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
hoa [83]
3 years ago
6

A 200-N woman is standing on a concrete floor. How much force does the floor exert on her?

Physics
1 answer:
lisov135 [29]3 years ago
6 0
C.........................
You might be interested in
In an elastic head-on collision, a 0.60 kg cart moving at 5.0 m/s [W] collides with a 0.80 kg cart moving at 2.0 m/s [E]. The co
labwork [276]

Answer:

The answer is given below

Explanation:

u is the initial velocity, v is the final velocity. Given that:

m_1=0.6kg,u_1=-5m/s(moving \ west),m_2=0.8kg,u_2=2m/s,k=1200N/m

a)

The final velocity of cart 1 after collision is given as:

v_1=(\frac{m_1-m_2}{m_1+m_2})u_1+\frac{2m_2}{m_1+m_2}u_2\\  Substituting:\\v_1=\frac{0.6-0.8}{0.6+0.8} (-5)+\frac{2*0.8}{0.6+0.8}(2)= 5/7+16/7=3\ m/s

The final velocity of cart 2 after collision is given as:

v_2=(\frac{m_2-m_1}{m_1+m_2})u_2+\frac{2m_1}{m_1+m_2}u_1\\  Substituting:\\v_1=\frac{0.8-0.6}{0.6+0.8} (2)+\frac{2*0.6}{0.6+0.8}(-5)= 2/7-30/7=-4\ m/s

b) Using the law of conservation of energy:

\frac{1}{2}m_1u_1+ \frac{1}{2}m_2u_2=\frac{1}{2}m_1v_1+\frac{1}{2}m_2v_2+\frac{1}{2}kx^2\\x=\sqrt{\frac{m_1u_1+m_2u_2-m_1v_1-m_2v_2}{k}}\\ Substituting\ gives:\\x=\sqrt{\frac{0.6*(-5)^2+0.8*2^2-(0.6*3^2)-(0.8*(-4)^2)}{1200}}=\sqrt{0}=0\ cm

7 0
3 years ago
Which term best describes those processes that move weathered rock materials and soils downslope?
mote1985 [20]

Answer:

mass wasting

Explanation:

5 0
2 years ago
Which planet is smaller than Earth’s core?
makvit [3.9K]

Answer:

The answer <em><u>is C. Mars</u></em>. Mars and Mercury are both smaller than Earth's core. Hope this helps you :)

7 0
3 years ago
Read 2 more answers
PLEASE HELP!! explain the advantages of operating a motor vehicle that is 20% efficient instead of one that is 10 % efficient
sladkih [1.3K]
Well, one is more effeciant than the other. I think it would run on less gass.
7 0
3 years ago
A crane motor exerts 3,500.0 W to lift a load up 5 floors in 25.0 seconds. The crane did how much J of work.
sertanlavr [38]

Answer:

87,500 J

Explanation:

Power = energy / time

3,500.0 W = E / 25.0 s

E = 87,500 J

6 0
3 years ago
Other questions:
  • Two objects of the same mass travel in opposite directions along a horizontal surface. Object X has a speed of 5ms and object Y
    11·2 answers
  • What is the relationship between force of gravity and mass
    5·1 answer
  • Desiree has a scientific question that she wants to investigate. She has developed a hypothesis and method for her experiment. W
    11·2 answers
  • How can you use your personal choices to exercise more safely
    5·1 answer
  • A rock is projected from the edge of the top of a building with an initial velocity of 12.2 m/s at an angle of 53° above the hor
    6·1 answer
  • What net is required to push a sofa with a mass of 59 kilograms so that it accelerates at 9.75 meters/second^2 (assume a flat,fr
    8·1 answer
  • An airplane changes its velocity uniformly from 150 m/s to 60 m/s in 15 s. Calculate:
    13·1 answer
  • A 1460-kg submarine rises straight up towards the surface. Seawater exerts both an upward buoyant force of 16670 N on the submar
    9·1 answer
  • Please help I’ll give brainliest
    9·1 answer
  • The learning about Universe is<br> called ________ ...​
    14·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!