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
Masteriza [31]
3 years ago
6

Opposite electric charges will repel, and like charges will attract.

Physics
1 answer:
DochEvi [55]3 years ago
5 0
As it stands now, that statement is false.

There are two ways to make the statement true:

#1).  Exchange the places of the words "Opposite" and "like".

#2).  Exchange the places of the words "repel" and "attract".

Either ONE of these changes will make the statement true.
Doing BOTH of these changes will leave it false.
You might be interested in
The closest approach distance between Mars and Earth is about 56 million km. Assume you can travel in a spaceship at 58,000 km/h
vladimir1956 [14]

Answer:

40.22 days

Explanation:

Given data:

Closest approach distance between Mars and Earth = 56 million km = 56 × 10⁶ km

Speed of the spaceship = 58000 km/h

Now, the time (t) is calculated as:

time = Distance / speed

on substituting the values, we get

t = 56 × 10⁶ km / (58000 km/h)

or

t = 965.517 hours

or

t = 965.517 / 24 days = 40.22 days

6 0
3 years ago
A sail boat moves north for a distance of 10 km when blown by a wind 30° east of south with the force of 5.00×10^4 N. how much w
erma4kov [3.2K]
<h3><u>Answer;</u></h3>

a) 5.00 x 10^8 J

<h3><u>Explanation;</u></h3>

The work done to move the sailboat is calculated through the equation;

W = F x d

where F is force and d is the distance.

Substituting the known values from the given above,

                             W = (5.00 x 10⁴ N)(10 km)(1000 m/ 1km)

                                 = 5.00 x 10⁸ J

Thus, the work done is <u>5.00 x 10⁸Joules</u>

7 0
3 years ago
Liz rushes down onto a subway platform to find her train already departing. she stops and watches the cars go by. each car is 8.
Snezhnost [94]

 

The average velocity can be calculated using the formula:

v = d / t

For the 1st car, the velocity is calculated as:

v1 = 8.60 m / 1.80 s = 4.78 m / s

While that of the 2nd car is:

v2 = 8.60 m / 1.66 s = 5.18 m / s

 

Now we can solve for the acceleration using the formula:

v2^2 = v1^2 + 2 a d

Rewriting in terms of a:

a = (v2^2 – v1^2) / 2 d

a = (5.18^2 – 4.78^2) / (2 * 8.6)

a = 0.23 m/s

 

Therefore the train has a constant acceleration of about 0.23 meters per second.

5 0
3 years ago
What quantity does the Hamiltonian correspond to? Rest mass Potential energy Total energy Kinetic energy Bohr frequency Lagrangi
PSYCHO15rus [73]

Answer:

The correct option is: Total energy

Explanation:

The Hamiltonian operator, in quantum mechanics, is an operator that is associated with the<u> total energy of the system.</u> It is equal to the sum of the total kinetic energy and the potential energy of all the particles of the system.

The Hamiltonian operator was named after the Irish mathematician, William Rowan Hamiltonis denoted and is denoted by H.

3 0
3 years ago
HELP ME PLEASE I NEED IT NOW
tia_tia [17]

Answer:

the angle of incident is 40°

Explanation:

NQ is the normal to the mirror, therefore

angle NQA =90°

PQA = 50°

incident angle = NQA - PQA

90°- 50° = 40°

note that the angle of reflection is equal to the angle of incident

8 0
3 years ago
Other questions:
  • A 2,000 kg rocket is launched 12 km straight up at a constant acceleration into the sky at which point the rocket is travelling
    9·1 answer
  • In order for a reaction to begin, what is required?
    5·2 answers
  • If you are measuring how far a ball traveled in an experiment which example below could be an
    9·1 answer
  • HEY CAN ANYONE PLS ASNWER DIS!!!!!!!
    11·1 answer
  • 4. A cylindrical tube has a length of 14.4cm and a radius of 1.5cm and is filled with a colorless gas. If the density of the gas
    12·1 answer
  • The eggs of reptiles are fertilized _____.
    15·2 answers
  • The internal energy of a system is always increased by __________. a adding heat to the system and having the system do work on
    11·1 answer
  • Which type of light bulb uses phosphors?
    7·1 answer
  • . In a wave, …………………… is carried from one place to another.
    10·1 answer
  • 3. A 1500 kg car moving at 30 m/s strikes a 6000 kg van initially at rest. If the car
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!