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
iris [78.8K]
3 years ago
9

John is gardening and finds a tree root in the soil. He decides he will try to pull it out. He grabs onto it and uses a force of

100 Newtons. He exerts that force for 5 seconds until he is able to yank the root out, 1 meter away. How much power did John use to extract the root?
20 joules/sec
25 joules/sec please help due soon
15 joules/sec
10 joules/sec
Physics
1 answer:
Leya [2.2K]3 years ago
7 0

Answer:

20 joules/sec

Explanation:

100/5=20

You might be interested in
The current flowing through a circuit can be measured by ?
MAXImum [283]
It can be measured by an ammeter.
6 0
3 years ago
Ella makes this table to organize her notes on whether atoms gain or lose energy during the changes of state.
solong [7]

Answer:

The answer is D.

7 0
3 years ago
Read 2 more answers
HELP!!!! WILL MARK BRAINLIEST!!!! IF YOU LEAVE AN ANSWER EXPLAIN! THANKS
Travka [436]

Answer:

the answer is C

Explanation:

we know this because if you compare the graphs and look at the direction. it isn't always in the explanation or the few sentences they gave you at the top. also, look at the waves, you can see in Davids drawing that it is directly straight up, A and B do not represent that. A isn't even a valid answer. Notice also in A that the arrow is going in the completely different direction than in Davids drawing. B is also going a different direction even though it is only turned a little bit although if it was straight up like Davids drawing then it would most likely be a correct answer. C does have one arrow going a different direction but look at how it has two, showing in which if the waves were to turn then the arrow is still valid

7 0
2 years ago
A motorcycle that is slowing down uniformly. The motorcycle covers 1 ????m=1000 m in 80 sec⁡. The motorcycle then covers the nex
Lynna [10]

Answer:

Part a)

acceleration = -0.042 m/s/s

Part b)

initial speed = 14.17 m/s

final speed = 5.77 m/s

Explanation:

Part a)

Let the initial velocity of the motorcycle is

v_i = v_o

now at the end of 80 s let the speed is

v_f = v_1

after another 120 s let the speed will be

v_f' = v_2

now we know that

d = \frac{v_i + v_f}{2} (t)

d = \frac{v_o + v_1}{2}(80)

1000 = 40(v_o + v_1)

also we know that

v_1 - v_o = a(80)

also we have

1000 = \frac{v_1 + v_2}{2}(120)

1000 = 60(v_1 + v_2)

now we can say

(v_2 + v_1) - (v_o + v_1) = \frac{50}{3} - \frac{50}{2}

also we know

v_2 - v_o = a(120 + 80)

-8.33 = 200 a

a = -0.042 m/s^2

Part b)

now we have

v_1 + v_o = 25

v_1 - v_o = (-0.042)(80)

v_1 = 10.83 m/s

so the starting velocity of the trip is

v_o = 25 - 10.83 = 14.17 m/s

now speed after t = 200 s is given as

v_2 = v_o + at

v_2 = 14.17 - (0.042)(200)

v_2 = 5.77 m/s

5 0
3 years ago
Consider the following possibilities and select the correct choice.
dezoksy [38]

Answer:

Tx not but mybe

Explanation:

for that reason its just trying to help

4 0
2 years ago
Other questions:
  • What do elements in the first two columns of the periodic table have in common? A. They have two valence electrons.
    10·2 answers
  • The warmest layer of Earth's atmosphere is the ___.
    7·1 answer
  • What will change the velocity of a periodic wave?
    10·1 answer
  • 1. A ball initially rolling at 10m/s comes to a stop in 25 seconds. Assuming the ball has
    6·1 answer
  • El ancho de la uña de su dedo meñique se acerca a una unidad metrica comun ¿cual?
    10·1 answer
  • An object increases vert its velocity from 22M/S 236M/S and five seconds. What is the acceleration of the object
    13·1 answer
  • 4. Who was the proponent of the Neo-classicism? a) Claude Debussy b) Joseph Maurice Ravel c) Igor Stravinsky d) Arnold Schoenber
    8·1 answer
  • If the forces on an object are greater than zero, the motion of an object will what?
    10·1 answer
  • food does not pass through the liver or the pancreas why are these organs dtill important parts of the digestive system?
    8·1 answer
  • A deuteron particle consists of one proton and one neutron and has a mass of 3.34x10^-27 kg. A deuteron particle moving horizont
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!