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BartSMP [9]
3 years ago
10

Question 3 (1 point)

Physics
1 answer:
g100num [7]3 years ago
3 0

Answer:

B) 18.5 m/

s west

Explanation:

Scalar quantity has MAGNITUDE only

Vector quantity has MAGNITUDE and DIRECTION

Hope this is correct and helpful

HAVE A GOOD DAY!

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The potential energy for a certain mass moving in one dimension is given by U(x)=(2.0J/m3)x3−(15J/m2)x2+(36J/m)x−23JU(x)=(2.0J/m
Angelina_Jolie [31]

Answer:x=2 and x=3

Explanation:

Given

Potential Energy for a certain mass is

U(x)=2x^3-15x^2+36x-23

and we know force is given by

F=-\frac{\mathrm{d} U}{\mathrm{d} x}

F=-(2\times 3x^2-15\times 2x+36)

For Force to be zero F=0

\Rightarrow 6x^2-30x+36=0

\Rightarrow x^2-5x+6=0

\Rightarrow x^2-2x-3x+6=0

\Rightarrow (x-2)(x-3)=0

Therefore at x=2 and x=3 Force on particle is zero.

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A student used a yardstick to model the displacement of rock at a fault during an earthquake. The student bent the yardstick wit
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I think the correct answer would be B. The process of elastic rebound is being shown by the student. It is a theory that is used to explain earthquakes. It focuses on how energy is being spread in times of earthquakes. As the rocks on the fault experiences shift and force, these rocks would be accumulating energy causing it to deform reaching the internal strength and eventually exceeding it. At that moment, a rapid motion would happen along the fault, which releases the energy, then the rocks would go back to its original shape or the undeformed state. This theory is the first theory that sufficiently was able to explain earthquakes.
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2 years ago
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Where are the magnetic fields strongest near a bar magnet?
KatRina [158]
The answer is near the poles.
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2 years ago
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Which statement identifies the chemical property of iron that results in the formation of rust?
Maru [420]

Answer:

B, It reacts with oxygen to form a new substance

Explanation:

B

4 0
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Students are going to conduct an experiment to study the effect of a net force applied to an object on the object’s motion. In e
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Answer:

A. velocity and time

Explanation:

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From Newton's second law of motion;

F = ma

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a = \frac{change in velocity}{change in time}

In the given question, apart from the mass of the object which is constant, the students should take the measurements of the velocity and time in each trial so as to calculate the required acceleration.

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