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
viva [34]
3 years ago
9

Please help me:(

Physics
1 answer:
Lelechka [254]3 years ago
3 0

Answer:B

Explanation:

I’m doing the same thing you are!

You might be interested in
A block of a plastic material floats in water with 42.9% of its volume under water. What is the density of the block in kg/m3?
adell [148]

To solve this problem we will apply the principle of buoyancy of Archimedes and the relationship given between density, mass and volume.

By balancing forces, the force of the weight must be counteracted by the buoyancy force, therefore

\sum F = 0

F_b -W = 0

F_b = W

F_b = mg

Here,

m = mass

g =Gravitational energy

The buoyancy force corresponds to that exerted by water, while the mass given there is that of the object, therefore

\rho_w V_{displaced} g = mg

Remember the expression for which you can determine the relationship between mass, volume and density, in which

\rho = \frac{m}{V} \rightarrow m = V\rho

In this case the density would be that of the object, replacing

\rho_w V_{displaced} g = V\rho g

Since the displaced volume of water is 0.429 we will have to

\rho_w (0.429V) = V \rho

0.429\rho_w= \rho

The density of water under normal conditions is 1000kg / m ^ 3, so

0.429(1000) = \rho

\rho = 429kg/m^3

The density of the object is 429kg / m ^ 3

7 0
2 years ago
Pls answer asap!! I need help on this question!
evablogger [386]

Hubble space telescope, Hubble deep field guide, moon, mercury, Saturn, sun, galaxy messier 101

8 0
2 years ago
Read 2 more answers
Tonya is thinking about the topic presented in the text, "Do opposites really attract?" Which of her thoughts is an example of c
tigry1 [53]

tanya is dumb  j j j j j j j j j jj j j j

6 0
3 years ago
Why is the current atomic model called the "electron could model"
vlada-n [284]
The diagram is showing a 3d model of an atom, with all of the electrons demonstrated in a rounded shape, which resembles a cloud, thus being called an electron cloud.
8 0
3 years ago
50POINTS PLEASE HELP SPACE QUESTION
leonid [27]
Regardless of the time of year, the northern and southern hemispheres always experience opposite seasons. This is because during summer or winter, one part of the planet is more directly exposed to the rays of the Sun than the other, and this exposure alternates as the Earth revolves in its orbit.
4 0
3 years ago
Read 2 more answers
Other questions:
  • A very massive object A and a less massive object B move toward each other under the influence of gravity. Which force, if eithe
    12·1 answer
  • What is the mass of an object if a net force of 8.0 N causes it to accelerate at 1.1 m/s2?
    7·1 answer
  • Which word in the sentence is a helping verb Jamie could probably repair his bike by himself
    15·1 answer
  • Tidal forces are gravitational forces exerted on different parts of a body by a second body. Their effects are particularly visi
    11·2 answers
  • A car traveled 176 miles on 6.4 gallons of fuel the car averaged how many miles per gallon
    8·1 answer
  • Sugar is made of carbon, hydrogen, and oxygen atoms.Sugar is
    9·1 answer
  • Find the quantity of heat needed
    10·1 answer
  • A bullet of mass 50 g travelling with a speed of 15ms penetrates into a
    7·1 answer
  • Which symbol represents a type of radiation that has the same mass as an
    5·2 answers
  • What is energy converted to if it is not used to do work?
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!