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
tresset_1 [31]
3 years ago
8

You, a 70 kg person, leap from a 10 m tall building and land feet first on a trampoline. The center of the trampoline where you

land sinks a total of 0.5 m before springing you back into the air. What is the spring constant for the trampoline?
Physics
1 answer:
Anon25 [30]3 years ago
4 0

Answer:

1373.4 N/m

Explanation:

Hooke's law states that the extension of a spring and force are related by the expression, F=kx where k is spring constant, x is extension of spring and F is the applied force. Making k the subject of the formula then

k=\frac {F}{x}

Also, F=gm hence the above formula is modified as

k=\frac {gm}{x}

Taking g as 9.81 m/s2 , x as 0.5 m and m as 70 kg then

k=\frac {9.81\times 70 kg}{0.5m}=1373.4 N/m

You might be interested in
Bradley drops a rock in a well. It falls for 12 seconds. How deep is the well?
erik [133]
It’s 12 seconds long
3 0
2 years ago
In the phenomenon known as the photoelectric effect, electric current will flow when light shines on certain substances.
svetlana [45]
The answer is true...............
8 0
3 years ago
Read 2 more answers
A space vehicle is traveling at 2980 km/h relative to Earth when the exhausted rocket motor is disengaged and sent backward. The
Strike441 [17]

Answer:

3054.4 km/h

Explanation:

Using the conservation of momentum

momentum before separation = 5M × 2980 Km/h where M represent the mass of the module while 4 M represent the mass of the motor

initial momentum = 14900 M km/h

let v be the new speed of the motor so that the

new momentum = 4Mv and the new momentum of the module  = M ( v + 94 km/h )

total momentum = 4Mv + Mv + 93 M = 5 Mv + 93M

initial momentum = final momentum

14900 M km/h = 5 Mv + 93M

14900 km/h = 5v + 93

14900 - 93 = 5v

v = 2961.4 km/h

the speed of the module = 2961.4 + 93 = 3054.4 km/h

8 0
3 years ago
The earth has a vertical electric field at the surface, pointing down, that averages 100 N/C. This field is maintained by variou
zlopas [31]

Answer:

q = 3.6 10⁵  C

Explanation:

To solve this exercise, let's use one of the consequences of Gauss's law, that all the charge on a body can be considered at its center, therefore we calculate the electric field on the surface of a sphere with the radius of the Earth

          r = 6 , 37 106 m

          E = k q / r²

          q = E r² / k

          q = \frac{100 \ (6.37 \ 10^6)^2}{9 \ 10^9}

          q = 4.5 10⁵ C

Now let's calculate the charge on the planet with E = 222 N / c and radius

           r = 0.6 r_ Earth

           r = 0.6 6.37 10⁶ = 3.822 10⁶ m

           E = k q / r²

            q = E r² / k

            q = \frac{222 (3.822 \ 10^6)^2}{ 9 \ 10^9}

            q = 3.6 10⁵  C

4 0
3 years ago
Am I correct?? Will give brainliest
IRISSAK [1]

You are correct earth science is studied to predict planetery changes


4 0
3 years ago
Read 2 more answers
Other questions:
  • A baseball is thrown vertically up to a height of 30 m on Earth. If the same ball is thrown up on the moon with the same initial
    6·1 answer
  • The human ear canal is about 2.9 cm long and can be regarded as a tube open at one end and closed at the eardrum. What is the fu
    13·1 answer
  • A bug flies at a velocity of 0.75 m/s into an oncoming breeze blowing at 0.25 m/s. What is the resultant velocity of the bug?
    5·1 answer
  • HELLLLLLLLLLLLLLLLP QUICKKKKKKKK PLZZZZZ
    5·2 answers
  • Peter notices that his eight-year-old daughter frequently mentions the unusual habits of a new boy, who is from a different cult
    6·1 answer
  • What does it mean when there is a curved line going upwards on a graph?<br><br>science 8th grade :)
    10·1 answer
  • If a water wave vibrates up and down three times each second and the distance between wave crests is 2 meters, what are:
    15·2 answers
  • Is time matter?<br><br>True or False<br>Plss help​
    11·2 answers
  • A 25 kg mass is hanging from two cables, each with their own tension. Cable 1 is connected to the
    9·1 answer
  • A machine does 50 J of Work on a 10 Kg Object. What is the Change in the Objects Total Energy?
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!