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
Ludmilka [50]
2 years ago
7

Please help me!!!!!!!!!!!!!!!​

Physics
1 answer:
qaws [65]2 years ago
3 0

Answer:

3

Explanation:

i did it

You might be interested in
One timing problem in using fiscal policy to counter a recession is the "legislative lag" that occurs between the
natta225 [31]

<span>One timing problem in using fiscal policy to counter a recession is called the “legislative lag” it occurs between the time the time the need for fiscal action is recognized and between the time that it is taken in action.</span>

4 0
3 years ago
Which of the following is true about light waves and sound waves? A. Sound waves can move at different speeds, but light waves a
vivado [14]

Answer:

C

Explanation:

Sound waves speed up noticeably when moving through a solid or liquid, because all it is is just particles colliding; and particles are way closer together with those states of matter.

The speed of light can change when moving through different substances, but this is dependent on complicated factors such as frequency, polarization, intensity, et. cetera

The important part is that it does change speed, so your answer is C.

Hope this helps!

3 0
3 years ago
You step onto a hot beach with your bare feet. A nerve impulse, generated in your foot, travels through your nervous system at a
Masteriza [31]

Answer:

Explanation:

Speed = distance / time

Given speed = 127 m/s .

distance = 1.58 m

time = ?

Putting the values in the formula

127 m/s = 1.58 m / time

time = 1.58 / 127 s

= 12.44 ms .

8 0
3 years ago
The mass of 29000 N elevator is
Lana71 [14]

<span>In this case we are given a force of 29,000 N. We know that the equation we  can use is:</span>

Force = mass * acceleration

 

However this is not just any type of force, because this is the weight of the elevator. So when the force is equal to weight, the acceleration acting is simply gravity. Therefore:

 

weight = mass * gravity

 

Calculating for mass:

mass = 29,000 N / (9.8 m/s^2)

<span>mass = 2,959.18 kg</span>

5 0
3 years ago
Equipotentials are lines along which Select one: a. the electric field is constant in magnitude and direction. b. the electric c
soldi70 [24.7K]

Answer:

option D is correct

Explanation:

It is important to note that equipotential lines are always perpendicular to electric field lines. No work is required to move a charge along an equipotential, since ΔV = 0. Thus the work is :

                                W = −ΔPE = −qΔV = 0.

Work is zero if force is perpendicular to motion. Force is in the same direction as E, so that motion along an equipotential must be perpendicular to E. More precisely, work is related to the electric field by:

                                 W = Fd cos θ = qEd cos θ = 0.

- The change in kinetic energy Δ K.E by conservation should be:

                                 Δ K.E = W

Since, W = 0:

                                Δ K.E = 0

- If change in kinetic energy is zero it means that charge moves at a constant speed. Hence, option D is correct.

4 0
3 years ago
Other questions:
  • We intend to observe two distant equal brightness stars whose angular separation is 50.0 × 10-7 rad. Assuming a mean wavelength
    12·2 answers
  • A centripetal force of 1,400 newtons acts on a car rounding a curve with a radius of 150 meters. If the car has a mass of 2,100
    11·1 answer
  • Which of these would be the best definition of energy?
    8·2 answers
  • A distant planet with a mass of (7.2000x10^26) has a moon with a mass of (5.0000x10^23). The distance between the planet and the
    15·1 answer
  • Explain how an iron needle can become magnetized...
    12·1 answer
  • Question 2 help me and i'll give u brainlest
    6·1 answer
  • Which of the following is true regarding mixtures? a. One substance not combined with any other substances. b. Two or more subst
    15·1 answer
  • V02 Zone 90-100% MHR; =BPM
    8·1 answer
  • How do magnet effect materials that are not magnets
    9·1 answer
  • How many atoms are present in 2 moles of chromium?
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!