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
morpeh [17]
3 years ago
15

PLEASE HELP URGENT: Please see attachment for problem! AP physics projectile question. I'd REALLY appreciate any help.

Physics
1 answer:
kiruha [24]3 years ago
4 0
I’m so sorry, I need more information. Good luck and I’m sorry I couldn’t help you :(
You might be interested in
The bending of light as it passes from one medium to the next is
S_A_V [24]
This is called refraction. Some common examples of refraction are a straw appearing bent or cut once it enters water in a glass.
5 0
3 years ago
When a hurricane nears land what causes the most damage
amid [387]
A storm surge which is when the winds of the hurricane pull water levels up and cause floods inland
4 0
3 years ago
What is one way to model gravity and magnetism
Oxana [17]

Answer:

Gravity and magnetism are not the same thing. In fact, they are completely separate forces. Gravity is a force that acts between any two objects with mass. ... Magnetism can either pull the two objects together or push them apart, depending on which way the magnets point.

Explanation:

6 0
3 years ago
Read 2 more answers
7.22 Ignoring reflection at the air–water boundary, if the amplitude of a 1 GHz incident wave in air is 20 V/m at the water surf
Serga [27]

Answer:

z = 0.8 (approx)

Explanation:

given,

Amplitude of 1 GHz incident wave in air = 20 V/m

Water has,

μr = 1

at 1 GHz, r = 80 and σ = 1 S/m.

depth of water when amplitude is down to  1 μV/m

Intrinsic impedance of air = 120 π  Ω

Intrinsic impedance of  water = \dfrac{120\pi}{\epsilon_r}

Using equation to solve the problem

  E(z) = E_0 e^{-\alpha\ z}

E(z) is the amplitude under water at z depth

E_o is the amplitude of wave on the surface of water

z is the depth under water

\alpha = \dfrac{\sigma}{2}\sqrt{\dfrac{(120\pi)^2}{\Epsilon_r}}

\alpha = \dfrac{1}{2}\sqrt{\dfrac{(120\pi)^2}{80}}

\alpha =21.07\ Np/m

now ,

  1 \times 10^{-6} = 20 e^{-21.07\times z}

  e^{21.07\times z}= 20\times 10^{6}

taking ln both side

21.07 x z = 16.81

z = 0.797

z = 0.8 (approx)

5 0
3 years ago
A 1500 kg car skids to a halt on a wet road where μk = 0.47. You may want to review (Pages 141 - 145) . Part A How fast was the
shusha [124]

The car travels at a speed of 25m/s.

<u>Explanation:</u>

Given-

Mass, m = 1500kg

Coefficient of friction, μk = 0.47

Distance, x = 68m

Speed, s = ?

We know,

Force, F = ma

and

F = μ X m X g

Therefore,

μ * m * g = m * a

μ * g = a

Let, g = 9.8m/s²

So,

a = 0.47 * 9.8 m/s^2

a = 4.606m/s^2

We know,

v^2 - u^2 = 2as

where, v is the final velocity

           u is the initial velocity

           a is the acceleration

           s is the distance

If the car comes to rest, the final velocity, v becomes 0.

So,

u^2 = 2 * 4.606 * 68\\\\u^2 = 626.416m/s\\\\u = 25m/s

The car travels at a speed of 25m/s.

6 0
3 years ago
Other questions:
  • 2. What unit of the metric systems would I use if I wanted to weigh my bananas ?
    11·1 answer
  • Which characteristic of the planets in our solar system increases as the distance from the sun increase?
    8·1 answer
  • Which of the following terms describes the primary core of a comet?
    9·1 answer
  • A basketball player throws a chall -1 kg up with an initial speed of his hand at shoulder height = 2.15 m Le gravitational poten
    11·1 answer
  • When it reaches an altitude of 3600 m, where the temperature is 5.0∘C and the pressure only 0.68 atm, how will its volume compar
    9·1 answer
  • How does work done on an object affect its kinetic energy
    9·1 answer
  • Suppose that the voltage across the resistor is held constant at 40 volts. If the resistance is steadily decreasing at a rate of
    14·1 answer
  • Ke...
    10·1 answer
  • SCIENCE
    6·2 answers
  • An object attached to an ideal spring executes simple harmonic motion. If you want to double its total energy, you could An obje
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!