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
IgorC [24]
3 years ago
5

You and your little cousin sit on a see-saw. You sit 0.5 m from the fulcrum, and your cousin sits 1.5 m from the fulcrum. You we

igh 600 N. How much does she weigh?
Physics
1 answer:
svetoff [14.1K]3 years ago
7 0

Answer:

200N

Explanation:

0.5/1.5=x/600N

1/3=x/600

x=200N

You might be interested in
Begin any simulation, and turn on Gravity Force in the central menu on the right. The gravity force arrow shows the direction an
Katyanochek1 [597]

Answer:

The gravity arrow for each body rotates, always pointing toward the other body. Both arrows grow longer when the bodies come closer to one another and shorter when they move farther apart. This change shows that the gravitational force is stronger the closer together the bodies are.

Explanation:

3 0
2 years ago
To determine an athlete's body fat, she is weighed first in air and then again while she's completely underwater. it is found th
il63 [147K]

The difference in weight is due to the displacement of water (the buoyancy of water is acting on the athlete thus giving her smaller weight).<span>

The amount of weight displaced or the amount of buoyant force is: </span>

Fb = 690 N - 48 N

Fb = 642 N

From newtons law, F = m*g. Using this formula, we can calculate for the mass of water displaced:

m of water displaced = 642N / 9.8m/s^2

m of water displaced = 65.5 kg

Assuming a water density of 1 kg/L, and using the formula volume = mass/density:

V of water displaced = 65.5kg / 1kg/L = 65.5 L

The volume of water displaced is equal to the volume of athlete. Therefore:

V of athlete = 65.5 L

The mass of athlete can also be calculated using, F = m*g

m of athlete = 690 N/ 9.8m/s^2

m of athlete = 70.41 kg

 

Knowing the volume and mass of athlete, her average density is therefore:

average density = 70.41 kg / 65.5 L

<span>average density = 1.07 kg/L = 1.07 g/mL</span>

5 0
3 years ago
Read 2 more answers
What is the total displacement of a child who walks 4m south 2m north 5m south and 5 m north?
seropon [69]
Your answer is going to be 2m south
3 0
3 years ago
A race car starts from rest and accelerates uniformly to 69 mph in 4.5 s.
Marizza181 [45]
For this question we should apply
a = v^2 - u^2 by t
a = 69 - 0 by 4.5
a = 69 by 4.5
a = 15.33
a = 6.85 m/s^2

If the answer in option is near to answer then , you can mark it as correct.
.:. The acceleration is 6.9 m/s^2
5 0
3 years ago
The​ time, t, required to drive a fixed distance varies inversely as the​ speed, r. It takes 3 hr at a speed of 14 ​km/h to driv
kenny6666 [7]

Answer:

time taken with speed 23 km/h will be 1.8 hours or 1 hour 48 minutes

Explanation:

Given:

Time is inversely proportional to the speed

mathematically,

t ∝ (1/r)

let the proportionality constant be 'k'

thus,

t = k/r

therefore, for case 1

time = 3 hr

speed = 14 km/hr

3 = k/14

also,

for case 2

let the time be = t

r = 23 km/h

thus,

we have

t = k/23

on dividing equation 2 by 1

we get

\frac{t}{3}=\frac{k/23}{k/14}

or

t=\frac{14\times3}{23}

or

t = 1.8 hr = or 1 hour 48 minutes ( 0.8 hours × 60 minutes/hour = 48 minutes)

4 0
3 years ago
Other questions:
  • A tube of water is open on one end to the environment while the other end is closed. The height of the water relative to the bas
    6·1 answer
  • in which phase change does a substance change from a solid to a gas vapor without changing to a liquid first?
    10·1 answer
  • You are to create a story for a child of 5-6 years old. You will explain the brain and its functions to them. You need to use th
    13·1 answer
  • (03.02 MC) Two students made the following statements to describe atmospheric conditions at a location. Student A: This area has
    9·1 answer
  • A Ferris wheel car is moving in a circular path at a constant speed. Is the car accelerating?
    9·1 answer
  • Which of the following is the cause of the change of seasons? A) the distance of a place from the Equator B) prevailing winds bl
    5·1 answer
  • Shawn and his bike have a total mass of
    8·1 answer
  • An object is thrown straight up into the air at 10 m/s. how fast is the object traveling after 2 seconds?
    15·1 answer
  • Need help please !!!! Hurry
    10·2 answers
  • Can a body moving at constant speed have acceleration ?​
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!