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
bixtya [17]
3 years ago
11

The upward normal force exerted by the floor is 710 N on an elevator passenger who weighs 720 N . You may want to review (Pages

107 - 110) . For related problem-solving tips and strategies, you may want to view a Video Tutor Solution of Weighing yourself in an elevator. Part A What is the reaction force to the upward normal force exerted by the floor
Physics
1 answer:
Nookie1986 [14]3 years ago
5 0

Answer:

If the person is to remain the floor the reaction force will be equal to the normal force exerted by the floor.

F(normal) - F(reaction) = 0

That means the person is not moving with respect to the elevator.

Expanding the applied forces we have:

Fw - Fn = 720 - 710 = 10 N   where the positive direction is chosen as down

Fw is the weight of the person and Fn the force exerted on the person by the elevator,

The acceleration of the person the becomes F = m a = m * 10 N and will be downward agreeing with our choice of coordinate axes.

You might be interested in
A ball is suspended by a lightweight string, as shown in the figure above.
Irina18 [472]

<u>Answer </u>

A. 1 and 2

<u>Explanation </u>

At point 1 we have the highest potential energy and the kinetic energy is zero.

At 2 the potential energy is minimum and the kinetic energy is maximum.

The law of conservation of energy says that energy cannot be created nor destroyed. So, the change in P.E = Change in K.E.

P.E = height × gravity × mass. The height referred here is the perpendicular height. Gravity and mass are constant in this case.

From the diagram it can be seen clearly that the vertical height from 2 to 1 is much greater than from 4 to 3.

This shows that the change in P.E is greater between 1 and 2 and so is kinetic energy.


6 0
3 years ago
Read 2 more answers
Which of these experiments would make use of qualitative data
7nadin3 [17]
It has to due with numbers so I would say the last one!
5 0
3 years ago
Read 2 more answers
A complete path through which charge can flow is an electric what?
grigory [225]
<span>A complete path through which charge can flow is an "Electric Circuit"

Hope this helps!</span>
5 0
3 years ago
Read 2 more answers
Earth, has a bigger mass than the Moon .
raketka [301]
Decreased it because you can float a lot
5 0
2 years ago
The rectangular boat shown below has base dimensions 10.0 cm × 8.0 cm. Each cube has a mass of 40 g, and the liquid in the tank
Paladinen [302]

When boat is sunk into the liquid the net buoyancy on the boat is counterbalanced by weight of the boat

So here weight of the boat = Buoyancy force

let say boat is sunk by distance "h"

now we can say

F_b = \rho * V * g

F_b = 1000*0.10 * 0.08 * h * 9.8

now by above force balance equation we can write

m*g = F_b

0.040 * 9.8 = 1000 * 0.10 * 0.08 * h * 9.8

0.040 = 8h

h = 5 * 10^{-3} m

so boat will sunk by total 5 mm distance

8 0
3 years ago
Other questions:
  • Why doesn't the force of gravity change the speed of a bowling ball as it rolls along a bowling lane?
    9·1 answer
  • What is the mass of an 291pound persond
    12·1 answer
  • A small bug is lying resting when nine ants simultaneously ambush it and begin pulling it in different directions. They are each
    6·1 answer
  • Identify conditions that can contribute to an increase in wind erosion.
    9·2 answers
  • A _______ is a repeating disturbance or vibration that transfers or moves energy from place to place without transporting mass.
    13·2 answers
  • A bullet that has been too badly mutilated to mark can be
    7·1 answer
  • Phương trình chuyển động thẳng đều của một chất điểm có dạng: x = 2t – 10. (x: km, t: h). Quãng đường đi được của chất điểm sau
    15·2 answers
  • What is happening to the car's motion?
    9·2 answers
  • What is the frequency of blue light that has a wavelength of 450 nm?
    14·1 answer
  • What is the unit of velocity ratio and why​
    10·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!