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Zina [86]
3 years ago
5

Bob has a brother, jim, who has a daughter named bertha. Bertha's daughter, jennifer, has a sister named penny. which of the fol

lowing indicates the relationship between jim and penny?
Physics
2 answers:
sammy [17]3 years ago
7 0
Grandparent and grandchild
Kryger [21]3 years ago
4 0

The correct answer is - grandparent and grandchild.

Jim has a daughter, The name of his daughter is Bertha. Bertha also has children, two daughters, one of which is Penny. Since Jim's daughter is Bertha, than the children of Bertha are his grandchildren, thus Penny is Jim's grandchild, and Jim is Penny's grandparent.

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An ideal spring hangs from the ceiling. A 2.15 kg mass is hung from the spring, stretching the spring a distance d = 0.0895 m fr
Igoryamba

Answer:

The kinetic energy of the mass at the instant it passes back through the equilibrium position is 0.06500 J.

Explanation:

Given that,

Mass = 2.15 kg

Distance = 0.0895 m

Amplitude = 0.0235 m

We need to calculate the spring constant

Using newton's second law

F= mg

Where, f = restoring force

kx=mg

k=\dfrac{mg}{x}

Put the value into the formula

k=\dfrac{2.15\times9.8}{0.0895}

k=235.41\ N/m

We need to calculate the kinetic energy of the mass

Using formula of kinetic energy

K.E=\dfrac{1}{2}mv^2

Here, v = A\omega

K.E=\dfrac{1}{2}m\times(A\omega)^2

Here, \omega=\sqrt{\dfrac{k}{m}}^2

K.E=\dfrac{1}{2}m\times A^2\sqrt{\dfrac{k}{m}}^2

K.E=\dfrac{1}{2}kA^2

Put the value into the formula

K.E=\dfrac{1}{2}\times235.41\times(0.0235)^2

K.E=0.06500\ J

Hence, The kinetic energy of the mass at the instant it passes back through the equilibrium position is 0.06500 J.

8 0
3 years ago
About three billion years ago, single-celled organisms called cyanobacteria lived in Earth’s oceans. They thrived on the ocean’s
pickupchik [31]
I think its Oxygen. 
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3 0
3 years ago
Read 2 more answers
When a firecracker explodes, what types of energy does it give off?
fomenos
The answer is c. 
Sound, light and heat energy.

Hope this helped :)
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3 years ago
What is the density of a block with a mass of 36 g and a volume of 9 cm3?.
pshichka [43]
Density= how much mass is in a certain volume 
Therefore, you do (mass/volume).
density of the block is
36g/9cm3
or
4g/cm3
Meaning that there is 4 grams of mass in each cm3.
3 0
4 years ago
Read 2 more answers
Please someone help me? if you have a good answer I will gave U a brainlest :)
Natali5045456 [20]

Answer:

for one its photo

Explanation: answers

this is easy 1. im not sure

2. erosion

3. is deposition

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