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3 years ago

Please help!! I’m in a rush :(

Physics

1 answer:

Burka [1]3 years ago

3 0

Kinetic energy is a form of energy that an object or particle has by reaction of its motion.

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Students perform a set of experiments by placing a block of mass m against a spring, compressing the spring a distance x along a

Verizon [17]

Increasing the angle of inclination of the plane decreases the velocity of the block as it leaves the spring.

The statement that indicates how the relationship between v and x changes is; As x increases, v increases, but the relationship is no longer linear and the values of v will be less for the same value of x.

Reasons:

The energy given to the block by the spring = $\mathbf{0.5 \cdot k \cdot x^2}$

According to the principle of conservation of energy, we have;

On a flat plane, energy given to the block = $0.5 \cdot k \cdot x^2$ = kinetic energy of

block = $0.5 \cdot m \cdot v^2$

Therefore;

0.5·k·x² = 0.5·m·v²

Which gives;

x² ∝ v²

x ∝ v

On a plane inclined at an angle θ, we have;

The energy of the spring = $\mathbf{0.5 \cdot k \cdot x^2}$

The force of the weight of the block on the string, $F = m \cdot g \cdot sin(\theta)$

The energy given to the block = $0.5 \cdot k \cdot x^2 - m \cdot g \cdot sin(\theta)$ = The kinetic energy of block as it leaves the spring = $\mathbf{0.5 \cdot m \cdot v^2}$

Which gives;

$0.5 \cdot k \cdot x^2 - m \cdot g \cdot sin(\theta) = 0.5 \cdot m \cdot v^2$

Which is of the form;

a·x² - b = c·v²

a·x² + c·v² = b

Where;

a, b, and c are constants

The graph of the equation a·x² + c·v² = b is an ellipse

Therefore;

As x increases, v increases, however, the value of v obtained will be lesser than the same value of x as when the block is on a flat plane.

Please find attached a drawing related to the question obtained from a similar question online

The possible question options are;

As x increases, v increases, but the relationship is no longer linear and the values of v will be less for the same value of x

The relationship is no longer linear and v will be more for the same value of x

The relationship is still linear, with lesser value of v

The relationship is still linear, with higher value of v

The relationship is still linear, but vary inversely, such that as x increases, v decreases

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brainly.com/question/9134528

6 0

2 years ago

if the efficiency of an electric furnace is 96%, then 96% of the input energy is transformed into thermal energy. what is the ot

Nonamiya [84]

It is wasted, most likely as light, in this case, or it is lost during the transport of electricity.

5 0

3 years ago

The left hemisphere of the brain controls the right side of the body. Please select the best answer from the choices provided T

olga nikolaevna [1]

Answer:

True

Explanation:

The different sides control the opposite side of the human body

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2 years ago

The ampere is a unit of which physical quantity?

hram777 [196]

Electrical current is measured using the ampere.

7 0

3 years ago

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Prove the correctness of this equation s=vt + 1/2at

miss Akunina [59]

Answer:

Equation of motion

Explanation:

this equation is known as the second equation of motion and it is used to calculate the distance travelled (s) by a body in time (t), the body having initial velocity (u) and acceleration (a). This equation has four values in it, so if any three values are known, the fourth value can be calculated.

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3 years ago