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
Viktor [21]
3 years ago
11

When have you experienced an increase in kinetic energy within a system?

Physics
1 answer:
Mars2501 [29]3 years ago
8 0

Answer:

If a man starts running on a boat with an acceleration a with respect to the boat, there is no external force that acts on the Boat+Man system

You might be interested in
a car was traveling at 30.0 m/s when a small child darted onto the road 60.0 m away. Reacting instantly the driver slams the bra
Galina-37 [17]
2 seconds,,,,,,,,,,,,,,,,,,,,,,,
5 0
3 years ago
A planetâs moon revolves around the planet with a period of 39 Earth days in an approximately circular orbit of radius of 4.8Ã10
Alchen [17]

Answer:

v = 895 m/s

Explanation:

Time period is given as 39 Earth Days

T = 39 days \times 24 hr \times 3600 s

T = 3369600 s

now the radius of the orbit is given as

r = 4.8 \times 10^8 m

so the total path length is given as

L = 2 \pi r

L = 2\pi (4.8 \times 10^8)

L = 3.015 \times 10^9

now the speed will be given as

v = \frac{L}{T}

v = \frac{3.015 \times 10^9}{3369600}

v = 895 m/s

7 0
3 years ago
How many significant figures should be written in the sum 4.65g +9.032g+580.0078+540.439g?
Ne4ueva [31]

Answer: 1.13 X 10^3 g or 1130 g

Explanation: When you add up everything, you will get 1134.1288 g = 1.11341218 X 10^3. But while adding significant figures, we always look for the least significant figures (here 4.65 has least sig. figures  i.e. 3) and take that as a reference to how many significant figures we should have in the answer. (Pretty hard to explain!) Hope you got it!!

7 0
3 years ago
Alan leaves Los Angeles at 8:00 a.m. to drive to San Francisco, 400 mi away. He travels at a steady 45.0 mph . Beth leaves Los A
WARRIOR [948]

Answer:

a.Beth

b.2232 s

Explanation:

We are given that

Distance,d=400 mi

Speed of Alan,v=45 mph

Speed of Beth,v'=55 mph

a.Time =\frac{distance}{speed}

Using the formula

Time taken by Alan=\frac{400}{45}=8.89 hr

Time taken by Beth=\frac{400}{55}=7.27hr

Alan will reach San Francisco at 4:53 PM

Beth will reach San Francisco at 4:16 PM

Beth will reach before Alan.

b.Difference between time=8.89-7.27=1.62 hr

t=1.62 hr

1.62-1=0.62 hr

0.62 hr=0.62\times 60\times 60=2232 s

Hence, Beth has to wait 2232 s for Alan to arrive .

6 0
3 years ago
When does skydiver reach terminal velocity?
Dovator [93]
When the force of air resistance on the skydiver
is equal to the skydiver's weight.
5 0
3 years ago
Other questions:
  • 1.How long dose long term alcohol abuse affect the liver ?
    15·2 answers
  • Which one of the following is NOT an evidence of the Big Bang Theory? A. most objects in space are moving away from one another
    14·1 answer
  • elements are organized based on their properties on a chart called modern periodic table which of the following statements is tr
    13·1 answer
  • A charged object is suspended motionless in the air by the gravitational force pulling it down and an electric force pushing it
    6·1 answer
  • A fan that can provide air speeds of up to 40 m/s is to be used in a low-speed wind tunnel with atmospheric air at 17◦C. If one
    10·1 answer
  • What is one common product that uses microwaves
    9·1 answer
  • A bulldozer does 4,500 J of work to push a mound of soil to the top of a ramp that is 15 m high. The ramp is at an
    15·2 answers
  • In Ch. 1.6, the authors point out that interstellar space is not actually as empty as it seems. There is actually a lot of diffu
    12·1 answer
  • When a machine is used to perform a task, work output is always more than work input. please select the best answer from the cho
    14·1 answer
  • What is the centripetal force
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!