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vova2212 [387]
3 years ago
6

In which direction does a bag at rest move when a force of 20 newtons is applied from the right?

Physics
1 answer:
worty [1.4K]3 years ago
8 0

Answer:

in the direction of the applied force

Explanation:

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A small object of mass 3.82 g and charge -16.5 µC is suspended motionless above the ground when immersed in a uniform electric f
horrorfan [7]

Answer:

2271.16N/C  upward

Explanation:

The diagram well illustrate all the forces acting on the mass. The weight is acting downward and the force is acting upward in other to balance the weight.since the question says it is motionless, then indeed the forces are balanced.

First we determine the downward weight using

W=mg\\g=9.81m/s^{2}

Hence for a mass of 3.82g 0r 0.00382kg we have the weight to be

W=0.00382kg*9.81m/s^{2}

W=0.0375N

To calculate the electric field,

E=f/q\\E=0.0375/16.5*10^{-6} \\E=2271.16N/C

Since the charge on the mass is negative, in order to generate upward force, there must be a like charge below it that is  repelling it, Hebce we can conclude that the electric field lines are upward.

Hence the magnitude of the electric force is 2271.16N/C and the direction is upward

4 0
3 years ago
Psychological profiling is also known as criminal profiling. True or False?
Nikolay [14]
So my opinion that is false bc. the psychological profiling not is necessary being as criminal profiling ,the criminal mean a greater,intensive word in the way of ,,killer" ,when the ,,psychological" profile is total different way 

hope helped 
8 0
3 years ago
Read 2 more answers
A ____________ is a machine which contains a lever and a wedge that combine to make work easier.
Katarina [22]

Answer: Simple machine

  • The movable inclined plane is called wedge.
  • A simple machine is a machine, which contains lever and wedge, is used to push the things apart.  
  • The mechanical advantage of a wedge is given by the ratio of length of its slope to its width.
3 0
3 years ago
The graph below shows the velocity of a car over time.
jekas [21]

Answer:

D. Calculate the area under the graph.

Explanation:

The distance made during a particular period of time is calculated as (distance in m) = (velocity in m/s) * (time in s)

You can think of such a calculation as determining the area of a rectangle whose sides are velocity and time period. If you make the time period very very small, the rectangle will become a narrow "bar" - a bar with height determined by the average velocity during that corresponding short period of time. The area is, again, the distance made during that time. Now, you can cover the entire area under the curve using such narrow bars. Their areas adds up, approximately, to the total distance made over the entire span of motion. From this you can already see why the answer D is the correct one.

Going even further, one can make the rectangular bars arbitrarily narrow and cover the area under the curve with more and more of these. In fact, in the limit, this is something called a Riemann sum and leads to the definition of the Riemann integral. Using calculus, the area under a curve (hence the distance in this case) can be calculated precisely, under certain existence criteria.

3 0
3 years ago
Read 2 more answers
Which of the following are properties of mechanical waves?
yuradex [85]

The properties of mechanical waves are : ( C and D )

  • The three categories of mechanical waves are transverse, longitudinal,surface waves ( C )
  • Waves transport energy,but not matter ( D )

<h3>What are mechanical waves ?</h3>

Mechanical waves are a category of waves which cannot transmit energy through a vacuum, i.e. they require a medium to transmit their energy from one end to another. An example of a mechanical wave is : sound wave. Mechanical waves are grouped into transverse, longitudinal and surface waves.

Hence we can conclude that The properties of mechanical waves are : The three categories of mechanical waves are transverse, longitudinal,surface waves and Waves transport energy,but not matter

Learn more about mechanical waves : brainly.com/question/26116832

#SPJ1

6 0
1 year ago
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