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
pychu [463]
3 years ago
8

The length of the student desk is measured using a

Physics
1 answer:
charle [14.2K]3 years ago
4 0

Answer:

3 significant figures are in 1.02m

Explanation:

You might be interested in
How many electrons does it take to make up 4.33 C of charge?
Dovator [93]

Answer:

Number of electrons, n=2.7\times 10^{19}

Explanation:

It is given that,

Charge, q = 4.33 C

We need to find the number of electrons that make 4.33 C of charge. According to quantization of charge as :

q=ne

n = number of electrons

e = electron's charge

n=\dfrac{q}{e}

n=\dfrac{4.33\ C}{1.6\times 10^{-19}\ C}

n=2.7\times 10^{19}

So, the number of electrons are 2.7\times 10^{19} Hence, this is the required solution.  

7 0
2 years ago
Objects 1 and 2
sattari [20]

Answer:

12 units

Explanation:

Original F = C q1q2/r^2    now change the parameters

  New F = C  1/3 q1  2 q2  / (2r)^2

              =  2/12  C q1q2/r^2    <=======the new force is 1/6 of original

1/6 * 72 = 12 units  

3 0
2 years ago
A 3.6kg mass is accelerated at 2.5m/s. Calculate the resultant force<br> acting on it.
AleksandrR [38]
Force = mass*acceleration so
3.6*2.5 =9 Newtons
5 0
2 years ago
Two wave pulses move toward each other along a rope.
mojhsa [17]

Answer:

The answer is B. It is the one that has the triangle pointing up on the topside of the rope and seems to be a bit bigger than the other triangles.

Explanation:

7 0
2 years ago
Read 2 more answers
a whistle you use to call your hunting dog has a frequency of 21 khz, but your dog is ignoring it. you suspect the whistle may n
laila [671]

To solve this problem we will apply the concepts related to the Doppler effect. According to this concept, it is understood as the increase or decrease of the frequency of a sound wave when the source that produces it and the person who captures it move away from each other or approach each other. Mathematically this can be described as

f = f_0 (\frac{v-v_0}{v})

Here,

f_0 = Original frequency

v_0 = Velocity of the observer

v = Velocity of the speed

Our values are,

v = 340m/s \rightarrow \text{Speed of sound}

f = 20kHz \rightarrow \text{Apparent frequency}

f_0 = 21kHz \rightarrow \text{Original frequency}

Using the previous equation,

f = f_0 (\frac{v-v_0}{v})

Rearrange to find the velocity of the observer

v_0 =v (1-\frac{f}{f_0})

Replacing we have that

v_0= (340m/s)(1-\frac{20kHz}{21kHz})

v_0 = 16.19m/s

Therefore the velocity of the observer is 16.2m/s

4 0
3 years ago
Other questions:
  • What happens to the temperature of a gas when it is compressed? a the temperature does not change. b the temperature increases.
    7·2 answers
  • Referring to the map of the temperature field in the room, where was the warmest field found?
    8·2 answers
  • In an inelastic collision a 2.5 kg ball moving at 7.5 m/s is caught by a 70kg man while the man is standing on ice. What is the
    14·1 answer
  • A car is traveling at 20 m/s. It takes the car 120s to go from one intersection to a second. What was the displacement of the ca
    11·1 answer
  • Why do high and low tides happen 1 hour later each day? just answer please and it is a written response
    11·1 answer
  • Josh did an experiment recording the changes in temperature in sand and water when exposed to a light source, and then when the
    12·2 answers
  • How does the electric force between two charged objects change when the
    7·1 answer
  • What is an advantage of wind energy over solar energy? *
    11·2 answers
  • Diagram... At which location would the moon most likely be in a FULL MOON phase (all of the lit side visible)? *
    11·1 answer
  • A computer printer has a width of 18in. What is it’s width
    8·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!