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
andreyandreev [35.5K]
3 years ago
5

a student measure the mass of an 8 cm^3 block of brown sugar to be 12.9 g. what is the density of the brown sugar?

Physics
1 answer:
schepotkina [342]3 years ago
4 0
Density = mass / volume ;
1 Cubic Centimeter = 0,000001 Cubic Meter
8 cm^3 = 0.000008 m^3
12,9 g = 0,0129 kg


The density is 0,0129 kg/ 0,000008 m^3 = <span><u>1612,5 kg/m^3</u> </span>
You might be interested in
A jogger runs 6 km north ,5 km east then another 4km north her average speed 8 km how long will it take her to complete her run
LekaFEV [45]

The time taken to complete her run is 1.9 hr.

<u>Explanation:</u>

Speed is a scalar quantity and it is defined as the ratio of distance covered to the time taken to cover that distance. As distance is also a scalar quantity, so the directions given in the problem can be ignored. Thus, the distance covered by the jogger is the sum of kilometers given in problem.

Distance covered = 6+5+4 = 15 km

And the speed is given as 8 km/hr.

So the time taken will be ratio of distance to speed.

\text { time }=\frac{\text {distance}}{\text {speed}}=\frac{15}{8}=1.9 \text { hour }

So the jogger will take 1.9 hr to complete her run.

8 0
3 years ago
Pushing a rock from a hill top is called
wariber [46]
It's called "utter disregard for the safety and welfare
of the people standing at the bottom of the hill".
6 0
3 years ago
Which of these substances has the greatest index of refraction?
Inessa05 [86]
D. diamond, is the best option..
7 0
3 years ago
Read 2 more answers
Calculate a rate of cooling down of air from 80 C to 5C Show calculation. Give an answer in cubic meters per minute and cfm.
antoniya [11.8K]

Explanation:

Given that,

Rate of cooling of air

Initial temperature= 80°C

Final temperature = 5°C

We need to calculate

Using newton's law of cooling

\dfrac{dT}{dt}=c(T-T_{0})

\dfrac{dT}{dt}=c(\dfrac{T_{1}+T_{2}}{2}-T_{0})

Where, dT=T_{1}-T_{2}

Here, T =\dfrac{T_{1}+T_{2}}{2}

T_{0} = 25°C  (surrounding temperature)

dt = 1 minute

\dfrac{dT}{dt}=c(\dfrac{T_{1}+T_{2}}{2}-T_{0})

Put the value into the formula

\dfrac{80-5}{1}=c(\dfrac{85}{2}-25)

c=\dfrac{75}{17.5}

c=4.285\ cubic\ meter/minute

Hence, This is the required answer.

3 0
2 years ago
Europa is one of the moons that revolve around Jupiter. A thick sheet of ice covers its entire surface. Many scientists believe
Bess [88]
Water vapor clouds that are breaking out of Europe’s surface, water is the basis of life so this would support the idea that there is life
8 0
3 years ago
Other questions:
  • A student does an experiment with a pendulum. In the first trial, she displaces the pendulum 5 cm. In the second trial, she disp
    14·2 answers
  • A positive charge Q1 = 30.5 nC is located at the origin. A negative charge Q2 = -3.5 nC is located on the positive x-axis p = 3
    9·2 answers
  • If f3=0 and f1=12n, what does the magnitude of f? 2 have to be for there to be rotational equilibrium? answer numerically in new
    15·1 answer
  • A refrigerator is removing heat from a cold medium at 3∘C at a rate of 5400 kJ/h and rejecting the waste heat to a medium at 30∘
    15·1 answer
  • What is background radiation?
    6·1 answer
  • An electric elevator with a motor at the top has a multistrand cable weighing 7 lb divided by ft. When the car is at the first​
    14·2 answers
  • A pilot flies in a straight path for 1 hour and 30 min. she then makes a course correction, heading 10 degrees to the right of h
    7·1 answer
  • What is the slope of a line that is perpendicular to a line whose equation is -2y=3x+7
    7·2 answers
  • Give the missing ammeter reading a and b. suggest why more current flow through some bulbs than through others Grade 10 question
    9·1 answer
  • A wind turbine takes in energy from wind with the goal of converting it into electrical energy. Much of the wind energy is also
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!