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3 years ago

what is measurement? why is it important to have regular supervision of the weights and measurement in the market?

Physics

1 answer:

saveliy_v [14]3 years ago

5 0

Answer:

The comparison of unknown quantity with known quantity is called measurement.

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How do you find distance from average velocity and time

AlekseyPX

Answer:

Calculate the total distance travelled by the object - its motion is represented by the velocity-time graph below.

Here, the distance travelled can be found by calculating the total area of the shaded sections below the line.

½ × base × height.

½ × 4 × 8 = 16 m 2

(10 – 4) × 8 = 48 m 2

Explanation:

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3 years ago

What is the distance between a 900 kg compact car and a 1600 kg pickup truck if the gravitational force between them is about 0.

elena-14-01-66 [18.8K]

Answer:

The distance is 0.96m

Explanation:

Given

m1= 900kg

m2= 1600kg

Force F= 0.0001nN

G=6.67430*10^-11 Nm^2/kg^2

Required

The distance r

Step two:

the formula for the force is given as

F = Gm1m2/r2

make r subject of the formula

$r= \sqrt{\frac{Gm1m2}{F} }$

$r= \sqrt{\frac{6.67430*10^-11*900*1600}{0.0001} }\\\\r= 0.00009610992/0.0001`}\\\\r= 0.96m$

Answer:

The distance is 0.96m

Explanation:

Given

m1= 900kg

m2= 1600kg

Force F= 0.0001nN

G=6.67430*10^-11 Nm^2/kg^2

Required:

The distance r

Step two:

the formula for the force is given as

F = Gm1m2/r2

make r subject of the formula

$r= \sqrt{\frac{Gm1m2}{F} }$

$r= \sqrt{\frac{6.67430*10^-11*900*1600}{0.0001} }\\\\r= 0.00009610992/0.0001`}\\\\r= 0.96m$

3 0

3 years ago

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A speaker vibrates at a frequency of 200 hz. What is it's period ?

Katen [24]

200 Hz = 200 cycles per sec

1 cycle, the period = 1/200 = 0.005 seconds, or 5 milli seconds.

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3 years ago

The chemical name for bleach is sodium hypochlorite (NaClO). It is created by a chemical reaction between sodium (Na), chlorine

Sedbober [7]

O + Na + Cl = NaClO

Reactants :

O -> Oxygen

Na -> Sodium

Cl-> Chlorine

hope this helps!

4 0

3 years ago

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Which surface has the most friction? a An ice rink b A grassy field c A paved road

vovangra [49]

Answer:

An Ice Rink

Explanation:

7 0

3 years ago

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what is measurement? why is it important to have regular supervision of the weights and measurement in the market?​

what is measurement? why is it important to have regular supervision of the weights and measurement in the market?