1,318 Answered Questions for the topic physical science

Physical Science

01/16/19

A hot dog bun (volume 260 cm3) with a density of 0.16 g/cm3 is crushed in a picnic cooler into a volume of 145 cm3. What is the new density of the bun?
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Physical Science

01/16/19

What is the volume when 8.30 kg of iron cans are melted, then cooled into a solid cube? [the density of iron cans is 7.87 g/cm3]
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Physical Science Geology

01/10/19

What physical characteristics of the bedrock are responsible for the oldest rock remaining at the highest elevation?
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Physical Science

12/21/18

Carbon burns in the presence of oxygen to give carbon dioxide. Which chemical equation describes this reaction?
carbon + oxygen + carbon dioxidecarbon + oxygen → carbon dioxidecarbon dioxide → carbon + oxygen carbon dioxide + carbon → oxygen
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Physical Science

12/21/18

What kind of chemical reaction does the chemical equation sodium + chlorine → sodium chloride represent?
CombustionDecompositionSingle ReplacementSynthesis
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Physical Science

12/20/18

speed and velocity
a car is driving west on a highway at 25 m/s. what is the car's km/h and velocity?
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Physical Science

12/17/18

do sound waves carry energy
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Physical Science

12/14/18

A force 300 N is applied to a box for 10 seconds in order to move the box 10 m. What is the power
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Physical Science

12/14/18

A person holding 30kg box 1m above the floor it down. How much work was done

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Physical Science

12/13/18

I need a step by step on how to do this problem...Anyone want to help?
What is the velocity of an 8 kg lead shot-put if it has 484 J of energy?
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Physical Science

12/13/18

Calculate her average speed in km/h.
A girl takes 30 minutes to travel around a cross-country ski course: a distance of 10 km. Calculate her average speed in km/h.
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Physical Science Solubility

12/08/18

How many grams of KNO3 can be dissolved in 200.0 mL of water at 35 Celsius
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Physical Science

12/07/18

science sounds i dont know what to do
Donna wants to calculate the speed at which a sound wave is traveling. She knows that the frequency of the wave is 680 hertz and that the wave has a wavelength of 0.5 meters.What is the speed of... more
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Physical Science

12/06/18

Which statment about a mixture is true?
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Physical Science

11/27/18

an automobile engine is 15 percent efficient. how many joules of input work are required to produce 15,000 joules of output work to move the car?
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Physical Science

11/27/18

The total amount of KE and PE contained by the particles in a sample of matter is what?
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Physical Science

10/29/18

You push a piano 5 meters across the floor with a force of 400 N. How much work have you done?
A. 2,000 JB. 19,600 JC. 80 JD. 400 J
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Physical Science Sciene

10/22/18

How do you find the acceleration of a 1,000kg car?
A force of 1500 N is applied to a 1,000 kg car. What is the acceleration of the car?
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Physical Science

10/18/18

A 52-V battery powers a pair of 36Ω resistor connected in series.What is the current flowing through the system? round to the nearest tenth
1.A 52-V battery powers a pair of 36Ω resistor connected in series.What is the current flowing through the system? round to the nearest tenth.2.A 52-V battery powers a pair of 36Ω resistor... more
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Physical Science Science

10/15/18

The actual formation of sugar occurs during the _____.
I’m very confused and can’t figure it out can someone please help me??
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Physical Science

10/15/18

A hot-air balloon contains 85,000 moles of air. To what temperature must the air be heated to fill a volume of 2500 m3 at a pressure of 100 kPa?
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Physical Science

09/20/18

Of elements in the same group those at the bottom of the periodic table have low ionization energies because?
 answer with a correct answer  
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Physical Science

09/18/18

which of the following is proper scientific notation for the number 18,200?
which of the following is proper scientific notation for the number 18,200? a. 18200 x 10^0 b. 182 x 10^2 c. 1.82 x 10^4 d. .182 x 10^5
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Physical Science

09/12/18

The distance between Connor and Mason is 75 miles. There are 1.6 km in a mile. How far is this in kilometers?
This is physical science is finding the difference between two different things
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Physical Science

09/06/18

The difference between heat and temperature is what?
This question is based of a heat and chemistry unit.
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