2 years ago

PLZ HELP Lab: Circuit Design

Physics

1 answer:

Masteriza [31]2 years ago

6 0

Answer:

Explanation:

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8. What is the mass of a toy car with a speed of 12.5 m/s and 47500 J of kinetic energy?

Alla [95]

Answer:

608kg

Explanation:

Formula : Kinetic energy

½ ×mass x speed²

47500

½×12.5²

=608 Kg

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3 years ago

When a piece of iron or mass 78 gm is put in a graduated cylinder containing 100 cm cube of water the reading of the cylinder be

Wittaler [7]

Answer:

Ro = 7.8 [g/cm³]

Explanation:

According to the principle of Archimedes, the volume of a body immersed in a liquid is equal to the volume displaced by water. That is, in this problem The displacement volume is equal to the new volume minus the original volume.

$V_{n}=110[cm^{3} ]\\V_{o}=100[cm^{3} ]\\V_{d}=110-100 = 10 [cm^{3} ]$

We now know that density is defined as the relationship between mass and volume.

$Ro = m/V_{d}$

where:

Ro = density [g/cm³]

m = mass = 78 [g]

Vd = displacement volume [cm³]

$Ro = 78/10\\Ro = 7.8 [g/cm^{3} ]$

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3 years ago

What are some evidences of early peoples concern for teeth

Alexandra [31]

Replacement teeth were made even back then out of primitive materials, and pig hair was used like floss

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3 years ago

Calculate the power of a person that does 8kJ of work in 4 hours

anzhelika [568]

$\text{Power,}~ P = \dfrac{\text{Work done}}{\text{Time}}\\\\\\~~~~~~~~~~~~~=\dfrac{8 \times 1000~J}{4 \times 3600~ s}\\\\\\~~~~~~~~~~~~~~=\dfrac{80}{144}\\\\\\~~~~~~~~~~~~~~=0.56~ W$

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2 years ago

Read 2 more answers

Please do number 11 need this question bad

ArbitrLikvidat [17]

Gas always expands or contracts to exactly fill whatever you put it in.

So to measure the volume of a gas, just measure the volume of the jar, the tank, the bottle, the can, or the balloon that the gas is in.

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3 years ago