Wave frequency is the number of waves that pass a fixed point in a given amount of time.
Explanation:
Wave frequency is the number of waves that pass a fixed point in a given amount of time. The SI unit for wave frequency is the hertz (Hz), where 1 hertz equals 1 wave passing a fixed point in 1 second. A higher-frequency wave has more energy than a lower-frequency wave with the same amplitude.
Spring tides occur when the Earth, sun and moon are aligned. Despite its name spring tides have nothing to do with the Spring season. It was derived from the concept of "springing-forth" . They occur at twice each lunar month, bringing higher tides during high tide and lower tides during low tide.
Answer: concrete
Explanation: because of the absorption
(from Penn Foster) ⭐⭐⭐⭐⭐
Material Coefficient of Absorption
Perforated acoustic ceiling material 60%
Heavy curtains (A) 50%
Carpeting (B) 20%
Wood (C) 5%
Plaster 3%
Clay tile (D) 3%
Concrete 2%
The answer is A. Heavy curtains ✅
A - a hypothesis is a question a scientist wants to research
Explanation:
i think so anyway.
Answer:
Explanation:
AI-generated answer
A hypothesis is a statement that predicts what will be observed in an investigation. It is based on background research performed by the scientist and is usually written in an if-then format that describes the proposed relationship between variables. Therefore, all of the statements listed are true about hypotheses.
1. A hypothesis is a question a scientist wants to research.
2. A hypothesis is a statement that predicts what will be observed in an investigation.
3. A hypothesis is based on background research performed by the scientist.
4. A hypothesis is usually written in an if-then format that describes the proposed relationship between variables.
Since the question asks for an exception, it means that all of the statements are true.
Answer:
At center of ruler.
Explanation:
The center of gravity is defined as the point at which the object can be balanced. Due to different structure, weight and size, center of gravity changes from object to object.
In this case we have a plastic ruler which has a homogeneous structure, that means its weight is equally distributed through out. So its center of gravity must be at a point which is at equal distance from the both ends ( center ).
what does I=
Answer:
I amperes
Explanation:
Newton is the unit of force. Hence 4 newton is not the current “I”
Joules is the unit of energy and hence it do not signify current I
Watt is the unit of power i.e the rate of transfer of energy.
Ohm is the unit of resistance produces thereby obstructing the flow of current
And Volts is the unit of voltage or potential difference between two ends of an electric circuit. Thus, it is also does not signifies current.
Thus, I amperes