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
vova2212 [387]
2 years ago
6

Marie is puzzled by her findings she has done several meticulous calculations and has gotten the numbers .37 rad, .89 rad and 1.

65 rad. she was expecting .90 rad each time. she has been which of the following?
a. neither precise and accurate
b. both precise and accurate
c. precise
d. accurate
Physics
1 answer:
Irina-Kira [14]2 years ago
6 0

Answer:

I think the answer is a

Explanation:

for it to be accurate has be to exactly 0.9 rad

it is not precise because the answer she is getting is different everytime and not even close. For instance,

It would have been precise if she had gotten 0.37 rad in every attempt. or 0.89 every attempt...

You might be interested in
Select the correct answer
VMariaS [17]

Answer:

Mary's average speed is 0.42 meters/second.

Explanation:

Mary's total travel was 250 meters and the elapsed time was 10 minutes, equivalent to 600 seconds.

d = displacement = 80 meters + 125 meters + 45 meters = 250 meters                  

t = time = 10 minutes . 60 seconds/minute = 600 seconds

We can obtain now the average speed:

s = average speed = displacement / time = 250 meters / 600 seconds ≅ 0.4167 ≅ 0.42

4 0
2 years ago
An Olympic track runner starts from rest and has an acceleration of 2.4 m/s2 for 3.6 s, then has zero acceleration for the remai
rjkz [21]

Answer:

The runner's speed at the following times would remain 8.64 m/s.

Explanation:

Acceleration definition: Acceleration is rate of change in velocity of an object with respect to time.

In this case, after 3.6 seconds the acceleration is zero, it means that the velocity of the runner after 3.6 seconds is not changing and it will remain constant for the remainder of the race. Now, we have to find the velocity of the runner that he had after 3.6 seconds and that would be the runner's speed for the remainder of the race. For this we use first equation of motion.

First equation of motion:        Vf = Vi + a×t

Vf stands for final velocity

Vi stands for initial velocity

a stands for acceleration

t stands for time

In the question, it is mentioned that the runner starts from rest so its initial velocity (Vi) will be 0 m/s.

The acceleration (a) is given as 2.4 m/s²

The time (t) is given as 3.6 s

Now put the values of Vi, a and t in first equation of motion

                       Vf = Vi + a×t

                       Vf = 0 + 2.4×3.6

                       Vf = 2.4×3.6

                       Vf = 8.64 m/s

So,the runner's speed at the following times would remain 8.64 m/s.

5 0
2 years ago
This DNA strand consists of eight pairs of nitrogenous bases. How many different sequences of eight bases can you make?
BaLLatris [955]

Answer:

assuming that there is an equal amount of each base, you can make 65,536 bases

Explanation:

Adenine(A) Guanine(G) Thymine(T) and Cytosine(C) are the 4 nitrogen bases.

8 0
3 years ago
A thermal hazard symbol means your should wear protective clothing so that you do not get burned. True False
Ivan
True. If something is thermal, that means that by getting to close to it, you could get burned.
3 0
3 years ago
The first electric generators used direct current, so they needed to be reversed manually on a regular basis in order to work pr
djyliett [7]
Could I see the questions
4 0
3 years ago
Other questions:
  • Please help. Due today. Will give brainliest, thanks, and rate. Thanks in advance:)
    8·2 answers
  • A plateau is made of sandstone of varying densities. How is the plateau likely to change over time?
    9·1 answer
  • How many gallons of blood does it pump? (Estimate that the heart pumps 50 cm3 of blood with each beat.)
    10·2 answers
  • What is the lowest frequency that will resonate in an organ pipe 2.00 m in length, closed at one end? The speed of sound in air
    15·1 answer
  • A skier is traveling down a slope that is inclined 30° above the horizontal. The coefficient of kinetic friction between the ski
    12·1 answer
  • Please help it’s urgent!
    5·1 answer
  • Iron is a solid phase of iron still unknown to science. The only difference between it and ordinary iron is that Iron forms a cr
    9·1 answer
  • 8th grade will give brainliest there are no answers to this question
    14·2 answers
  • A heat engine is used to convert heat into which of the following?
    15·1 answer
  • A wire is joined to points X and Y in the circuit diagram shown. A diagram of a circuit with a power source on the left. Directl
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!