11/22/20

What is the pressure of a gas (in torr)
What is the pressure of a gas (in torr) that undergoes isothermal expansion from 312 torr in a balloon of volume 1.61 L to a new volume of 3.56 L?
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11/22/20

please help on this questions

1.At what temperature was thermal equilibrium reached? How long did it take to arrive at this temperature?2.How does the temperature change within the first 60 seconds of the experiment? Within the... more
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11/22/20

2 candles in a supermarket

In the supermarket we can buy two different types of candles. · The first type is 20 𝑐𝑚 long when new and burns at a rate of 2.5 𝑚𝑚 per hour. · The second type is 24.5 𝑐𝑚 long when new... more
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11/22/20

What volume did the hydrogen occupy?
The total mass of the hydrogen gas in the Hindenburg zeppelin was 18,000 kg. What volume did the hydrogen occupy? (Assume that the temperature of the hydrogen was 0°C and that it was at a pressure... more
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11/22/20

Isabel is on her way home in her car. She has driven 36 miles so far, which is three-fourths of the way home. What is the total length of her drive?
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11/21/20

What volume did the hydrogen occupy?
The total mass of the hydrogen gas in the Hindenburg zeppelin was 18,000 kg. What volume did the hydrogen occupy? (Assume that the temperature of the hydrogen was 0°C and that it was at a pressure... more
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11/21/20

What is the benefit of using a closed system versus the open system used in lab?
Nutritionists use a calorimeter to determine the energy values of food. The calorimeter used is a closed system. What is the benefit of using a closed system versus the open system used in lab?
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11/16/20

Nine more than the product of a number 6 and equals 2.
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11/08/20

Starting from a wall outlet, trace back the source of energy as far as you can (Hint: At some point, the energy in electricity comes from something else, and so on, and so on. )
Starting with a wall outlet, trace back the source of energy as far as you can (Hint: At some point, the energy in electricity comes from something else. There is an ultimate source of the energy!)
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11/05/20

Please help me thanks
 A homeowner had a $19.50 electric bill in December. In January the bill was $21.26. Find the percent increase in the electric bill from December to January. (Round to the nearest whole number.)
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11/05/20

I don't understand What is the calculation I need to do and how do I get the answer?

Specific heat (C)is defined as the amount of heat (q) necessary to produce a temperature change (T) of 1°C per gram of substance. We can express this mathematically as: C = q m x ∆T (1) Where m... more
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11/05/20

Algebra 2 : Quadratic story problems
A ball, thrown by a lacrosse player, is modeled by the equation h(t)=-16t^2+70t+7 where h is the height of the ball( feet) t seconds after it has left the stick. Another player catches the ball... more
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11/05/20

PLEASE HELP ME! HAVING TROUBLE ASKING QUESTIONS WITH PICTURES!
I inserted a picture and the question, and wyzant says that it must be between 30 and 10,000 characters. (The description) The characters definitely go over 30, what can I do to fix?
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11/05/20

A bathtub originally contains 6 gallons of water.

A bathtub originally contains 6 gallons of water. A faucet is turned on and continues to fill the tub at a rate of 2 gallons per minute.How many total gallons of water are there in the bathtub when... more
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11/05/20

Suppose that the world's current oil reserves is R = 2190 billion barrels. If, on average, the total reserves is decreasing by 22 billion barrels of oil each year, answer the following:
Suppose that the world's current oil reserves is R=2190 billion barrels. If, on average, the total reserves is decreasing by 22 billion barrels of oil each year, answer the following:A.) Give a... more
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11/05/20

Find the distance between the 2 points: (-5,3) and (-2,-3)
This is for school please help and show work
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11/05/20

Mass, Volume, and Density
If the volume of an object is 5 cm3 and its mass is 55 g , what is its density?A. 11 g / cmˆ3B. 15 g / cmC. 50 cmˆ3 / gD. 275 g / cmˆ3Please help me find this answer :)
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11/05/20

Write an equation in slope-intercept form of the line that passes through (−5, 19) and (5, 13)
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11/05/20

write an equation of the line that passes through the given point and is parallel to the graph of the given equation.
please help me answer (2, -1);y = 5x - 2
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11/05/20

If 219 items are produced and sold, find the following:
Let the demand function for a product be given by the function D(q)=−1.1q+260, where q is the quantity of items in demand and D(q) is the price per item, in dollars, that can be charged... more
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11/04/20

What is the object's mass?
In an experiment performed in a space station, a force of 51 N causes an object to have an acceleration equal to 6 m/s2. What is the object's mass?
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11/04/20

Enter the equation of the line in slope-intercept form
The line perpendicular to y=-2x that passes (0,0) The equation of the line that passes through (0,0) is y=?
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11/02/20

What is the wavelength of the second photon emitted?
A ground state H atom absorbs a photon of energy 2.093 x 10^-18 J, and its electron attains a higher energy level. As the atom relaxes, it emits two photons: one of wavelength 1282 nm to reach an... more
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11/02/20

Mt. Washington Auto Road
The Mt. Washington Auto Road begins on Route 16 in Glen, NH at 1,600 feet of elevation and rises to a parking area just below the summit of Mt. Washington at 6,288 feet. The roadway is very steep... more
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11/02/20

using point slope form write the equation of the line through (1,-5) and perpindicular to -3x+2y=12
please help asap bc i have no idea how to do this
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