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Murljashka [212]
2 years ago
9

A car traveling 35 km/hr accelerates to a speed of 45 km/hr in .25 hr. What is its acceleration

Physics
1 answer:
ahrayia [7]2 years ago
6 0

Answer:

a=40Km/hr^2

Explanation:

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A system of releases 125kJ of heat while 104kJ of work is done in the system. Calcilate the change om imternal energy (in kJ)
artcher [175]

Answer:

DU = 21 KJ

Explanation:

Given the following data;

Quantity of heat = 125 KJ

Work = 104 KJ

To find the change in internal energy;

Mathematically, the change in internal energy of a system is given by the formula;

DU = Q - W

Where;

DU is the change in internal energy.

Q is the quantity of energy.

W is the work done.

Substituting into the formula, we have;

DU = 125 - 104

DU = 21 KJ

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Which of these experiments would make use of qualitative data
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It has to due with numbers so I would say the last one!
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Answer:

50 meters

Explanation:

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v_f=v_o+at

Since the car starts at rest, you can write the following equation:

20=0+a(5) \\\\a=20\div 5=4 m/s^2

Now that you have the acceleration, you can do this:

d=v_o+\dfrac{1}{2}at^2

Once again, there is no initial velocity:

d=\dfrac{1}{2}(4)(5)^2=2 \cdot 25=50m

Hope this helps!

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According to a college survey, 22% of all students work full time. find the mean for the number of 3) students who work full tim
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E[x] = np = (16)(0.22) = 3.52 
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3 years ago
According to the Big Bang Theory, the density and temperature of the Universe is ___________ now than in the past.
34kurt

Answer:

According to the Big Bang Theory, the density and temperature of the Universe is <u>lower</u> now than in the past.

<em>Hope</em><em> this</em><em> answer</em><em> correct</em><em> </em><em>:</em><em>)</em>

5 0
3 years ago
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