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givi [52]
4 years ago
13

How long does it take for a Ford Econoline van moving at 39.5 m/s to travel 600 m?

Physics
1 answer:
Andrej [43]4 years ago
6 0

Answer: B. 15.2s

Explanation: 600/39.5 = about 15.2

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Bob has a cup of hot chili. It is too hot to eat.
Kazeer [188]

Answer:

B.  It has increased the chili's potential energy

Explanation:

When there is an increase in the kinetic energy of a substance, the vibrations of atoms and molecules of the substance increases.

This kinetic energy increases the thermal energy of the substance.

So, when there is a decrease in the thermal energy of a substance, the kinetic energy decreases because the random motion of the molecules or atoms becomes feeble.

If the kinetic energy of the substance decreases, the potential energy of the substance increases.

So, if the chili has cooled after 10 minutes, it has increased the potential energy of the substance.

7 0
4 years ago
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An artillery shell is launched on a flat, horizontal field at an angle of α = 31.7° with respect to the horizontal and with an i
kompoz [17]

Answer:193.90 m/s

Explanation:

Given

launch angle \theta =31.7^{\circ}

launch velocity v_0=202 m/s

Horizontal velocity of the shell after t=18.96 s

time of flight of Projectile T=\frac{2u\sin \theta }{g}

T={\frac2\times 202\sin 31.7}{9.8}

T=21.66 s

i.e. projectile is declining as t>\frac{T}{2}

but horizontal component of velocity will remain same as there is no opposing force in horizontal direction

Horizontal component of velocity is

u_x=v_0\cos \theta =202\cdot \cos 31.7=193.90 m/s  

8 0
3 years ago
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45 joules were expended to move a box weighing 30 newtons. How many meters was it moved?
slava [35]

Answer:

1.5 meter is the answer

7 0
3 years ago
No wrong answers please
zepelin [54]
Sorry i can’t help sorry good luck tho!!!!
4 0
4 years ago
Measure the amount of space an object takes up is what
kondaur [170]

That's what scientists and other technical people call the object's "<em>volume</em>".

5 0
4 years ago
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