1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Alexeev081 [22]
3 years ago
7

A charged cloud system produces an electric field in the air near earth's surface. a particle of charge -2.0 × 10-9 c is acted o

n by a downward electrostatic force of 4.3 × 10-6 n when placed in this field. (a) what is the magnitude of the electric field? (b) what is the magnitude of the electrostatic force on a proton placed in this field? (c) what is the gravitational force on the proton? (d) what is the ratio of the electrostatic force to the gravitational force in this case?
Physics
1 answer:
defon3 years ago
7 0

Part a)

Magnitude of electric field is given by force per unit charge

E = \frac{F}{q}

E = \frac{4.3 * 10^{-6}}{2 * 10^{-9}}

E = 2150 N/C

Part b)

Electrostatic force on the proton is given as

F = qE

F = 1.6 * 10^{-19} * 2150

F = 3.44 * 10^{-16} N

PART C)

Gravitational force is given by

F_g = mg

F_g = 1.6 * 10^{-27}*9.8

F_g = 1.57 * 10^{-26} N

PART d)

Ratio of electric force to weight

\frac{F_e}{F_g} = \frac{3.44 * 10^{-16}}{1.57*10^{-26}}

\frac{F_e}{F_g} = 2.2 * 10^{10}

You might be interested in
Please help :( A ray of laser light strikes a glass surface at an angle θa = 22.5° to the normal. What is the angle θb of the re
pshichka [43]

Answer:

Explanation:

We shall apply law of refraction which is as follows

sin i / sinr = μ  , where i is angle of incidence , r is angle of refraction and μ is refractive index

here i = θa = 22.5°

r = θb

μ  = 1.77

sin22.5 / sinθb = 1.77

.3826 / sinθb = 1.77

sinθb = .216

θb  = 12.5 °.

4 0
3 years ago
A student performs this experiment and measures the bar to have a mass of 150g and length of 36cm. What is the moment of inertia
Ugo [173]

Answer:

The moment of inertia of the bar is 45\times10^{-4}\ kg-m^2

Explanation:

Given that,

mass of bar = 150 g

Length l = 36 cm

We need to calculate the moment of inertia of the bar

Using formula of moment inertia

I=\dfrac{1}{12}Ml^2

Where,

M = mass of the bar

L = length of the bar

Put the value into the formula

I=\dfrac{1}{12}\times150\times10^-3\times36\times10^{-2}

I=45\times10^{-4}\ kg-m^2

Hence, The moment of inertia of the bar is 45\times10^{-4}\ kg-m^2

4 0
3 years ago
Where could you most likely observe a volcano?
Leni [432]
I'm thinking the answer is going to b B
8 0
3 years ago
Rodney is trying out one of Santa's new games that consists of three pieces that blow apart if the wrong key is inserted into th
ch4aika [34]

Answer:

<em>The third piece moves at 6.36 m/s at an angle of 65° below the horizon</em>

Explanation:

Linear Momentum

It's a physical magnitude that measures the product of the velocity by the mass of a moving object. In a system where no external forces are acting, the total momentum remains unchanged regardless of the interactions between the objects in the system.

If the velocity of an object of mass m is \vec v, the linear momentum is computed by

\displaystyle \vec{P}=m.\vec{v}

a)

The momentum of the board before the explosion is

\displaystyle \vec{P}_{t1}=m_t\ \vec{v}_o

Since the board was initially at rest

\displaystyle \vec{P}_{t1}=

After the explosion, 3 pieces are propelled in different directions and velocities, and the total momentum is

\displaystyle \vec{P}_{t2}=m_1\ \vec{v}_1\ +\ m_2\ \vec{v}_2+m_3\ \vec{v}_3

The first piece of 2 kg moves at 10 m/s in a 60° direction

\displaystyle \vec{v}_1=(10\ m/s,60^o)

We find the components of that velocity

\displaystyle \vec{v}_1=

\displaystyle \vec{v}_1=m/s

The second piece of 1.2 kg goes at 15 m/s in a 180° direction

\displaystyle \vec{v}_2=(15,180^o)

Its components are computed

\displaystyle \vec{v}_2=(15\ cos180^o,15\ sin180^o)

\displaystyle \vec{v}_2=(-15,0)\ m/s

The total momentum becomes

\displaystyle P_{t2}=2+1.2+m_3\ \vec{v}_3

Operating

\displaystyle P_{t2}=++m_3\ \vec{v}_3

Knowing the total momentum equals the initial momentum

\displaystyle P_{t2}=+m_3\ \vec{v}_3=0

Rearranging

\displaystyle m_3\ \vec{v}_3=

Calculating

\displaystyle m_3\ \vec{v}_3=

This is the momentum of the third piece

b)

From the above equation, we solve for \vec v_3:

\displaystyle \vec{v}_3=\frac{1}{3}

\displaystyle \vec{v}_3=m/s

The magnitude of the velocity is

\displaystyle \vec{v}_3|=\sqrt{2.67^2+(-5.77)^2}=6.36

And the angle is

\displaystyle tan\theta =\frac{-5.77}{2.67}=-2.161

\displaystyle \theta =-65.17^o

The third piece moves at 6.36 m/s at an angle of 65° below the horizon

5 0
3 years ago
A patricle is accelerated uniformly from rest, so that after 10 seconds it has a speed of 15m/s find its acceleration and the di
grin007 [14]

Answer:

Its acceleration is 1.5 \frac{m}{s^{2} } and the distance it has covered is 150 m.

Explanation:

Acceleration is a quantity that indicates the variation in speed of a moving body as time passes. That is, acceleration relates changes in velocity with the time in which they occur.

The average acceleration is defined as the relationship between the variation or change in the speed of a mobile and the time used in said change:

acceleration=\frac{change in speed}{time}

In this case:

  • change in speed= final speed - initial speed= 15 m/s - 0 m/s= 15 m/s
  • time= 10 s

Replacing:

acceleration=\frac{15 \frac{m}{s} }{10 s}

and solving you get:

<u><em>acceleration= 1.5 </em></u>\frac{m}{s^{2} }<u><em></em></u>

Speed ​​is a quantity that expresses the relationship between the space traveled by an object and the time used for it. This is:

speed=\frac{distance}{time}

So the distance can be calculated as:

distance= speed* time

In this case:

  • speed= 15 m/s
  • time= 10 s

Replacing:

distance= 15 m/s* 10 s

and solving you get:

<u><em>distance= 150 m</em></u>

<u><em>Its acceleration is 1.5 </em></u>\frac{m}{s^{2} }<u><em> and the distance it has covered is 150 m.</em></u>

8 0
3 years ago
Other questions:
  • 4: Which of the following is true of an object in a circular motion at a constant speed?
    6·1 answer
  • Why just indirect evidence be used to study the structure of atoms?
    14·1 answer
  • A person travels by car from one city to another with different constant speeds between pairs of cities. She drives for 35.0 min
    9·1 answer
  • A 1.3 kgkg block slides along a frictionless surface at 1.3 m/sm/s . A second block, sliding at a faster 5.0 m/sm/s , collides w
    9·2 answers
  • A toy train is pushed forward and released at Xi = 4.0 m with a speed of 2.5 m/s. It rolls at a steady speed for 2.0 s, then one
    11·2 answers
  • Which option below describes the main difference between analog and digital technology?
    7·1 answer
  • You warm your self besides a fire that you built on the beach...
    13·1 answer
  • Morning friends!!<br><br><br> hope y'all have a good day!
    14·1 answer
  • A car travels from rest to 85 m/s and covers 150 meters. How LONG did<br> that take? *
    7·1 answer
  • What provides The energy needed to fill the water cycle
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!