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
Vikentia [17]
2 years ago
8

Michelle learns in science class that simple machines such as an inclined plane can change the amount of force needed to lift he

avy objects. She decides to test this with an experiment.
Michelle chooses a 10 kg weight. She sets up a ramp made of smooth metal that makes an angle θ with the floor. She attaches a spring scale to the weight and the top of the ramp in order to hold the weight in place. She records the force from the spring scale, then changes θ and records it again. She repeats this several times.


In this experiment, what is the outcome variable (dependent variable)?

A.

the angle θ between the ramp and the ground

B.

the mass of the weight

C.

the material the ramp is made of

D.

the amount of force on the spring scale

PLEASE I NEED HELP ON THIS RN AND IT'S DUE TODAY!!!!!!!!

IF YOU POST ANY LINKS THAT ARE PERM-BLOCKED, I WILL REPORT YOU, TAKE YOUR POINTS AWAY, DELETE YOUR ANSWER, AND PROBABLY BAN YOU! IF YOU DO NOT KNOW, DON'T ANSWER!!!!!!!

Chemistry
1 answer:
storchak [24]2 years ago
4 0

Answer: the amount of force on the spring scale

Explanation:

You might be interested in
Can someone please help me with this?--20 pts!
katrin2010 [14]

Answer:

Compound B is ionic. The electronegativity difference is 2.2, which can be determined by subtracting the electronegativity of Element Y from that of Element Z. Electronegativity differences greater than 1.7 indicate ionic bonds.

Hope that helps.

3 0
3 years ago
What mass of aluminum has a total nuclear charge of 1.6 CC? Aluminum has atomic number 13. Suppose the aluminum is all of the is
e-lub [12.9K]

Answer:

aluminium is all of isotope with 14 neutrons .

8 0
3 years ago
Corn plants may be tall (TT or Tt) or short (tt). The breeding of two parent corn plants results in offspring that are all tall.
zubka84 [21]

Answer:

0%

Explanation:

  • The probability that both of the parents are homozygous recessive is zero.
  • In our case, The gene for tallness is dominant over the gene for dwarfism
  • Therefore; TT is homozygous dominant while tt is homozygous recessive and Tt is heterozygous.
  • Heterozygous genotype (Tt) will exhibit a tall phenotype.
  • When two parents are crossed and all the offsprings are tall then the possible genotype of the parents is either;
  1. Homozygous dominant for both parents or  

       TT x TT

    2. One parent is homozygous dominant and the other is homozygous recessive.

        TT x Tt

  • Therefore, the probability of having both parents as homozygous recessive when all the offspring are tall is Zero.      
8 0
3 years ago
Here’s another one guys please help.
ch4aika [34]

Answer:

Explanation:

i think B im not sure

3 0
3 years ago
Which atom in each pair has the larger atomic radius?
nikitadnepr [17]

Answer:

1. Potassium, K.

2. Calcium, Ca.

3. Gallium, Ga.

4. Carbon, C.

5. Bromine, Br.

6. Barium, Ba.

7. Silicon, Si.

8. Gold, Au.

Explanation:

Atomic radius can be defined as a measure of the size (distance) of the atom of a chemical element such as hydrogen, oxygen, carbon, nitrogen etc, typically from the nucleus to the valence electrons. The atomic radius of a chemical element decreases across the periodic table, typically from alkali metals (group one elements such as hydrogen, lithium and sodium) to noble gases (group eight elements such as argon, helium and neon). Also, the atomic radius of a chemical element increases down each group of the periodic table, typically from top to bottom (column).

Additionally, the unit of measurement of the atomic radius of chemical elements is picometers (1 pm = 10 - 12 m).

1. Li or K: the atomic radius of lithium is 167 pm while that of potassium is 243 pm.

2. Ca or Ni: the atomic radius of calcium is 194 pm while that of nickel is 149 pm.

3. Ga or B: the atomic radius of gallium is 136 pm while that of boron is 87 pm.

4. O or C: the atomic radius of oxygen is 48 pm while that of carbon is 67 pm.

5. Cl or Br: the atomic radius of chlorine is 79 pm while that of bromine is 94 pm.

6. Be or Ba: the atomic radius of berryllium is 112 pm while that of barium is 253 pm.

7. Si or S: the atomic radius of silicon is 111 pm while that of sulphur is 88 pm.

8. Fe or Au: the atomic radius of iron is 156 pm while that of gold is 174 pm.

7 0
3 years ago
Other questions:
  • A reaction x  y has a rate constant of 1.37 hr–1 and is allowed to react for 1.2 hours. if the final concentration of x is 0.21
    12·1 answer
  • How many grams of oxygen gas must react to give 2.10g of ZnO?
    13·1 answer
  • PLEASE HELP!!!!!!!! All of the following are common air pollutants that can be damaging to the environment except
    6·2 answers
  • Can someone PLEASE help me! I have missed a few days of school due to sickness and my teacher is making me make up a lab! She ga
    8·1 answer
  • Electric field creates a 3.9 ma current in a 1.0-mm-diameter wire. what material is the wire made of?
    7·2 answers
  • Atomic oxygen would most likely form its most stable monatomic ion when it: 1. elevates one electron from the s orbital to a p o
    12·1 answer
  • Which of the following is true about glass recycling?
    12·1 answer
  • 3) (4.5 x 10-14) x (5.2 x 103) = ?
    8·2 answers
  • Which will dissolve faster in water rock salt or granulated salt
    15·1 answer
  • What is the correct way to smell a chemical
    14·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!