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
Cerrena [4.2K]
3 years ago
9

A wooden block meauring 40cm x 10cm x 5cm has a mass 850gm . find the density of wood?

Physics
1 answer:
Lelechka [254]3 years ago
5 0

Answer:

Explanation:

Density = Mass / Volume = 850 / 40*10*5 = 0.425 g /cm^3

You might be interested in
An 81.5-kg man stands on a horizontal surface.
OLga [1]

Answer:

a)V= 0.0827 m³

b)P=181.11 x 10²  N/m²

Explanation:

Given that

m = 81.5 kg

Density ,ρ = 985 kg/m³

As we know that

Mass = Volume x Density

81.5 = V x 985

V= 0.0827 m³

The force exerted by weight = m g

 F= m g= 81.5 x 10 = 815 N      ( Take ,g= 10 m/s²)

Area ,A= 4.5 x 10⁻² m²

The Pressure P

P=\dfrac{F}{A}

P = \dfrac{815}{4.5\times 10^{-2}}\ N/m^2

P=181.11 x 10²  N/m²

7 0
3 years ago
I need to speak with zuka
Alex787 [66]

Answer:

DMs are not accessible anymore. I assume Zuka is a staff member? the only way to talk to a staff member anymore is to report something, but even then, the probably won't even look at what they're deleting :/

May I have brainliest please? :)

3 0
2 years ago
Which of the following happens during cell division? Question 7 options: It becomes more difficult for the cell to get rid of wa
kolbaska11 [484]

Answer;

B. Each daughter cell receives its own copy of the parent cell's DNA.

Explanation;

Cell division is the process in which a parent cell divides, giving rise to two or more daughter cells. It is an essential biological process in many organisms.

There are two types of cell division. Mitosis is used for growth and repair and produces diploid cells identical to each other and the parent cell. Meiosis is used for sexual reproduction and produces haploid cells different to each other and the parent cell.

6 0
3 years ago
Compare the energy consumption of two commonly used items in the household. Calculate the energy used by a 1.40 kW toaster oven,
andrew-mc [135]

Energy = (power) x (time)

-- <u>For the toaster:</u>

Power = 1.4 kW  =  1,400 watts

Time = 5.4 minutes = 324 seconds

Energy = (1,400 W) x (324 s)  =  453,600 Joules

-- <u>For the CFL bulb:</u>

Power = 11 watts

Time = 10.5 hours = 37,800 seconds

Energy = (11 W) x (37,800 s)  =  415,800 Joules

-- The toaster uses energy at 127 times the rate of the CFL bulb.

-- The CFL bulb uses energy at 0.0079 times the rate of the toaster.

-- The toaster is used for 0.0086 times as long as the CFL bulb.

-- The CFL bulb is used for 116.7 times as long as the toaster.    

-- The toaster uses 9.1% more energy than the CFL bulb.

-- The CFL bulb uses 8.3% less energy than the toaster.  

7 0
3 years ago
What is the speed of a bobsled whose distance-time graph indicates that it traveled 119m in 27s
BaLLatris [955]
4ms I'm just guessing by the way

3 0
3 years ago
Other questions:
  • When you stretch a spring 13 cm past its natural length, it exerts a force of 21 N. What is the spring constant of this spring?
    13·2 answers
  • If an object has a kinetic energy of 30 j and mass of 34kg how fast is the object moving ?
    8·1 answer
  • During a testing process, a worker in a factory mounts a bicycle wheel on a stationary stand and applies a tangential resistive
    6·1 answer
  • Please help on this one?
    5·2 answers
  • The land between two normal faults moves upward to form a
    14·2 answers
  • A circuit contains three light bulbs in parallel. After observation, a fourth light bulb is added, also in parallel. How does th
    6·2 answers
  • A student connects four AA batteries (1.5 V each) in series to light up a light bulb. The circuit has a resistance of 50 Ω. How
    14·2 answers
  • when people walked on the moon, they found that they could jump higher than theu could back on earth. why is this true?
    6·1 answer
  • A worker pushes horizontally on a large crate with a force of 265.0 N and the crate moved 4.3 m. How much work was done?
    5·1 answer
  • A boy is swinging a yo-yo with mass 0.5 kg in a circle with radius 0.7 m at a
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!