4 years ago

Is a calorie a measure of weight

Physics

2 answers:

Alla [95]4 years ago

6 0

No, a calorie is not a unit of weight, or of any other kind of force.

coldgirl [10]4 years ago

4 0

A calorie is a measure of energy

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inna [77]

Answer:

5g/cm

Explanation:

denisty=mass/volume

100/20

5g/cm

8 0

3 years ago

A sample of oxygen gas with a volume of 3.0 m3 is at 100 C. The gas is heated so that

vesna_86 [32]

$\qquad\qquad\huge\underline{{\sf Answer}}$

According to Charles law, if pressure remains constant, volume varies directly with temperature. so we can infer that :

$\qquad\sf{\dfrac{V_1}{T_1}=\dfrac{V_2}{T_2}}$

So, we can use this formula to find out the final temperature of the gas ~

Note : Take temperature in Kelvin ( 100°C = 373 K )

$\qquad \sf \dashrightarrow \: \dfrac{3}{373} = \dfrac{6}{x}$

$\qquad \sf \dashrightarrow \: x = \dfrac{6}{3} \times 373$

$\qquad \sf \dashrightarrow \: x = 2 \times 373$

$\qquad \sf \dashrightarrow \: x =74 6 \: K$

Now, convert it to Celsius ~

i.e 746 - 273 = 473° C

So, the final temperature of the gas will be equal to 473° C

6 0

2 years ago

When exiting the highway, a 1100-kg car is traveling at 22 m/s. The car's kinetic energy decreases by 1.4×105J The exit's speed

Vesna [10]

I think you want to determine the exit speed?

You have to determine how much velocity was decreased by calculating it from the kinetic energy.

KE = (1/2)mv²
1.4 x 10^5 = (1/2)*(1100)v²
v² = 254.55
v =15.95 m/s

So the velocity reduces by 15.95 m/s. Subtracting this to the initial velocity: 22 - 15.95 = 6.05 m/s.

So, the final speed was 6.05 m/s.

I hope I was able to help :)

7 0

3 years ago

Read 2 more answers

What are the SI units for work? A. Calories B. Watts C. Ergs D. Joules

fenix001 [56]

D Juuls is the Si unit for work.

8 0

4 years ago

Read 2 more answers

Arnold Schwarzenegger is moving out of his California mansion. He pushes a box of books on the floor with a force of 50 N to the

sleet_krkn [62]

A.draw in the forces .Use the scale 1cm =10n of force

3 0

4 years ago