wel3 years ago
4 0
The answer is B. Controlled variable.<span />
You might be interested in
Which of the following is not a way to make exercising on a cold day safer?
IRISSAK [1]

Answer:

D.

Explanation:

I think its D. because Tea during a cold workout isnt safe at all. Drinking tea while working out adds weight and you just simply dont need tea when working out.. Hope this helps man :)

4 0
3 years ago
Read 2 more answers
Which of the following elements most likely has the highest boiling point?
JulsSmile [24]

Answer:

Explanationalluminiim

4 0
3 years ago
Read 2 more answers
Sam, whose mass is 78 kg , stands at the top of a 11-m-high, 110-m-long snow-covered slope. His skis have a coefficient of kinet
Valentin [98]

Answer:

v = 8.09   m/s

Explanation:

For this exercise we use that the work done by the friction force plus the potential energy equals the change in the body's energy.

Let's calculate the energy

       

starting point. Higher

         Em₀ = U = m gh

final point. To go down the slope

         Em_f = K = ½ m v²

The work of the friction force is

         W = fr L cos 180

to find the friction force let's use Newton's second law

Axis y

        N - W_y = 0

        N = W_y

X axis

        Wₓ - fr = ma

let's use trigonometry

        sin  θ = y / L

         sin θ = 11/110 = 0.1

         θ = sin⁻¹  0.1

          θ = 5.74º

         sin 5.74 = Wₓ / W

         cos 5.74 = W_y / W

         Wₓ = W sin 5.74

         W_y = W cos 5.74

the formula for the friction force is

         fr = μ N

         fr = μ W cos θ

Work is friction force is

         W_fr = - μ W L cos θ  

Let's use the relationship of work with energy

        W + ΔU = ΔK

         -μ mg L cos 5.74 + (mgh - 0) = 0  - ½ m v²

        v² = - 2 μ g L cos 5.74 +2 (gh)

        v² = 2gh - 2 μ gL cos 5.74

let's calculate

        v² = 2 9.8 11 - 2 0.07 9.8 110 cos 5.74

        v² = 215.6 -150.16

        v = √65.44

        v = 8.09   m/s

6 0
3 years ago
Which of the following represents energy in its most disordered form? Group of answer choices Chemical-bond energy Electromagnet
gavmur [86]

Answer: Heat Energy

Explanation:

Heat is energy in its most disordered form. heat energy is the random jostling of molecules and is therefore not organized. As cells perform the chemical reactions that generate order within, some energy is inevitably lost in the form of heat. Because the cell is not an isolated system, the heat energy produced by the cell is quickly dispersed into the cell's surroundings where it increases the intensity of the thermal motions of nearby molecules. This increases the entropy of the cell's environment and keeps the cell from violating the second law of thermodynamics.

5 0
3 years ago
A man pushes his lawnmower with a velocity of +0.75 m/s relative to the ground. A girl rides by on her bike with a velocity of +
SashulF [63]

Answer:

B. +5.75 m/s

Explanation:

When there are two bodies, a and b, whose velocities measured by a third observer (in this case, the ground) are V_a and V_b respectively, the relative velocity of B with respect to A is given by:

V_{ba}=V_b-V_a

Thus, the velocity of the girl relative to the lawnmower is:

V_{ba}=6.5\frac{m}{s}-0.75\frac{m}{s}\\V_{ba}=5.75\frac{m}{s}

8 0
3 years ago
Read 2 more answers
Other questions:
  • What shape are the universe’s largest known galaxies? Question 12 options: A.elliptical B.spiral C.There aren't large galaxies!
    9·1 answer
  • A 2-kg block slides along a rough horizontal surface and slows to 10 m/s after traveling 20 m. If the kinetic coefficient of fri
    7·1 answer
  • explain why a wrecking ball can destroy a building, but a yo-yo cant. Use the term kinetic energy in your explanation.
    5·2 answers
  • Two point charges carrying charges q1 = +3 μC and q2 = −4 μC are fixed on the x − y plane at positions (x1 = 3.5 cm, y1 = 0.5 cm
    5·1 answer
  • A father racing his son has 1/3 the kinetic energy of the son, who has 1/4 the mass of the father. The father speeds up by 1.5 m
    7·1 answer
  • Question 8 (1 point)
    11·1 answer
  • (25 Brainly Points.)
    14·1 answer
  • How many neutrons does element X have if its atomic number is 48 and its mass number is 167?
    11·1 answer
  • Define density in thermodynamics​
    13·1 answer
  • If you catch the ruler 4.9 cm from the lower end, what is your reaction time?
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!