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3 years ago

Four forces are exerted on each of the two objects shown below:

Physics

2 answers:

exis [7]3 years ago

6 0

Answer: Object A but not Object B.

Explanation:

algol [13]3 years ago

6 0

Answer:

A. Object A but not B

Explanation:

Because object A has the most force pulling up, 6 newtons. It has weaker forces pulling on all other sides but the upward force is the strongest

Object b will not go up because it has just as much pulling down on it as it does pulling up. Since there's 3 newtons of force pulling up and 3 pulling down it cancels out and does not move

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A trumpeter is placed on a moving sidewalk that moves at a constant velocity of 4.5 m/s. A listener is standing 6.0 m in front o

bearhunter [10]

You didn't actually include the speed of sound. But it doesn't matter for this question. If the trumpeter and the listener are on the same moving sidewalk then the distance between them is not changing. The Doppler shift only happens when the distance between the source and the Observer is changing. So the Listener hears the same 290 Hertz that the trumpeter is generating.

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3 years ago

Consider the uniform electric field \vec{E} =(4000~\hat{j}+3000~\hat{k})~\text{N/C} E ⃗ =(4000 j ^ +3000 k ^ ) N/

likoan [24]

Answer:

Electric flux $\phi=31562.63\ Nm^2/C$

Explanation:

Given that,

Electric field acting on the circular area, $E=(4000j+3000k)\ N/C$

We need to find the electric flux through a circular area of radius 1.83 m that lies in the xy-plane. It lies in xy plane, such that the area vector point in z direction. The electric flux is given by :

$\phi=E{\cdot}A$

$\phi=(4000j+3000k){\cdot}Ak$

Using dot product properties, we get the value of electric flux as :

$\phi=3000\times Ak$

$\phi=3000\times \pi (1.83)^2$

$\phi=31562.63\ Nm^2/C$

So, the electric flux through a circular area is $\phi=31562.63\ Nm^2/C$ . Hence, this is the required solution.

4 0

3 years ago

A dog walks along The ground. If the dog applies an action force on the ground, what is the reaction force?

fiasKO [112]

Explanation:

Action and reaction are two forces that are equal in magnitude but the direction is opposite.

When a dog walks along the ground, the action force is the force that dog applies on the ground. On the other hand, the reaction force is the force that the ground applies on the dog. It is based on Newton's third law of motion.

8 0

3 years ago

Suppose that you are holding a cup of coffee in your hand identify all forces on the cup and reaction to each force

Stels [109]

Answer:

Newton's third law.

Explanation:

•your hand of holding UP/DOWN the cup has a reaction with force

•Coffee inside the cup is pushing outward to the edges of the cup

•The cup is pushing inward onto the coffee

"His third law states that for every action (force) in nature there is an equal and opposite reaction. In other words, if object A exerts a force on object B, then object B also exerts an equal and opposite force on object A."

3 0

3 years ago

Read 2 more answers

Charge is distributed uniformly throughout the volume of an infinitely long solid Cylinder of radius R what is the electric fiel

Arada [10]

Solution :

Let us consider the Gaussian surface that is in the form of a cylinder having a radius of r and a length of A which is $\text{coaxial with the charged cylinder}$ .

The charged enclosed by the cylinder is given by,

$q=\rho V$ (here, V = $\pi r^2l$ is the volume of the cylinder)

$=\pi r^2lp$

If $\rho$ is positive, then the electric field lines moves in the radial outward direction and is normal to Gaussian surface which is distributed uniformly.