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
kirza4 [7]
3 years ago
8

A student will study german at last 3 years

Physics
1 answer:
Colt1911 [192]3 years ago
5 0

Answer:

i don't understand

Explanation:

You might be interested in
A bowler throws a ball down the lane toward the pins. The ball reaches the pins and slowly moves through them, knocking down the
Iteru [2.4K]

Answer:

First one

Explanation:

Maybe because example if a ball that has less mass bounces higher than the one w/more , then a bowling ball should be able with more force.

hope that helped:/

6 0
3 years ago
Tyler has learned that potential energy is energy stored. Tyler's teacher asks the students to come up with a demonstration of p
Advocard [28]
D.A child at the top of a slide
7 0
3 years ago
Read 2 more answers
Why has the atomic model changed over time
inysia [295]
                                   

The first model of the atom was developed by JJ Thomson in 1904, who thought that atoms were composed purely of negatively charged electrons. This model was known as the 'plum pudding' model.

This theory was then disproved by Ernest Rutherford and the gold foil experiment in 1911, where Rutherford shot alpha particles at gold foil, and noticed that some went through and some bounced back, implying the existence of a positive nucleus.

In 1913, Niels Bohr proposed a model of the atom where the electrons were contained within quantized shells that orbited the nucleus. This was because it was impossible for the cloud of negative electrons proposed by Rutherford to exist, as the negative electrons would be drawn to the positive nucleus, and the atom would collapse in on itself.

In 1926, the Austrian physicist Erwin Schrödinger created a quantum mechanical model of the atom by combining the equations for the behavior of waves with the de Broglie equation to generate a mathematical model for the distribution of electrons in an atom.

However the model used today is closest to the Bohr model of the atom, using the quantized shells to contain the electrons.

For more info:

http://chemistry.about.com/od/chemistryglossary/a/debroglieeqdef.htm

7 0
3 years ago
The two vectors and in fig. 3-28 have equal magnitudes of 10.0 m and the angles are 30° and 105°. find the (a) x and (b) y compo
mylen [45]

You can just use basic trigonometry to solve for the x & y components.

<span>vector a = 10cos(30) i + 10sin(30) j = <5sqrt(3), 5></span>

vector b is only slightly harder because the angle is relative to vector a, and not the positive x-axis. Anyway, this just makes vector b with an angle of 135deg to the positive x-axis.

<span>vector b = 10cos(135) i + 10sin(135) j = <-5sqrt(2), 5sqrt(2)></span>

So now we can do the questions:

r = a + b

r = <5sqrt(3)-5sqrt(2), 5+5sqrt(2)>

(a) 5sqrt(3)-5sqrt(2)

(b) 5+5sqrt(2)

(c)

|r| = sqrt( (5sqrt(3)-5sqrt(2))2 + (5+5sqrt(2))2 )

= 12.175

(d)

θ = tan-1 ( (5+5sqrt(2)) / (5sqrt(3)-5sqrt(2)) )

θ = 82.5deg

<span> </span>

6 0
3 years ago
What kind of energy is stored when you squeeze a mattress?
yuradex [85]
Elastic Energy is stored in it.
4 0
3 years ago
Read 2 more answers
Other questions:
  • The star Rho1 Cancri is 57 light-years from the earth and has a mass 0.85 times that of our sun. A planet has been detected in a
    9·1 answer
  • Of the seven chambers in the masque of the red death, which room is the least popular, and why?
    8·1 answer
  • Which statement is true?
    11·1 answer
  • Which of the following statements describes Newton's second law?
    10·2 answers
  • The absorption line spectrum shows what we see when we look at a hot light source (such as a star or light bulb) directly behind
    11·1 answer
  • A block with mass m = 0.2 kg oscillates with amplitude A = 0.3 m at the end of a spring with force constant k = 12 N/m on a fric
    8·1 answer
  • A spherical shell has an outside radius of 2.60 cm and an inside radius of a. The shell wall has uniform thickness and is made o
    13·1 answer
  • Cindy pours cool milk into a hot bowl of oatmeal and then stirs it with a room-temperature spoon. Which substance will have heat
    11·2 answers
  • Which one of the following statements is true: The reactive power is the power dissipated in the form of heat by the network. Th
    14·1 answer
  • Which best explains horatio’s error? magnetism is not produced by electric currents unless the wire is coiled. the magnetic fiel
    11·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!