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iogann1982 [59]
2 years ago
12

10 cm^3 of iron have a smaller

Physics
1 answer:
IRISSAK [1]2 years ago
4 0

Explanation:

Mass of iron = (7.9)(10) = 79g

Mass of wood = (115)(0.7) = 80.5g

Therefore iron has a smaller mass than the wood, which is true.

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A wire of 1mm diameter and 1m long fixed at one end is stretched by 0.01mm when a lend of 10 kg is attached to its free end.calc
Otrada [13]

Answer:

E = 1.25×10¹³ N/m²

Explanation:

Young's modulus is defined as:

E = stress / strain

E = (F / A) / (dL / L)

E = (F L) / (A dL)

Given:

F = 10 kg × 9.8 m/s² = 98 N

L = 1 m

dL = 10⁻⁵ m

A = π/4 (0.001 m)² = 7.85×10⁻⁷ m²

Solve:

E = (98 N × 1 m) / (7.85×10⁻⁷ m² × 10⁻⁵ m)

E = 1.25×10¹³ N/m²

Round as needed.

5 0
3 years ago
Which sentence describes an object that has kinetic energy?
NemiM [27]

the answer would be the last one because kinetic energy is something in motion.

hope it helps.

3 0
3 years ago
Read 2 more answers
Which of the following is an example of frontier research?
riadik2000 [5.3K]

Testing the electrical resistance of different materials. it is the answer

3 0
2 years ago
A proton is accelerated from rest through a potential difference V0 and gains a speed v0. If it were accelerated instead through
Neporo4naja [7]

Answer:

Explanation:

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6 0
2 years ago
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m_a_m_a [10]
The answer is 18000 kgm/s

Momentum is mass times velocity so just do 750•24.
7 0
3 years ago
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