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SOVA2 [1]
3 years ago
9

As compared to developing countries, developed countries have a

Physics
1 answer:
CaHeK987 [17]3 years ago
8 0

Answer:

B. lower average income, higher population rate, and less waste production.

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The law of conservation of mass applies to all chemical reactions.
serious [3.7K]
True. No matter can be created nor destroyed in pretty much every aspect of life, especially chemical reactions.
3 0
3 years ago
What is the volume of a 72 g of copper if copper has a density of 9 g/cm3
azamat

Answer:

8 centimetre cube

Explanation:

because volume is equal to mass per densiry

6 0
4 years ago
As heat is added to water, is it possible for the temperature measured by a thermometer in the water to remain constant?
Mazyrski [523]

Answer:

C. Yes, the water could be changing the phase.

Explanation:

6 0
3 years ago
If an object is rolling without slipping, how does its linear speed compare to its rotational speed?
RoseWind [281]

Answer:

v = rw

Explanation:

When an object is rolling continuously without slipping, then every angle it rotates through, is equal to a distance the perimeter has rotated.

If the object completes 10 revolutions and takes a particular time, let's say t to complete it. The angular distance would then be 20 π rad, while its angular velocity will be 20 π/t

The circumference will somehow translate to the distance it covers, which is 20πr, this means that the speed is 20πr/t

So, like the question asked, the linear speed compared to angular speed is

v : w

20πr/t : 20πt, which can be simplified to

r : 1

In essence, v = rw

3 0
4 years ago
If you need 40.0 Nm of torque in order to loosen a nut on a wn
KonstantinChe [14]

Answer:

0.301 m

Explanation:

Torque = Force × Radius

τ = Fr

40.0 Nm = 133 N × r

r = 0.301 m

The mechanic must apply the force 0.301 m from the nut.

6 0
3 years ago
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