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sp2606 [1]
3 years ago
8

Everything is made up of blank and all matter is made of blank. There are three basic parts of atom: protons,neutrons, and blank

. The blank and blank are located in the center of the atom; this area is called the blank. The electrons are found orbiting around the nucleus in an area we call the blank. They are organized into levels within the electron cloud, and the outermost level is referred to as the blank level.
Physics
1 answer:
satela [25.4K]3 years ago
4 0
<h2>Everything is made up of blank and all matter is made of blank. There are three basic parts of atom: protons,neutrons, and blank. The blank and blank are located in the center of the atom; this area is called the blank. The electrons are found orbiting around the nucleus in an area we call the blank. They are organized into levels within the electron cloud, and the outermost level is referred to as the blank level.</h2>
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1. An electron (Q=16x10^-20 C, m=1x10^-30 kg) moving at half a megameter per second up the page enters a region with a uniform m
jek_recluse [69]

Explanation:

It is given that,

Charge on electron, q=16\times 10^{-20}\ C

Mass of the electron, m=9.1\times 10^{-31}\ kg  

Speed of the electron, v=0.5\ Mm/s=0.5\times 10^6\ m/s            

Magnetic field, B = 1 T (directed out of the page)

Let F is the magnetic force acting on the electron. It is given by :

F=qvB\ sin\theta

Here, \theta=90^{\circ}

F=qvB    

F=16\times 10^{-20}\ C\times 0.5\times 10^6\ m/s\times 1\ T  

F=8\times 10^{-14}\ N

Using the right hand rule, the direction of magnetic force is upward to the plane of the paper. Also, the electron will follow the circular path.  It is given by :

r=\dfrac{mv}{qB}

r=\dfrac{9.1\times 10^{-31}\ kg\times 0.5\times 10^6\ m/s}{16\times 10^{-20}\ C\times 1\ T}

r=2.84\times 10^{-6}\ m

Hence, this is the required solution.                                    

7 0
3 years ago
A horizontal force of 150 N is used to push a 40.0-kg packing crate a distance of 6.00 m on a rough horizontal surface. If the c
icang [17]

Answer:

a. 900 J

b. 0.383

Explanation:

According to the question, the given data is as follows

Horizontal force = 150 N

Packing crate = 40.0 kg

Distance = 6.00 m

Based on the above information

a. The work done by the 150-N force is

W = F x = \mu N x = \mu\ m\ g\ x

W = 150 \times 6

= 900 J

b. Now the coefficient of kinetic friction between the crate and surface is

\mu = \frac {F}{m\timesg}

= \frac{150}{40\times 9.8}

= .383

We simply applied the above formulas so that each one part could calculate

3 0
4 years ago
Which of the following is true about a combustion reaction?
Ksenya-84 [330]

Answer:

b

Explanation:

this is because inoder. for combustion or burning to take place oxygen must be available

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3 years ago
A shell is fired from the ground with an initial speed of 1.70x10^3 m/s at an initial angle of 55.0° to the horizontal, Neglectin
Ede4ka [16]

Answer:

range = 276.8 km, time = 142 s

Explanation:

4 0
3 years ago
Kerry Klutz drops her physics book off her aunt’s high rise balcony. It hits the ground below 1.5 s later. How high is the balco
Tamiku [17]
15 feet 1 for each foot
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