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3 years ago

15

A car is traveling in a straight path due east with a velocity of 8 meters per second. In a 10 second interval, how many meters

will the car travel? A) .80 m B) 2 m C) 18 m D) 80 m

2 answers:

34kurt3 years ago

6 0

The answer is c 18meters because if u add you get that answer hope I'm right bye

butalik [34]3 years ago

5 0

The answer is D.) 80m I just did this on Usatestprep.

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Explanation:

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harina [27]

Answer:

$\triangle d=21.726m$

Explanation:

From the question we are told that:

Unimpaired time to hit break $t_i=0.320s$

Drunk time $t=1s$

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Therefore

$\triangle d=v.dt$

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3 years ago

Sam heats an 8kg sample of sand, with a specific heat of 664 J/kg·C°, from 20° to 40°. What is the change in thermal energy?

zysi [14]

Answer:

106.24 kJ.

Explanation:

Given that,

Mass of sample of sand, m = 8 kg

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$Q=mc\Delta T\\\\Q=8\times 664(40-20)\\\\=106240\ J\\\\=106.24\ kJ$

So, the change in thermal energy is 106.24 kJ.

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3 years ago