The statement ‘An electromagnet is a strong magnet that can be turned on and off’ is true. The answer is letter A. An electromagnet can be made through wrapping the wire that has an electric current around a nail. It can be increase through the number of loops wrapped around the metal.
Answer:
true
Explanation:
energy is released when matter is destroyed
B
mass and energy are equivalent
C
the law of conservation of energy must be modified to state that mass and energy are conserved in any process
D
all of the choices
- Atoms are not divisible into smaller particles.
- It is impossible to define the mass of an atom.
- The atom contains no particles that have a neutral charge.
Answer:
- The positive charge in an atom is concentrated in one location.
Explanation:
In Rutherford's experiment when alpha particles are projected towards the gold foil then he observed that major proportion of the alpha particles are moved out undeviating.
This shows that alpha particles which are positively charged are not repelled by other positive charge of nucleus as it is concentrated at small part of atom
because very few alpha particles are reflected back at 180 degree so he concluded that nucleus charge is concentrated at very small space
and that part is termed as nucleus.
so correct answer is
- The positive charge in an atom is concentrated in one location.
Answer:
Option A
interpreting results
Explanation:
In a Scientific research, we first formulate and test hypothesis of the study. A hypothesis is a tentative guess in the study which should be validated in the process of the study. We may have a null and alternative hypothesis. After formulating the study, we conduct the actual study where we get raw data. The raw data is then analyzed, in many cases using statistical analysis tools such as R, python, excel spreadsheet etc. Therefore, the next step after formulating and objectively testing hypotheses is to interpret the results.
In the steps of the scientific method, the next step after formulating and objectively testing hypotheses is interpreting results.
Scientific method is an experimental method used in scientific research for evaluating a scientific hypothesis. The process of carrying out scientific method involves observation, then asking questions, followed by finding answers via carrying out experiments.
The steps involved in the carrying out scientific methods includes the following processes:
Therefore, we can conclude that in the steps of scientific methods, the next step after formulating hypotheses is interpreting results.
Learn more about scientific methods here:
b. a summary of key points.
c. a restatement of your thesis.
d. a deduction or inference about the information presented.
Answer:
A). A Topic Sentence
Explanation: Confirmed By The Cheat Sheet