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
maksim [4K]
3 years ago
9

This experiment, you compare several unknown powders to known powders. What is the name given to all of the known materials used

for comparison in this experiment?
A.quantities
B.controls
C.constants
D.variables
Physics
2 answers:
Neporo4naja [7]3 years ago
8 0

the correct answer is B .Controls

brilliants [131]3 years ago
5 0
<span>B. Controls: The known powders attributes are already studied, so the are used as control measures to compare with the findings in the experiment with the unknown powders.</span>
You might be interested in
The earth has radius R. A satellite of mass 100 kg is in orbit at an altitude of 3R above the earth's surface. What is the satel
Vera_Pavlovna [14]

Answer:

W= 61.3 N

Explanation:

The only force acting on the satellite is the one due to the attraction from Earth, which obeys the Newton's Universal Law of Gravitation, as follows:

Fg =G*ms*me / (res)²

This force, also obeys the Newton's 2nd Law, so we can write the following equation:

G*ms*me*/ (res)² = ms* a = ms*g

We call to the product of the mass times the acceleration caused by gravity (g), the weight of this mass, so we can write as follows:

G*ms*me / (res)² = ms*g = W (1)

where G = 6.67*10⁻11 N*m²/kg², ms= 100 kg, me= 5.97*10²⁴ kg, and

res=  4 *re = 4*6.37*10⁶ m.

Replacing all these known values in (1), we get the value of W:

W =(( 6.67*5.97/(4*6.37)²) *( 10⁻¹¹ * 10²⁴ /10¹²) )* 100 N = 61.3 N

6 0
3 years ago
A 3250 N car is pushed a distance of 35 m the power was 11375 J, how long did it take?
irakobra [83]

Answer:

10.8s

Explanation:

Given parameters:

Force on the car  = 3250N

Distance  = 35m

Power  = 11375W

Unknown:

Time taken = ?

Solution:

To solve this problem;

 Power is the rate at which work is done

         Power = \frac{work done }{time}  

  Work done  = force x distance  = 3250 x 35  = 123200J

Now;

          11375  = \frac{123200}{t}  

           11375t  = 123200  

                   t  = 10.8s

5 0
3 years ago
Density is found by dividing ____.
bezimeni [28]
<span>Mass represents the density of an object multiplied with the volume it occupies. As a result, an object's density is found by dividing its mass by its volume. So the answer is a.</span>
6 0
3 years ago
Read 2 more answers
To balance the forces on the box what direction must you push?
ss7ja [257]
The correct answer would be left
3 0
3 years ago
In the United States, where can volcanoes be found?
Sedbober [7]
<span>The volcanoes of USA are located along the west coast, at the subduction of the Pacific and North American tectonic plates. During the 20th century there were only two eruptions in continental USA; Lassen in 1915, and Mt St Helens in 1980. Alaska and Hawaii contain currently active volcanoes. hope this helps:)</span>
7 0
3 years ago
Other questions:
  • What three basic components are atoms made of?
    12·1 answer
  • Tory has a mass of 40kg. She sleds down a hill that has a slope of 25 degrees. what is the component of her weight that is along
    9·1 answer
  • What is the displacement of a car with an acceleration of 4.00 m/s2 as it increases.
    11·1 answer
  • A person whose mass is m = 70.0 kg m=70.0 kg steps on a mechanical bathroom scale placed on an inclined plane that makes the ang
    8·1 answer
  • Without being able to look into the earth , a scientist would not be able to determine if this region has karst topography
    5·2 answers
  • Be sure to answer all parts. Assume the diameter of a neutral helium atom is 1.40 × 102 pm. Suppose that we could line up helium
    9·1 answer
  • The electrostatic attractions in crystalline salts, such as sodium chloride, are formed by __________ between positive and negat
    8·2 answers
  • The energy transformation a leaf on a tree undergoes when sunlight shines on it is an example of what?
    9·1 answer
  • Describe an experiment to show that air support burning​
    13·1 answer
  • Which of the following is an example of a luminous object? <br>Dog<br> Tree <br>Candle <br>Moon​
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!