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
wolverine [178]
3 years ago
6

Hello Please Help With A couple Science questions

Physics
2 answers:
matrenka [14]3 years ago
5 0
#1 A) Long wavelength and high frequency.

#2) A) Brightness.

#3) D) They are used to examine things.

#4) B) Compression and visible light waves.


Sav [38]3 years ago
4 0
<em>For the first one is A.</em>
<em>Second one is A.</em>
<em>Third one is D.</em>
<em>Forth one is B.</em>

<em>                                        Hope this helps:)</em>
You might be interested in
. Draw a Cartesian coordinate system on a sheet of paper. On this Cartesian coordinate system, draw each vector to scale, starti
Triss [41]

Answer:

a) the first vector has magnitude 58 cm and the angle is 15 measured clockwise from the positive side of the x-axis

b) the second vector, the magnitude is 55.7 cm and the angle is 35 half from the negative side of the x-axis in a clockwise direction

c) the magnitude is 54.2 cm with an angle of 18 measured counterclockwise from the x-axis

Explanation:

For this exercise we draw a Cartesian coordinate system in this system: East coincides with the positive part of the x-axis and North with the positive part of the y-axis.

a) the first vector has magnitude 58 cm and the angle is 15 measured clockwise from the positive side of the x-axis

b) the second vector, the magnitude is 55.7 cm and the angle is 35 half from the negative side of the x-axis in a clockwise direction

c) the magnitude is 54.2 cm with an angle of 18 measured counterclockwise from the x-axis

In the attachment we can see the representation of the three vectors

8 0
3 years ago
When moving a suitcase, you exert a force of 700 N and push it 3.0 m. How much work have you done on the suitcase?
skad [1K]

Answer:

2,100J

Explanation:

Workdone=Force x distance

=700 x 3

=2,100 J

8 0
3 years ago
Find V. in the circuit of the following figure:​
Angelina_Jolie [31]

Answer:

where is the figure

Explanation:

8 0
3 years ago
A car stands from rest and attains a speed of 20 m/s in 10 s. What distance will it cover ?​
sashaice [31]

Answer:

100m

Explanation:

100m

s=ut+1/2at^2

s= unknown, u=0, a=2, t=10

s=0*10+1/2(2)(10)^2

s=1/2(2)(100)

s=1(100)

displacement = 100 meters

4 0
3 years ago
2) A 20 kg mass moving at a speed of 3 m/s is stopped by a constant force of 15 N. How many seconds must the force act on the ma
hammer [34]

Take the object's starting direction of motion to be the positive direction, so that a stopping force acts in the opposite direction. By Newton's second law, the object undergoes an acceleration <em>a</em> such that

-15 N = (20 kg) <em>a</em>

Solve for <em>a</em> :

<em>a</em> = - (15 N) / (20 kg) = -0.75 m/s²

The object's velocity <em>v</em> at time <em>t</em> is then given by

<em>v</em> = 3 m/s + (-0.75 m/s²) <em>t</em>

so the time it takes for the object to slow to a rest is

0 = 3 m/s + (-0.75 m/s²) <em>t</em>

<em>t</em> = (3 m/s) / (0.75 m/s²) = 4.0 s

3 0
3 years ago
Other questions:
  • An experiment to measure the speed of light uses an apparatus similar to Fizeau's. The distance between the light source and the
    9·1 answer
  • (10%) Problem 10: A 7.25-kg bowling ball moving at 9.85 m/s collides with a 0.875-kg bowling pin, which is scattered at an angle
    15·1 answer
  • An explosion occurs 340 km away. Given that sound travels at 340 m/s, the time the sound takes to reach you is
    10·2 answers
  • A surfer is actually traveling on which part of a surface wave
    5·2 answers
  • What are some real life examples of Newtons 3 laws of motion?
    13·1 answer
  • How could you increase the number of snowmen destroyed by the sled sliding down the hill? SledAQ1 A. Increase the starting heigh
    15·2 answers
  • The _____ usually occur in nature as combined elements.
    7·1 answer
  • An automobile tire is rated to last for 60,000 miles. to an order of magnitude, through how many revolutions will it turn?
    11·1 answer
  • A machine that is used to print newspapers is a _____.
    14·2 answers
  • Genes can be turned on or turned off not all genes are active at one time true or false
    5·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!