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
ololo11 [35]
3 years ago
6

About 30 % of earth’s water found In

Physics
1 answer:
Illusion [34]3 years ago
6 0

Answer:

30 percent is found in ground water.

You might be interested in
If a car has a mass of 200 kilograms and produces a force of 500 N, how fast will the car accelerate?
san4es73 [151]

Answer:

B

Explanation:

F = ma

500N = 200 × a

200a. = 500N

a. =. 500N/200

a. =. 2.5m/s²

PLEASE GIVE BRAINLIEST.

3 0
2 years ago
Will give brainliest! how does an engineer use physical science?
pentagon [3]

Answer: gravity, circuits

Explanation:

3 0
3 years ago
Two sinusoidal waves are moving through a medium in the positive x-direction, both having amplitudes of 7.00 cm, a wave number o
lys-0071 [83]

Answer:

0.99 m

Explanation:

Parameters given:

Amplitude, A = 7.00cm

Wave number, k = 3.00m^-1

Angular Frequency, ω = 2.50Hz

Period = 6.00 s

Phase, ϕ = π/12 rad

Note: All parameters are the same for both waves except the phase.

Wave 1 has a wave function:

y1(x, t) = Asin(kx - ωt)

y1(x, t) = 7sin(3x - 2.5t)

Wave 2 has a wave function:

y2(x, t) = Asin(kx - ωt + ϕ)

y2(x, t) = 7sin(3x - 2.5t + π/12)

π is in radians.

When Superposition occurs, the new wave is represented by:

y(x, t) = 7sin(3x - 2.5t) + 7sin(3x - 2.5t + π/12)

y(x, t) = 7[sin(3x - 2.5t) + sin(3x - 2.5t + π/12)]

Using trigonometric function:

sin(a) + sin(b) = 2cos[(a - b)/2]sin[(a + b)/2]

Where a = 3x - 2.5t, b = 3x - 2.5t + π/12

We have that:

y(x, t) = (2*7)[cos(π/24)sin(3x - 2.5t + π/24)]

Therefore, when x = 0.53cm and t = 2s,

y(x, t) = (2*7)[cos(π/24)sin{(3*0.53) - (2.5*2)+ π/24}]

y(x, t) = 14 * 0.9914 * 0.0713

y(x, t) = 0.99 m

The height of the resultant wave is 0.99cm

5 0
3 years ago
What happens to the coefficient of friction when the weight is increased? Why is this?
Crazy boy [7]

Answer:

Usually the coefficient of friction remains unchanged

Explanation:

The coefficient of friction should in the majority of cases, remain constant no matter what your normal force is. When you apply a greater normal force, the frictional force increases, and your coefficient of friction stays the same. Here's another way to think about it: because the force of friction is equal to the normal force times the coefficient of friction, friction is increased when normal force is increased.

Plus, the coefficient of friction is a property of the materials being "rubbed", and this property usually does not depend on the normal force.

6 0
3 years ago
Read 2 more answers
Let x define the position of an object such that x =
timama [110]
See the attached picture for answers

7 0
2 years ago
Other questions:
  • Two transverse waves travel along the same taut string inopposite directions. the waves are described by following equations use
    7·1 answer
  • Which choice below shows the order of degrees from least specialized to most specialized? Select the best answer choice.
    13·2 answers
  • Find the magnitude of the gravitational force a 68.4 kg person would experience while standing on the surface of earth with a ma
    9·1 answer
  • Which property of potential energy distinguishes it from kinetic energy?
    7·2 answers
  • V
    5·1 answer
  • An astronaut drops a hammer from 2.0 meters above the surface of the Moon. If the acceleration due to gravity on the Moon is 1.6
    11·1 answer
  • Look at the divisions between 2 and 4. What level of precision does this stopwatch have based on the divisions marked on its fac
    8·1 answer
  • An 8.30 kg crate is pushed with a 17.7 N force. How fast does it accelerate?
    14·2 answers
  • An electromagnet is created using a battery, an insulated copper wire and an iron nail. The wire is wrapped around the nail 30 t
    8·1 answer
  • What angle (in degrees) is needed between the direction of polarized light and the axis of a polarizing filter to cut its intens
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!