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julia-pushkina [17]
3 years ago
7

Which of the items has the least inertia while at rest? A. penny. B. airplane. C. frog. D. dog.

Physics
2 answers:
zmey [24]3 years ago
7 0

a penny because there are no mechanics in it and its also an inanimate object

im pretty sure its a penny

pochemuha3 years ago
4 0

Answer:

A penny

Explanation:

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A powerful motorcycle can produce an acceleration of 3.00 m/s2 while traveling at 90.0 km/h. At that speed the forces resisting
nata0808 [166]

Answer:

1185 N

Explanation:

From Newton’s second law of motion,  

F=ma where m= mass of motorcycle, a is acceleration of the motorcycle and F=Force

Net force acting on motorcycle F_{net} is given by  F_{net}=F-f

Where F is force acting on motorcycle and f is frictional force

Substituting F-f for F_{net}

F_{net}=ma hence  ma= F- f Substituting a with 3, m with 245Kg and f with 450N as provided

245*3= F- 450

F=245*3 +450= 1185 N

6 0
3 years ago
What is the speed of a wave in (m/s) with a 5 meter wavelength and a period of 20 seconds?
arlik [135]

Answer: 0.25 m/s

Explanation:  Speed = wavelengt · frequency  

v = λf   and frequency is 1/period  f = 1/T

Then v = λ/T = 5 m / 20 s = 0.25 m/s

6 0
2 years ago
Is water weaker than rock?
sveticcg [70]

Answer:

yes, if water was stronger then the rocks would not sink.

Explanation:

4 0
2 years ago
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You throw a ball into a box and close the lid. You hear the ball bouncing around inside as the ball’s energy changes from gravit
beks73 [17]

Answer:

Thermal energy.

Explanation:

We know that energy is conserved and it only transform one form to another form ,Like potential energy transform in to kinetic energy when a ball fall down from a height and obtain some velocity.

In this case energy changes from gravitational energy to kinetic energy then elastic energy and after some time this energy will convert in to thermal energy.

So the answer is thermal energy.

5 0
3 years ago
Chemical bonds form when atoms A.) gain protons. B.) combine nuclei C.) give up neutrons. D.) share or transfer electrons
frutty [35]
The correct answer is (D)
8 0
3 years ago
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