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
iVinArrow [24]
2 years ago
9

Answer this plsss A mobile phone operates at 900 MHz. What wavelength does it use?

Physics
1 answer:
Aleks [24]2 years ago
7 0

Answer:

The wavelength = 0.3333 meters at 900 MHz, therefore, = /4 = 0.08333 meters.

You might be interested in
Why might political parties prefer closed primaries to open primaries
sweet [91]

In a closed primary, only voters registered with a given party can vote in that party's primary.

5 0
3 years ago
What is one major difference between federal and unitary governments
nikklg [1K]

Answer:

In a unit government, all the powers of government are moved around in the central government where in turn in a federal government, the powers of government are divided between the center and the units.

Explanation:

I hope this helps.

5 0
1 year ago
Two stationary positive point charges, charge 1 of magnitude 3.90 nC and charge 2 of magnitude 1.80 nC, are separated by a dista
soldi70 [24.7K]

Answer:

v = 7793150 m/s

Explanation:

First, we are going to calculate the electrical potential in the point middle between the two charges

Remember that the electrical potential can be calculated as:

v = \frac{kQ}{r}

                 Where     k = 8.9874 x 10^{9} \frac{Nm^{2} }{C^{2} }

and it is satisfy the superposition principle, thus

v = \frac{8.9874x10^{9}(3.90x10^{-9} ) }{0.23} +  \frac{8.9874x10^{9}(1.80x10^{-9} ) }{0.23}

v = 222.73v

The electrical potential at 10 cm from charge 1 is:

v = \frac{8.9874x10^{9}(3.90x10^{-9} ) }{0.1} +  \frac{8.9874x10^{9}(1.80x10^{-9} ) }{0.36}

v = 395.44 v

Since the work - energy theorem, we have:

q\Delta v = \frac{mv^{2} }{2}

                     where q is the electron's charge and m is the electron's mass

Therefore:

v = \sqrt{\frac{2q\Delta v}{m} }

v = 7793150 m/s

6 0
3 years ago
If the mass of a material is 115 grams and the volume of the material is 16 cm3, what would the density of the material be?
hjlf
Well, density is mass/volume. So what's 115 g / 16 cm3? That'll get you your density. Remember that density will be in g/cm3! 
6 0
3 years ago
What action involves a chemical change?
Likurg_2 [28]
<span>BAKING A CAKE </span>

Chemical change is a process where a current substance changes or is made into a new type of substance
. Unlike the physical change, which is reversible. Chemical change stays into a its new form. Take for instance these -physical change- examples, making ice cubes. The process involves solidification or freezing where the water becomes ice or solid but when it melts back to its original or typical form with respect to temperature, it’s still water. When the paper is cut into pieces it isn’t burned or exposed to a stimuli that can trigger immediate change in its composition. It’s still the same. On the contrary, baking a cake involves these different compositions or substances –flour, egg, yeast and etc. that is baked to a cake, a newly formed unified substance of all the included ingredients.      



5 0
3 years ago
Other questions:
  • Most photographs will be made using a shutter speed of 1/60 or faster.
    7·2 answers
  • All of the celestial bodies of the solar system were said to have formed from -a nebular cloud of dust and gas -the protostar -d
    5·2 answers
  • In the great shopping cart race, two students push on shopping carts. A having twice the mass of B, with the same force applied
    15·1 answer
  • Suppose you look at a spectrum of visible light by looking through a prism or diffraction grating. How can you decide whether it
    15·1 answer
  • The water behind Grand Coulee Dam is 1000 m wide and 200 m deep. Find the hydrostatic force on the back of the dam. (Hint: the t
    10·1 answer
  • As you increase current, what happens to the strength of an electromagnet?
    9·1 answer
  • Find the force, in Newtons, on a rectangular metal plate with dimensions of 4 m by 8 m that is submerged horizontally in 9 m of
    6·1 answer
  • Introduction for Home economics project​
    12·2 answers
  • I forgot this someone help
    13·1 answer
  • What is the net force needed to accelerate a 21.4 kg grocery sack upward at 1.5 m/s2?
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!