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
Mademuasel [1]
3 years ago
10

A positive charge of 8.0 × 10-4 C is in an electric field that exerts a force of 3.5 × 10-4 N on it. What is the strength of the

electric field?
Physics
1 answer:
Gennadij [26K]3 years ago
6 0

Answer:

E = 0.437 N/C

Explanation:

Given that,

Charge, q=8\times 10^{-4}\ C

Electric force, F=3.5\times 10^{-4}\ N

Let the strength of the electric field is E. We know that, the electric force is given by :

F = qE

Where

E is the electric field strength

E=\dfrac{F}{q}\\\\E=\dfrac{3.5\times 10^{-4}}{8\times 10^{-4}}\\E=0.437\ N/C

So, the strength of the electric field is equal to 0.437 N/C.

You might be interested in
The following currents are measured in the same direction in a three-branch parallel circuit: 250 mA, 300 mA, and 800 mA. What i
Ksju [112]

The current in the junction is 1350 mA or 1.350 A.

Explanation:

As per Kirchoff's first law, the algebraic sum of current meeting at any junction should be equal to the algebraic sum of current leaving the junction. As in the present case, three parallel branch circuit is given the current in 250 mA, 300 mA and 800 mA, respectively, the sum of these three current will be equal to the current in the junction.

So,

I₁+I₂+I₃ = I₄

So I₁,I₂ and I₃ are the current passed in the three parallel branches and I₄ is the current in the junction.

250 + 300 + 800 = 1350 mA

So the current in the junction is 1350 mA or 1.350 A.

5 0
3 years ago
Velocity and acceleration are both vectors; they have a direction. What is thedirection of the velocity and acceleration vectors
just olya [345]

Answer:

d. Both A & C

Explanation:

- The velocity of the ball is a vector, whose magnitude indicates its rate of change of position, and it has a direction. In this case, the ball is moving upward, therefore the direction of motion is upward, so the direction of the velocity is upward as well.

- The acceleration of the ball is a vector, whose magnitude indicates the rate of change of the velocity. The direction of the acceleration is:

-- positive if the the magnitude of the velocity is increasing

-- negative if the magnitude of the velocity is decreasing

For a ball thrown upward, the acceleration is given by the acceleration of gravity, g=9.8 m/s^2. This acceleration points downward, and it is constant during the entire motion. In particular, it does not change direction, as it is always directed downward. Therefore, the acceleration of the ball is downward.

So, the correct answer is

d.Both A & C

Since A and C are both true:

a.The velocity vector is directed upward.

c.The acceleration is directed downward.

3 0
3 years ago
Since rods are about 1000 times more sensitive than cones (at 470 nm), they should be able to detect smaller values of the elect
8090 [49]

Answer:

  a. Rods are about 1000 times more sensitive than cones.

Explanation:

The answer choice shown is a direct copy of the first line of the problem statement. It doesn't appear to be any more complicated than that. (It's a reading comprehension question.)

3 0
3 years ago
An 80-kg football player travels to the right at 8 m/s and a 120-kg player on the opposite team travels to the left at 4.0 m/s.
77julia77 [94]

Answer:

See Explanation

Explanation:

m1(v1) + m2(v2)

Opposite turns the plus to subtraction.

80(8) - 120(4.0)

60 - 480 = 160 kg m/s to the right

7 0
2 years ago
is a persons DNA likely to be more similar to the DNA of his biological parents or to the DNA of one of his first cousins
tangare [24]

It is more likely to be similar to his/her parents because the get half of their genetic code from their mom and half from their dad.

4 0
3 years ago
Read 2 more answers
Other questions:
  • (a) Find the size of the smallest detail observable in human tissue with 20.0-MHz ultrasound. (b) Is its effective penetration d
    15·1 answer
  • White light is composed of all the colors of the visible light spectrum. The spectrum is usually said to consist of
    15·2 answers
  • What is the average weight of a fully-grown heart?
    5·1 answer
  • Party hearing. As the number of people at a party increases, you must raise your voice for a listener to hear you against the ba
    14·1 answer
  • A uniform electric field is pointing in x direction. The magnitude of the electric field is 10 N/C. The filed makes an angle of
    8·1 answer
  • Two speakers are spaced 15 m apart and are both producing an identical sound wave. You are standing at a spot as pictured. What
    6·2 answers
  • 7. A box is being pushed from the left at 15N and pushed from the right at 10N,
    11·1 answer
  • How long will it take a sample of lead-212 (which has a half-life of 10.64 h) to decay to one-eighth its original strength?
    8·1 answer
  • Lec poid se mesure avec
    9·1 answer
  • 1. As the angle of the ramp is increased, the normal force increases /decreases / remains the same and the friction-force increa
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!