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
saul85 [17]
3 years ago
14

How many unique values of x solve x2 + 4x + 4 = 0?

Physics
1 answer:
hjlf3 years ago
8 0
Factor it.

( x+2)(x+2) = 0

x = -2

there is only one unique value of x
You might be interested in
If the frequencies of two component waves are 24 Hz and 20 Hz, they should produce _______ beats
nekit [7.7K]

Your answer should be 4Hz

8 0
3 years ago
In a double-slit experiment, light from two monochromatic light sources passes through the same double slit. The light from the
Dmitrij [34]

Answer:

\lambda_2 = 573.3 nm

Explanation:

As we know that the position of maximum intensity on the screen is given as

y = \frac{N\lambda L}{d}

here we know that

\lambda = wavelength

L = distance of the screen

d = distance between two slits

now we know that the position of 8th maximum intensity is same as that of 9th maximum on the screen

so we have

\frac{N_1\lambda_1 L}{d} = \frac{N_2 \lambda_2 L}{d}

so here we have

8 (645 nm) = 9 \lambda_2

\lambda_2 = 573.3 nm

4 0
3 years ago
Adaptive radiation is demonstrated by ____
Vlad1618 [11]

X-rays are high energy electrons that can cause damage when exposed under extreme conditions. The best technology that can block it is using a lightweight type of metal foam. It can take in high energy collisions which also exhibits high forces. it does not only block x-rays but also, neutron radiation and gamma rays.

7 0
3 years ago
Pls help me quickly ......​
marishachu [46]

Answer:

the last one: weight force

3 0
3 years ago
Calculate the gravitational potential energy of a 1200 kg car at the top of a hill that is 42 m high.
GalinKa [24]
It IS <span>PE = (1200 kg)(9.8 m/s²)(42 m) = 493,920 J </span>
6 0
3 years ago
Other questions:
  • Suppose a single light bulb burns out. How do you think this will affect lights that are strung
    13·2 answers
  • 1.9 km converted to miles
    7·1 answer
  • Running longer would be an example of how you might improve your running performance
    14·1 answer
  • A small rock is thrown vertically upward with a speed of 22.0 m/s from the edge of the roof of a 30.0-m-tall building. The rock
    8·1 answer
  • A mass of 0.5 kg hangs motionless from a vertical spring whose length is 1.10 m and whose unstretched length is 0.50 m. Next the
    7·2 answers
  • 14 kilometers per hour to meters per second
    14·1 answer
  • A car is moving north at 5.2 m/s2. Which type of motion do the SI units in this<br> value express?
    14·1 answer
  • What happens to the work done when a force is doubled and the distance moved remain the same?​
    9·1 answer
  • Define relative velocity with an example. A man is going
    15·1 answer
  • An 80 N bowling ball has an apparent weight of 60 N when completely submerged in water. What is the average density of the bowli
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!