1,314 Answered Questions for the topic physical science
08/27/18
How do you draw a lenses ray diagram ?
An object 1.5 cm high is located 7.00 cm in front of a converging lens that has a focal length of 5.00 cm. Draw the ray diagram to scale. Find the image distance, image height and the magnification...
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Physical Science
08/21/18
for a given substance under standard conditions , how do the temperatures of its solid,liquid, and gaseous states compare each other
i am in 8th grade at trinity christan school and are taking physical science
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Physical Science
08/20/18
which number should be placed in the blank of the equation balanced 3 H2 + N2 --- __ Nh3
what number goes in the blank
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Physical Science
07/28/18
A train travels 74 km in three hours and then 89 km in four hours what is its average speed .......... Answer Units
Need help pls
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Physical Science
07/26/18
what medal has Its mass is 13.5 grams, and its volume is 5 cm3.
what medal has Its mass is 13.5 grams, and its volume is 5 cm3.
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07/12/18
use a scientific calculator and round your answer to the nearest whole number.
The distance from Earth to the sun is about 1.49×1011 meters. The distance from Earth to the moon is about 3.84×108 meters. The distance from Earth to the sun is how many times larger than the...
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Physical Science
07/09/18
Newton’s first law of motion states that an object remains at rest unless a ____ force act on it
A.balenced
B.Frictional
C.gravitational
D.unbalenced
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07/02/18
Physical Science Math
Bismuth and fluorine react to form bismuth fluoride. If 417.96 g of bismuth reacts completely with 113.99 g of fluorine, how many grams of bismuth fluoride are formed?
07/02/18
Physical Science Math
Using Boyle's law, predict what will happen to a balloon that an ocean diver makes to a pressure of 202 kPa.
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06/29/18
Physical Science Math
A volume of helium occupies 1.0 L at a pressure of 98.0 kPa. What is the new volume if the pressure drops to 86.2 kPa? Show work.
06/29/18
Physical Science Math
A car weighing 15,000 N is on a hydraulic lift platform measuring 10 m2. What is the area of the smaller piston if a force of 1,100 N is used to lift the car? Please show work
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06/29/18
Physical Science Math
A car weighs 15,000 N and its tires are inflated to a pressure of 190,000 Pa. How large is the area of the car's tires that are in contact with the road? Please show work.
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Physical Science Gas Laws
06/28/18
Gas Laws Math
6. A container holding a gas at 500atm is held at 298K (room temperature). What is the pressure of the gas in the container when it is heated to 1000K? 7. Why is the situation in #6 dangerous?
Physical Science Gas Laws
06/28/18
Gas Laws Math
The pressure of a gas trapped inside a 10ml test tubeis originally 1atm. When the pressure on the tube is increased to 5atm, what will be the volume of gas trapped inside the cube?
Physical Science Gas Laws
06/28/18
Gas Laws Math
When 432L of Krypton gas is heated from 320K to 570K, it expands. What is the final volume of the gas?
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Physical Science Gas Laws
06/28/18
Gas Laws Math
A balloon is heated and expands to 500ml when it is heated to 490K. If the original temperature of the balloon was 300K, what was the original volume?
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Physical Science Gas Laws
06/28/18
Gas Laws Math
A pressure cooker is used to heat up food quickly. If the air in a pressure cooker is initially at 450K under a pressure of 100kPa, what will the pressure be when the temperature is increased to 600K?
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Physical Science Gas Laws
06/21/18
Physical Science Gas laws
500 ml of argon is held in a container under 20 atm of pressure. What will the volume of the gas be if the pressure is decreased to 14 atm
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Physical Science
06/20/18
Calcium has a charge of +2. The chart lists the charges of different ions. Which are possible equations for an ionic compound with calcium?
i dont understand this its about calcium and has a change of +2 this chart lists the differnts
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Physical Science
06/14/18
Hydrogen is the second most abundant gas in the atmosphere
It’s in physical science and it is also an true or false question
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Physical Science
06/03/18
If the DNA strand in a molecule could be stretched out, it would have a length on the order of 2.0 m. What would this be in feet?
Need answer to be in ft and inches
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Physical Science
05/29/18
How many liters of oxygen gas at STP are needed to combust 12.0 g of propane according to the reaction C3H8 + O2 ---> CO2 + H2O
I need help with this question and I have no idea where to start
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Physical Science
05/23/18
6.0 g of glass heated from 17c to 47c.how much energy was used to heat the glass?(specific heat capacity of glass is 0.664 j/g
I need help
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Physical Science
05/21/18
a train of waves is moving at a speed of 30 m/s the frequency of the waves is 10 Hz. what is the wavelength
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Physical Science
05/21/18
what is the mass of an object if a force of 34 N produces an acceleration of 4 m/s
need help
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