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
LiRa [457]
2 years ago
12

A physicist wants to estimate the rate of emissions of alpha particles from a certain source. He counts 400 emissions in 80 seco

nds. Estimate the rate, in emissions per second and find the uncertainty in this estimate.
Physics
1 answer:
lyudmila [28]2 years ago
7 0

Answer:

Emissions per second = 0.36

Explanation:

Please find the attached question

Solution

Given  

Let X be the rate of background emission.

X = B/t  

Where B = 36

And t = 100

X = 36/100 = 0.36

You might be interested in
Caves are formed from?​
SCORPION-xisa [38]

Answer:

caves are mainly formed by water or in some other cases limestone.

6 0
2 years ago
What are some examples of transverse waves?
Deffense [45]

Answer:

-ripples on the surface of water.

-vibrations in a guitar string.

-a Mexican wave in a sports stadium.

-electromagnetic waves – eg light waves, microwaves, radio waves.

-seismic S-waves.

Explanation:

I've done this question before

7 0
3 years ago
Which compound has the highest boiling point? Explain your reasoning. CH4 or CH3CH3
kogti [31]

The bigger molecule has more interactions and hence the higher b.p. CH3CH2OCH2CH3 is a bigger molecule than CH4 and CH3CH3, so has more dispersion forces. It also has dipole-dipole forces due to the polarised C-O bonds. CH3OH and CH3CH2OH have hydrogen bonds due to the very electronegative O atom bonded to the H atom

God bless

4 0
2 years ago
Read 2 more answers
A storm is moving east towards your house at an average speed of 35 km / hr. If the storm is currently 80 km from your house, ho
lesya692 [45]

Answer:

The expected time is 2.28 hours.

Explanation:

The speed of storm = 35 km/hr

The distance between the house and the storm = 80 km.

Now, we have to find the time taken by storm to arrive at the house. Here, we can determine the time by dividing the distance with speed.

The time, taken by storm =  Distance/speed

The time, taken by storm = 80 / 35

The time, taken by storm = 2.28 hours.

5 0
3 years ago
Which of the following is a sign that a person may be attempting to meet an unrealistic health goal?
kotegsom [21]
The correct answer should be a tendon rupture

Weight loss, muscle strength, and increased joint flexibility are quite common for people who work out regularly. Tendons rupture however occurs when people do something that they were not designed to do.
7 0
3 years ago
Read 2 more answers
Other questions:
  • Two large thin metal plates are parallel and close to each other. On their inner faces, the plates have excess surface charge of
    11·1 answer
  • Charges q, q, and – q are placed on the x-axis at x = 0, x = 4 m, and x = 6 m, respectively. At which of the following points do
    6·1 answer
  • What is the difference between the velocity and the speed of an object?
    14·1 answer
  • Match the correct term with each part of the wave
    7·1 answer
  • Explain why solar energy is considered an inexhaustible source of energy
    10·1 answer
  • What did Rutherford discover about the structure of the atom
    15·1 answer
  • The direction of a natural process is indicated by which of the following? A. conservation of energy. B. change in entropy C. th
    8·1 answer
  • How is the frequency of sound measured? <br><br><br> answer asap!!
    12·1 answer
  • (11%) Problem 5: A submarine is stranded on the bottom of the ocean with its hatch 25 m below the surface. In this problem, assu
    6·2 answers
  • What is Motion ????? ​
    7·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!