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2 years ago

What does "Time (s)” represent in the graph? the y-axis the dependent variable an inverse relationship the independent variable

Physics

2 answers:

MArishka [77]2 years ago

7 0

Answer: Time represents independent variable.

Explanation:

Independent variable: These are the variables which not dependent on other variables. Independent variables are used to see the variation in dependent variables. For example age is independent variable.

Time is the example of Independent variable as we cannot fix time or we can say that time cannot stopped. It is variable which doesn't get affected by the other variables.

Dependent variable : These are the variables which are depends upon the independent variables. For example height is a dependent variable.

san4es73 [151]2 years ago

6 0

Independent, and inverse means if one variable increases then the other decreases, direct is when they both go up or down together.

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A 300-n force acts on a 25-kg object. the acceleration of the object is?

Over [174]

To solve the answer use the equation: a = fnet / m

a = 300 N / 25 kg

300 N / 25 kg = 12m/s

The acceleration of the object is 12m/s

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2 years ago

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A car is strapped to a rocket (combined mass = 661 kg), and its kinetic energy is 66,120 J.

aliina [53]

Answer:

9.43 m/s

Explanation:

First of all, we calculate the final kinetic energy of the car.

According to the work-energy theorem, the work done on the car is equal to its change in kinetic energy:

$W=K_f - K_i$

where

W = -36.733 J is the work done on the car (negative because the car is slowing down, so the work is done in the direction opposite to the motion of the car)

$K_f$ is the final kinetic energy

$K_i = 66,120 J$ is the initial kinetic energy

Solving,

$K_f = K_i + W = 66,120 + (-36,733)=29,387 J$

Now we can find the final speed of the car by using the formula for kinetic energy

$K_f = \frac{1}{2}mv^2$

where

m = 661 kg is the mass of the car

v is its final speed

Solving for v, we find

$v=\sqrt{\frac{2K_f}{m}}=\sqrt{\frac{2(29,387)}{661}}=9.43 m/s$

3 0

3 years ago

A nuclear power plant, a hydroelectric dam, a coal burning power plant have what in common? A) They are all sources of fuel. B)

Rudik [331]

B) They are all sources of electricity

Hope it helps!!

7 0

3 years ago

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In order to induce electrical energy into a conductor or generator, what three factors must be present?

salantis [7]

The electricity produced by a generator works through the concepts of the following three factors; magnetic field, voltage and current. When a conductor with current flowing in it is placed in a magnetic field, it will cause the electrons to move in a direction perpendicular to the magnetic field. When working with generators, the guide for this direction is Fleming's Right Hand Rule. Since the electron move in perpendicular motion with magnetic field all the time, it would cause it to spin in a helical direction. These turns would then induce voltage and create electricity.

6 0

3 years ago

PLEASE HELP ASAP

77julia77 [94]

Answer:

<em>The first choice (32m/s) is the closest to the answer</em>

Explanation:

The magnitude of a vector is the distance between the initial and the end point of the vector.

Being Vx and Vy the horizontal and vertical components of the vector V respectively, the magnitude of V is calculated as:

$\mid \vec{V} \mid =\sqrt{V_x^2+V_y^2}$