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Nikolay [14]
3 years ago
12

A research student wants to know whether ethanol is a better fuel than gasoline. Which step in the process of scientific inquiry

has already been completed?
Physics
2 answers:
DerKrebs [107]3 years ago
4 0

Answer:

Asking a scientific question

Explanation:

tigry1 [53]3 years ago
3 0

Answer:

Asking a scientific question

Explanation:

Scientific inquiry is using evidence from observations and investigations to create logical explanations and answer questions. Scientific inquiry is for people who want to be challenged and use creative and critical thinking to answer questions related to science.

The scientific method has five basic steps;

1. Ask a Question (just like the research student asking which is a better fuel between ethanol and gasoline)

2. Do Background Research

3. Construct a Hypothesis

4. Test Your Hypothesis by Doing an Experiment

5. Analyze Your Data and Draw a Conclusion

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A circular coil has a 18.0 cm radius and consists of 25.0 closely wound turns of wire. An externally produced magnetic field of
djverab [1.8K]

Answer:

The magnetic flux links to its turns = 7.6 \times10^{-3} Wb.

Explanation:

Given :

Radius of circular coil = 18 \times 10^{-2} m

Number of turns = 25

Magnetic field = 3 \times10^{-3} T

Magnetic flux (Φ) is a measure of the magnetic field lines passes through a given area. The unit of magnetic flux is weber (Wb).

We know that,

⇒    Φ = BA

Where B = ext. magnetic field, A = area of loop or coil.

But here given in question, we have turns of wire so our above eq. modified as follows.

⇒   Φ = NBA

Where N = no. of turns.

∴    Φ = 25 \times 3 \times 10^{-3}  \pi (18 \times10^{-2} )^{2}

     Φ = 7.6 \times 10^{-3} Wb

Thus, the magnetic flux links to its turns = 7.6 \times 10^{-3} Wb

3 0
4 years ago
An object experiences an impulse, moves and attains a momentum of 200 kg·m/s. If its mass is 50 kg, what is its velocity?
Nady [450]

Answer:

4 m/s

Explanation:

Momentum is defined as:

p=mv

where

m is the mass of the object

v is its velocity

For the object in this problem, we know:

p = 200 kg m/s is the momentum

m = 50 kg is the mass

Solving for the velocity, we find:

v=\frac{p}{m}=\frac{200}{50}=4 m/s

8 0
3 years ago
A sign is attached to the side of a building as seen below. The sign is attached to a steel rod. A wire connects to the end of t
Kruka [31]

Answer:

500N

Explanation:

50kgx10N/kg

= 500N

3 0
3 years ago
What is kinematics??? explain!!!​
posledela

Answer:

Kinematics is the study of motion of a system of bodies without directly considering the forces or potential fields affecting the motion. In other words, kinematics examines how the momentum and energy are shared among interacting bodies.

3 0
3 years ago
Read 2 more answers
A particle in uniform circular motion requires a net force acting in what direction? Group of answer choices In the direction of
Annette [7]

Answer:

Towards the center of the circle

Explanation:

When an object is moving in uniform circular motion, it means that it is moving at a constant speed in a circular path.

In order to follows a circular path, the particle must have a net force acting on it, that it makes it constantly changing direction - and therefore, causing an acceleration - and this force is called centripetal force.

The direction of this centripetal force is always towards the centre of the circular path.

The nature of the centripetal force is always different, depending on the situation. For instance: for a satellite orbiting the Earth in circular motion, the centripetal force is provided by the force of gravity. For a car moving round a curve, the centripetal force is provided by the force of friction between the tyres and the road.

The magnitude of the centripetal force is given by

F=m\frac{v^2}{r}

where

m is the mass of the object

v is its speed

r is the  radius of the circle

3 0
3 years ago
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