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3 years ago

Why is it incorrect to say "We ran out of gas", when referring to your cars energy source?

2 answers:

8 0

It's oil, but the thing is within an engine the oil through pressure changes changed said oil into a gas before it combusts. but yeah because it's a liquid I guess :DDDD

Allushta [10]3 years ago

3 0

Maybe it’s suppose to say fuel or something fossil fuel or something like that

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When Susan took the rice sock out of the microwave, it was nice and warm. She put it under her sister's neck. This worked great

gregori [183]

A) because they don’t look how they looked

4 0

3 years ago

What is the average density of the Earth?

Mekhanik [1.2K]

Answer:

5.513 grams per cubic centimeter

Explanation:

To get the exactly process for the calculation of the density of the earth is quite complex because earth is not quite a sphere. The planet's rotation causes it to bulge at the equator. Earth polar radius is 6,356 km and for the calculation of the mass we should have in count the metallic core inside the planet, more information can be read it in the following web site.

https://www.space.com/17638-how-big-is-earth.html#:~:targetText=Earth's%20mass%20is%206.6%20sextillion,and%2029%20percent%20by%20land.

6 0

4 years ago

You decide to travel by car for your holiday visits this year. You leave early in the morning to avoid congestion on the roads.

Bond [772]

Answer:

$d_t=266.918\ miles$ is the total distance of the trip travelled.

$s_{avg}=54.7895\ mph$ is the average speed of the journey

Explanation:

Given:

duration of first interval, $t_1=3.22\ hr$

speed during the first interval, $v_1=65.9\ mph$

duration of stoppage, $t_0=42.1\ min=0.7017\ hr$

duration of second interval, $t_2=0.95\ hr$

speed during second interval, $v_2=57.6\ mph$

<u>Now the total distance travelled:</u>

$\rm distance=speed\times time$

$d_t=v_2.t_2+v_1.t_1$

$d_t=57.6\times 0.95+65.9\times 3.22$

$d_t=266.918\ miles$

<u>The average speed:</u>

$\rm speed_{avg}=\frac{total\ distance}{total\ time\ taken}$

$s_{avg}=\frac{d_t}{(t_0+t_1+t_2)}$

$s_{avg}=\frac{266.918}{(0.7017+3.22+0.95)}$

$s_{avg}=54.7895\ mph$

4 0

4 years ago

g Design an experiment you can use to determine the mass of the metal cylinder. When you explain your experiment, be sure to men

kumpel [21]

Answer:

m = $\frac{k}{g}$ x,

graph of x vs m

Explanation:

For this exercise, the simplest way to determine the mass of the cylinder is to take a spring and hang the mass, measure how much the spring has stretched and calculate the mass, using the translational equilibrium equation

F_e -W = 0

k x = m g

m = $\frac{k}{g}$ x

We are assuming that you know the constant k of the spring, if it is not known you must carry out a previous step, calibrate the spring, for this a series of known masses are taken and hung by measuring the elongation (x) from the equilibrium position, with these data a graph of x vs m is made to serve as a spring calibration.

In the latter case, the elongation measured with the cylinder is found on the graph and the corresponding ordinate is the mass

3 0

3 years ago

Can someone please help solve this

kvasek [131]

1. T
2. T
3. F
4. T
5. F

4 0

3 years ago