deivaraj1999

Write a Python program to accept a string and count the frequency of each vowel.

Which of the following statements is true?
A. As a radioactive isotope decays, its half-life remains the sameand its rate of disintegration remains the same.
B. As a radioactive isotope decays, its half-life remains the sameand its rate of disintegration increases over time.
C. As a radioactive isotope decays, its half-life remains the sameand its rate of disintegration decreases over time.
D. As a radioactive isotope decays, its half-life decreases overtime and its rate of disintegration remains the same.
E. As a radioactive isotope decays, its half-life decreases overtime and its rate of disintegration decreases over time.

Directions: Answer each of the following questions.

1. One isotope of Br has a half-life of 16.5 hours. How much of a 2.00-gram sample remains at the end of 1.00 day?

2. If 160 grams of a 200-gram sample of gold-198 decay in 6.25 days, what is the half-life of gold-198?

3. The symbol for an electron also used to represent a(n)

a. Alpha particle

b. Beta particle

c. Positron

d. Gamma-ray

4. During a fission reaction:

a. A larger and more stable nucleus is formed

b. Energy is absorbed

c. Positrons are always released

d. Smaller and more stable nuclei are formed

5. The half-life of a radioactive isotope

a. Changes over time

b. Is constant

c. Is a characteristic of stable isotopes

d. Decreases in value as time passes

6. Radioactive dating is used to determine the

a. Half-life of a radioactive isotope

b. Type of particle emitted by an isotope as it decays

c. Age of a specimen

d. Time required for half of a radioactive sample to decay

7. Carbon-11 has a half-life of 20 minutes. Explain what this means.

8. Conduct research to identify two naturally occurring radioactive elements and two synthetic radioactive elements.

CRITICAL THINKING:

9. Conduct research to explain how fusion differs from fission. How are the two processes alike? How are they different? (Compare and contrast) Don’t forget to cite your resources.

What causes botulism

G and g are dominant and recessive alleles, respectively, for a gene. If a mating of a gg female with a Gg male resulted in offspring that all have the recessive phenotype, this would most likely be an example of

We see by 

A. Ears 

B. Eyes 

C. Nose 

D. Nails

Based on your answer to the previous question, give an example of a cutoff score that would be statistically significant for one type of test (Z or t) but not the other.

Is it possible to perform a statistical test if the data being analyzed violates one of the test's assumptions? Why or why not?

There are 2 assumptions that must be satisfied for the independent samples t-test to be valid. What are these two assumptions? (Bonus: Name the two statistical tests JASP provides for testing these assumptions.)

I need to design a model and draw it or construct (more advanced) such as a "SPECIAL BLOOD PRESSURE MACHINE PRODUCT THAT IS A WIRELESS, REMOTE MONITORING DEVICE THAT CONNECTS TO A SMARTPHONE APP WITH ACCURATE MEASUREMENTS" for prototyping.

What is black hole?

What is time?

What is education?

What is minimum?

Hello what is your favourite place to visit?

 A geometric gradient that increases at g=6% per year for 15 years is shown in the accompanying diagram at fig (2). The annual interest rate is 12%. What is the present equivalent value of this gradient? 

What is your name