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
Tanya [424]
3 years ago
9

Help with everything

Physics
1 answer:
bagirrra123 [75]3 years ago
8 0
I don't really now a answer to the first one but this answer is for the second one: They provide a standardized system of classification for a language barrier.
You might be interested in
URGENT!! An astronaut on the International Space Station is doing a spacewalk to fix a solar panel that has malfunctioned. While
aleksley [76]

C because the air will push him closer to the space station

3 0
3 years ago
Read 2 more answers
Jet fighter planes are launched from aircraft carriers with the aid of their own engines and a catapult. If in the process of be
ANTONII [103]

Answer:

W=315 x 10⁵ J

Explanation:

Given that

F= 2.5 x 10⁵ N

d= 90 m

K.E.=5.4 x 10⁷ J

We know that work done by all force is equal to the change in kinetic energy

Lets take work done by catapult is W

W + F.d= K.E.

W= 5.4 x 10⁷ -  2.5 x 10⁵  x 90 J

W= (540 - 25 x 9) 10⁵ J

W=315 x 10⁵ J

5 0
3 years ago
A horizontal spring with stiffness 0.4 N/m has a relaxed length of 11 cm (0.11 m). A mass of 21 grams (0.021 kg) is attached and
riadik2000 [5.3K]

Answer:

0.6983 m/s

Explanation:

k = spring constant of the spring = 0.4 N/m

L₀ = Initial length = 11 cm = 0.11 m

L = Final length = 27 cm = 0.27 m

x = stretch in the spring = L - L₀ = 0.27 - 0.11 = 0.16 m

m = mass of the mass attached = 0.021 kg

v = speed of the mass

Using conservation of energy

Kinetic energy of mass = Spring potential energy

(0.5) m v² = (0.5) k x²

m v² = k x²

(0.021) v² = (0.4) (0.16)²

v = 0.6983 m/s

5 0
3 years ago
Fill-in-the-blank test questions measure ________; matching concepts with their definitions measures ________.
Ulleksa [173]

Test questions measure recall; matching concepts with their definitions measures recognition.

<u>Explanation: </u>

According to Psychology our brain remembers everything what we learn but the understanding and remembering the right answer for the right question needs training and understanding ability. So in order to enhance the ability of recalling and recognizing among the students, the concept of test questions and matching with definitions are used in curricular activities.

As the students will be learning different terms, definitions, methods and different subjects, they should be able to distinguish among different definitions as well as they should recall the things they have learnt. So the answers for the test questions will help to recall the topics learnt by the students while the matching concept will help the students to recognize each definition with their terms.

6 0
2 years ago
Un cuerpo de masa m tiene una velocidad v. si la masa del cuerpo se incrementa al triple de su valor original y la velocidad se
serg [7]
Urrrrrrrr nope now clue at all
5 0
3 years ago
Other questions:
  • A sound wave traveling downward with a speed of about 4,000 m/s suddenly slows to 1,500 m/s not far below the Earth’s surface.
    12·2 answers
  • What rule does static electricity follow
    6·1 answer
  • Friction is always undesirable. True False
    5·2 answers
  • How do you know the force for an acceleration of zero?
    8·1 answer
  • Why does water in hot springs always remain hot? Why doesn't it's thermal energy spread out?​
    8·1 answer
  • Plz helppppppp I need helpppppp
    9·1 answer
  • An athlete runs four laps of a 400 m track. What is the athlete's total displacement?​
    14·1 answer
  • I WILL MARK BRAINLIEST!
    6·1 answer
  • A rectangular room twice as long as it is wide would contain 145 square feet more if each side were one foA rectangular room twi
    7·1 answer
  • By what percent does the braking distance of a car decrease, when the speed of the car is reduced by 10.3 percent? Braking dista
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!