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
drek231 [11]
3 years ago
5

A rocket's acceleration is 6.0 m/s2. Assuming it starts at 0 m/s, how long will it take for the rocket to reach a velocity of 42

m/s?
250 s
0.14s
7.0 s
290 s
Physics
1 answer:
Over [174]3 years ago
4 0
There are few equations that link acceleration and velocity.

One of them is derived from the definition of acceleration - is the rate of change of velocity in respect with time

a = v-u/t
at=v-u

a = acceleration
v=velocity at the end
u=velocity at the start
t=time

Now put everything you know and solve for time.

6t = 42 -0
6t = 42
t = 42 / 6
t = 7 second

It takes 7 seconds for the roccet to reach a velocity of 42 m/s

Hope it helps :).

You might be interested in
Name the four major forces in the universe that act over long distance as I greater than the nucleus of an atom?
GalinKa [24]
Forces in the universe that act over long distance, meaning the distance is greater than the diameter of the nucleus of the atom are:

1. Electrostatic force or Coulomb force: Fc=(k*Q₁*Q₂)/r²,

2. Gravitational force: Fg=(G*m₁*m₂)/r²,

3. Magnetic force: Fm=qvB,

4. London dispersion force, also known as one of the van der Waals forces. 
4 0
3 years ago
The specific heat of iron is 0.45j/gk. The amount of heat needed to raise the temperature of the 12 g of iron by exactly 15k?
labwork [276]

Answer:

81 J.

Explanation:

From the question given above, the following data were obtained:

Specific heat capacity (C) = 0.45 J/gK.

Temperature change (ΔT) = 15 K

Mass = 12 g

Heat required (Q) =?

The heat required to raise the temperature of iron can be obtained as illustrated below:

Q = MCΔT

Q = 12 × 0.45 × 15

Q = 81 J

Therefore, the heat required to raise the temperature of the iron is 81 J.

8 0
3 years ago
The nonreflective coating on a camera lens with an index of refraction of 1.29 is designed to minimize the reflection of 634-nm
eimsori [14]

Answer:

minimum thickness of the coating = 122.868 nm

Explanation:

Given data

lens index of refraction = 1.29

wavelength = 634 nm

glass index of refraction = 1.53

to find out

minimum thickness of the coating

solution

we have given non reflective coating

so

we know that minimum thickness of the coating formula

minimum thickness of the coating = Wavelength / 4n

here n is coating index of refraction

so put here both value to get thickness

minimum thickness of the coating = Wavelength / 4n

minimum thickness of the coating = 634 / 4 ( 1.29 )

so minimum thickness of the coating = 122.868 nm

5 0
3 years ago
I need help please hurry ??!!!
jok3333 [9.3K]

Answer:

I would use the model of Ammonia because it helps you visualize the structure of NH3 better than the description. It would be easier to understand the structure of it if you can see it, rather than reading its description.

3 0
3 years ago
Why x ray is called an electromagnetic wave<br>​
Dahasolnce [82]
Because they behave just like all the electromagnetic waves of the spectrum. Same equations, just shorter wavelengths and more energy.

Hope you get it :)
7 0
2 years ago
Other questions:
  • Substance that does not contain any free ions and will not be an electrically conductive medium is what?
    12·2 answers
  • Calculate the final displacement from 0 if an object first moves 3 cm to the left and then 5 cm to the right.
    14·2 answers
  • how does the tilt of earths axis affect the number of daylight hours and the temperature of a location on earth ?
    12·1 answer
  • How do you convert 750ml to liters?
    8·1 answer
  • How far is the farthest man-made object from earth?
    15·1 answer
  • How high is the average telephone pole
    9·2 answers
  • a quantity of water is poured into a graduated cylinder, which reads 139 mL. what is the mass of the water in kilograms?​
    14·1 answer
  • What causes local winds to form
    7·2 answers
  • Calculate equivalent resistance in the following between points P and Q​
    12·2 answers
  • Hi im really confused:
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!