Which of the following methods of improving air quality does not require advanced technology?

An outside force, Fo, brings two small metal spheres, A and B, at rest from a long distance away to a point where they are 1 met

Ksenya-84 [330]

Answer:

1)

The total work done by outside force is $W_{o}=0.294J$

2)

The total work done by the electric field is $-W_{o} =-0.294J$

3)

The potential energy of the two sphere system is $PE = W_{o} = 0.294J$

4)

The magnitude of the acceleration of sphere A is $a_{A} = 66.868m/s^2$

5)

The magnitude of the acceleration of sphere B is $a_{B} = 26.747 \ m/s^2$

6)

The magnitude of velocity sphere A after a very long time is $v_{A} = 10.251 \ m/s$ \

7) The magnitude of velocity sphere B after a very long time is $v_{B} = 4.1 m/s$

Explanation:

The explanation is shown on the first and second uploaded image

4 0

3 years ago

1pt The process by which rock minerals are changed by natural processes into new substances is known as:

vagabundo [1.1K]

The answer is A because you have to have erosion

8 0

3 years ago

Two friends grab different sides of a textbook and pull with forces of 6.7 N to the east and 4.4 N to the west, respectively. Wh

elena-s [515]

Explanation:

This equation for acceleration can be used to calculate the acceleration of an object that is acted on by a net force. For example, Xander and his scooter have a total mass of 50 kilograms. Assume that the net force acting on Xander and the scooter is 25 Newtons. What is his acceleration? Substitute the relevant values into the equation for acceleration:

<h2>Answer:</h2>

a=Fm=25 N50 kg=0.5 Nkg

The Newton is the SI unit for force. It is defined as the force needed to cause a 1-kilogram mass to accelerate at 1 m/s2. Therefore, force can also be expressed in the unit kg • m/s2. This way of expressing force can be substituted for Newtons in Xander’s acceleration so the answer is expressed in the SI unit for acceleration, which is m/s2:

a=0.5 Nkg=0.5 kg⋅m/s2kg=0.5 m/s2

8 0

3 years ago

A box measures 4 m x 3 m x 2 m would it be easier to push the box if it were resting on a 3 m x 2 m side or on the 4 m x 3 m sid

ozzi

Answer:

465408754m468 iui m456m

4 0

3 years ago

A room that has an average ambient sound pressure level of 62 dBA and a maximum sound pressure level lasting more than a minute

cupoosta [38]

Answer:

Explanation:

A fire alarm notification appliance is an active fire protection component of a fire alarm system. The primary function of the notification appliance is to alert persons at risk.

If want the audible public mode signal to be hear clearly then, we need to have a sound level that is at least 15dB above the average ambient sound level or 5dB above the maximum sound level of at least 1minute

In this case the,

The average ambient sound level is 62dB,

And the maximum sound level is 68dB

Then, the public mode signal should be at least

1. 62dB+ 15dB=77dB

Or

2. 68dB +5dB =73dB.

Then the public mode signal hearing must be at least 77dB.

6 0

4 years ago