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3 years ago

Action and reaction forces will cancel because they are pushing on the same object toward each other. True or False

Physics

2 answers:

sweet-ann [11.9K]3 years ago

5 0

Answer:

False

Explanation:

Newton's third law states that for every action there is an equal and opposite reaction. The action-reaction pair act on different bodies. Thus, they do not cancel each other.

For example, in order to walk, we push the floor backwards. This is action force which the foot applies to the floor. The floor pushes the foot forward. This is the reaction force. The amount of force is equal but the direction is opposite. Also, the bodies on which action force and reaction force are acting are different.

Hence, the given statement is false.

vampirchik [111]3 years ago

4 0

Sometimes. If the forces are equal, they will cancel out and the net force will be zero. But if the forces are not equal, the object will move away from the stronger force because there is still a net force.

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The light energy that falls on a square meter of ground over the course of a typical sunny day is about 20 MJ . The average rate

Sphinxa [80]

86.4×10^6 joule is energy does one house use during each 24 hr day.

20 MJ of light energy

Consumption of electricity is 1 kW.

The energy consumption lasts for 24 hours.

energy=power×time

energy=10^3×24×3600

energy=86.4×10^6 joule

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8 0

1 year ago

Wood burning in a fire is what property

nadezda [96]

Answer:

Answer=chemical

Explanation:

One of the chemical properties of carbon-based wood is that it has the ability to burn. Wood changes chemically to carbon dioxide when it burns and leaves a residue of ashes..

4 0

3 years ago

What grade of sprain is a completely torn ligament

ludmilkaskok [199]

Grade 3 is a completely torn ligament

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3 years ago

An electric motor exerts a constant torque of 10 Nm on a grindstone mounted on its shaft. The moment of inertia of the grindston

Dmitry_Shevchenko [17]

Answer:

Angular acceleration = 5 rad /s ^2

Kinetic energy = 0.391 J

Work done = 0.391 J

P =6.25 W

Explanation:

The torque is given as moment of inertia × angular acceleration

angular acceleration = torque/ moment of inertia

= 10/2= 5 rad/ s^2

The kinetic energy is = 1/2 Iw^2

w = angular acceleration/time

=5/8= 0.625 rad /s

1/2 × 2× 0.625^2

=0.391 J

The work done is equal to the kinetic energy of the motor at this time

W= 0.391 J

The average power is = torque × angular speed

= 10× 0.625

P = 6.25 W

6 0

3 years ago

A wavelength approaching land at 25 m/s is 4.0 x 102 m. What is its period?

kherson [118]

Answer:

16 s

Explanation:

The frequency of a wave is the number of oscillations of the wave per second. It is given by:

$f=\frac{v}{\lambda}$

where

v is the wave speed

$\lambda$ is the wavelength

For the wave in this problem we have

v = 25 m/s

$\lambda=4.0\cdot 10^2 m=400 m$

So the frequency is

$f=\frac{25}{400}=0.0625 Hz$

The period of a wave is the time taken for one complete oscillation, and it is equal to the reciprocal of the frequency:

$T=\frac{1}{f}$

So the period of this wave is:

$T=\frac{1}{0.0625}=16 s$

4 0

3 years ago