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
julsineya [31]
4 years ago
11

A body weighs 100newtons and 80newtons when submerged in water.calculate the upthrust action on the body

Physics
1 answer:
katovenus [111]4 years ago
3 0

Answer:

20 N

Explanation:

In air, the normal force is equal to the weight.

∑F = ma

N − mg = 0

N = mg

Submerged in water, the normal force is equal to the weight minus the buoyant force:

∑F = ma

B + N − mg = 0

N = mg − B

Plugging in values:

80 N = 100 N − B

B = 20 N

You might be interested in
Density is a physical property that relates the mass of a substance to its volume. A. Calculate the density, in g/mL , of a liqu
Angelina_Jolie [31]

Answer:

A) 0.660 g/ml

B) 1.297 ml

C) 0.272 g

Explanation:

Every substance, body or material has mass and volume, however the mass of different substances occupy different volumes.  This is where density D appears as a  physical characteristic property of matter that establishes a relationship between the mass m of a body or substance and the volume V it occupies:

D=\frac{m}{V} (1)

Knowing this, let's begin with the answers:

<h2 /><h2>Answer A:</h2>

Here the mass is m=0.155g and th volume V=0.000235L=0.235mL

Solving (1) with these values:

D=\frac{0.155g}{0.235mL} (2)

D=0.660g/mL (3)

<h2>Answer B:</h2>

In this case the mass of a sample is m=4.71g and its density is D=3.63g/mL.

Isolating V from (1):

V=\frac{m}{D} (4)

V=\frac{4.71g}{3.63g/mL} (5)

V=1.297mL (5)

<h2>Answer C:</h2>

In this case the volume of a sample is V=0.293mL and its density is D=0.930g/mL.

Isolating m from (1):

m=D.V (6)

m=(0.930g/mL)(0.293mL) (7)

m=0.272g (8)

4 0
3 years ago
Read 2 more answers
what would the mass be of an object that was moving at a velocity of 35 m/s and has a kinetic energy of 500j be?
bearhunter [10]

Answer:

0.816 kg

Explanation:

E_k=\frac{1}{2}mv^{2}\\

so m=\frac{2E_k}{v^2}=\frac{2\times500}{35^2}=0.816 kg

5 0
2 years ago
Does plants have prokaryotic cells?
vova2212 [387]
No they have eukaryotic cells
7 0
3 years ago
Read 2 more answers
Which two processes increase the motion of the molecules?
anzhelika [568]
The answer is 2 because a and b are slowing it down by condensing it and then freezing it so its not one, b and c are opposites because b slows it down whereas c speeds it up so its not 3, and number 4 is the same explanation for number 3
hope you pass :)
5 0
4 years ago
Select the correct answer.
anyanavicka [17]
<h2>MULTIPLE CHOICES</h2>

\large\mathcal{QUESTION:}

  • What is the basic unit of all matter?

\large\mathcal{CHOICES:}

  • OA neutron
  • OB. atom
  • OC. electron
  • OD. proton
  • OE. nucleus

\large\mathcal{ANSWER:}

  • B. Atom

_____

  • <u>Atom</u> is the smallest, <u>indivisible unit of a chemical</u> <u>element and the fundamental unit of matter</u>. It consists of a nucleus (neutrons + protons) surrounded by an electron cloud. The <u>atom</u> is the smallest unit of matter that cannot be divided chemically and is a building block with its own set of properties.

<h3>#ProvideUniqueAnswers</h3>
6 0
2 years ago
Other questions:
  • Answer these questions fast please:-
    13·1 answer
  • 7. What major disaster followed the comet of 1664?
    14·1 answer
  • Which two properties characterize an air mass?
    14·2 answers
  • 2NaOH + H2SO4 → Na2SO4 + H2O
    7·2 answers
  • Select the correct answer. Which electromagnetic waves have the highest frequencies in the electromagnetic spectrum?
    8·1 answer
  • __________ (marketing research) information is collected from questions (measurements) that are free from systematic or statisti
    7·1 answer
  • HEELLP!!!!!!<br> How many paragraphs do you need for a science fair research paper?
    5·1 answer
  • The outer core is thought to be a solid layer of the Earth's core. <br><br> True or False?
    5·2 answers
  • A car with mass 450 kg has a kinetic energy of 16,256 j. What is the speed of the car?
    13·2 answers
  • .A coin rolls off the edge of a table. The coin
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!