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
Amiraneli [1.4K]
3 years ago
5

4. Susan observed that different kinds and amounts of fossils were present in a cliff behind her house. She wondered why changes

in fossil content occurred from the top to the bottom of the bank. She marked the bank at five positions: 5, 10, 15, 20 and 25 m from the surface. She removed 1 bucket of soil from each of the positions and determined the kind and number of fossils in each sample.
Hypothesis:
Independent Variable:
Dependent Variable:
Constant (at least one):
Control:
Number of groups:
Number of trials per group:
Physics
2 answers:
8090 [49]3 years ago
8 0

Answer:

A scientific experiment is divided into two sample groups: control and the experimental. The control group lacks the key variable to be studied while the experimental group contains the sample to be studied.

The experiment contains three experiments: the variable to be studied (dependent variable), the variable which can be changed and influence the dependent variable (independent variable) and the variable which do not change in the experiment (constant variable).

In the given experiment,  

1. Hypothesis: when the height changes in soil, the content of the fossil in the soil also changes.

2. Independent Variable: the height of the bank from surface

3. Dependent Variable: the number and type of fossil.

4. Constant variable: the amount of soil in the bucket

5. Control: the soil at the surface (0 cm)

6. Number of groups: 5 groups

7. Number of trials per group: should be 3

posledela3 years ago
3 0
5,10,15,20,25,30, that's how much it should have been
You might be interested in
Five 60 ohm resistors are connected in parallel. What is their equivalent resistance?
Mnenie [13.5K]

Answer:

i think the answer is 12 ohms

plz mark me as brainliest :)

7 0
3 years ago
Read 2 more answers
~~~!Here's the question!~~~
gtnhenbr [62]
The answer would most likely be A since obviously gravity weighs things down which helps the every other masses stay settled in place
6 0
3 years ago
Read 2 more answers
A bicycle tire has a radius of 0.23 m. the tire spins at a constant speed with a centripetal acceleration of 42 m/s2. what is th
vredina [299]

Answer:

a = v^2/r      centripetal acceleration

v = (a * r)^1/2 = (42 * .23)^1/2 = 3.1 m/s

3 0
2 years ago
Read 2 more answers
Which of the following examples could this free body diagram describe? (Check all that apply)
boyakko [2]

Answer:

A car accelerating to the right

Explanation:

The free-body diagram shows all the forces acting on an object. The length of each arrow is proportional to the magnitude of the force represented by that arrow.

In this free-body diagram, we see that there are 4 forces acting on the object, in 4 different directions. We also see that the two vertical forces are equal so they are balanced, while the force to the rigth is larger than the force to the left: this means that there is a net force to the right, so the object is accelerating to the right.

Therefore, the correct answer is:

A car accelerating to the right

5 0
3 years ago
Someone please help! It is a few science questions. Fairly easy!
borishaifa [10]
1) 0.92 * 100 = 92 <Solve using the formula which is:
Mass=Density×Volume
M=D*V

2) 3.98 ml

3) V=L*W*H (Length  × Width × Height)

5*2*4=40
\frac{300}{40} =7.5 (Answer=7.5)
3 0
3 years ago
Read 2 more answers
Other questions:
  • You stand on a spring scale on the floor of an elevator. The scale shows the highest reading when the elevator
    11·1 answer
  • Two long parallel wires each carry 2.2 A in the same direction, with their centers 1.8 cm apart.A. Find the magnitude of the mag
    15·1 answer
  • The magnetic domains in a non-magnetized piece of iron are characterized by which orientation
    12·1 answer
  • Which scale is being described? Water freezes at 32 . Water freezes at 0 . Water freezes at 273 .
    14·2 answers
  • A brave child decides to grab onto an already spinning merry‑go‑round. The child is initially at rest and has a mass of 25.5 kg.
    5·1 answer
  • Why does sound travel faster under water??
    12·1 answer
  • The distance versus time graph for Object A and Object B are shown. (3 points)
    14·2 answers
  • (3.16_Q2) Which weights would you use on a single thread to create a 6.86 N force? Question 2 options: Weight IDs A, B, C, D Wei
    14·1 answer
  • A herdsman yelling out to a fellow herdsman heard his voice reflected by a cliff 4s later.What is
    12·1 answer
  • What percent of air by volume is nitrogen​
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!