1,318 Answered Questions for the topic physical science

Physical Science Physics College Help

05/17/17

Inverse Square Law questions, urgent help! Please, answer all!
1. You are standing 10 meters from a light source. Then, you back away from the light source until you are 20 meters away from it. From your perspective, what has happened to the intensity of the... more
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05/15/17

Inverse Square Law questions, urgent help! Please, answer all!
1. You are standing 10 meters from a light source. Then, you back away from the light source until you are 20 meters away from it. From your perspective, what has happened to the intensity of the... more
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Physical Science

05/10/17

What is a main reason why the scientific model of atoms is considered a theory rather than a law?
What is a main reason why the scientific model of atoms is considered a theory rather than a law?
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05/10/17

By the Archimedes' Principle, what about when the block has sunk to the bottom is true?
1. The weight of the liquid displaced is less than the weight of the block.2. The weight of the liquid displaced is greater than the weight of the block.3. The weight of the liquid displaced is... more
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05/10/17

Based on the definition of specific heat and the information provide below, answer:
If the same amount of heat is added to 1 kg of all these substances, which substance will raise in temperature to the highest value?   Specific Heat Values (J/kg°C) of Different... more
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05/10/17

By the Archimedes' Principle, when a block is floating, which statement is true?
1. The weight of the liquid displaced is less than the weight of the block. 2. The weight of the liquid displaced is greater than the weight of the block. 3. The weight of the liquid displaced is... more
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Physical Science

05/03/17

where does the energy that is used to ride a bicycle up a hill come from and how is it classified?
 This is science
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Physical Science

05/01/17

when measuring the volume of an object you are finding the what
I it the single dimension of an object? Amount of two dimensional space an object? Amount of three dimensional space the object occupies? Or amount of four dimensional space an object occupies?
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Physical Science

04/30/17

A truck with a mass of 1000.0 Kg was at rest. An impulse was applied to the truck. The force was 200.0 N.
After the impulse was applied, the truck was moving at a velocity of 12.00 meters per second. How long was the time over which the impulse was applied?   A) 60.0 seconds  B) 30.0 seconds C)... more
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04/25/17

A mass of 1.00 Kg on the end of string that is 0.5 meters long is swung in a circle. The centripetal force is 5.0 Newtons. How fast is the mass moving?
A) 5.0 meters per second B) 2.0 meters per second C) 10.0 meters per second D) 1.0 meters per second E) 1.5 meters per second 
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Physical Science

04/24/17

A bicycle and its rider together have a mass of 61 kg. If the bicycle's speed is 13 m/s, how much force is needed to bring it to a stop in 6s?
I need help with my physical science class
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Physical Science

04/20/17

What happens to mechanical energy when friction is involved?
 I'm just wondering.. I don't really have any details about this...
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Physical Science

03/15/17

the world record for pole vaulting is 6.15m. If the pole vaulter's gravitational potential is 4942 J, what is his mass ?
using potential energy as the subject
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Physical Science Science Chemistry

03/14/17

Is this correct?
Match the vocabulary. 1.the ability to cause changes in matter                                                                      [x] Energy 2.the product of force and the distance through... more
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Physical Science

03/13/17

Find the mass of a wooden stick
1.Use a balance to find the mass of the wooden stick. 2.Add enough water to a graduated cylinder so that the stick can be completely submerged. Measure the initial volume of the water.3.Place the... more
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Physical Science

03/10/17

Water has a density of 1 g/cm3. If you placed a cork and a steel paper clip in a jar of water, what do you think would happen? Use your knowledge of density to
Water has a density of 1 g/cm3. If you placed a cork and a steel paper clip in a jar of water, what do you think would happen? Use your knowledge of density to explain the outcome.
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Physical Science

03/10/17

A cork has a volume of 5.0 cm3 and a mass of 1.2 grams. Calculate its density
A cork has a volume of 5.0 cm3 and a mass of 1.2 grams. Calculate its density
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Physical Science

03/10/17

Now determine the density of the steel bar if its mass is 2.34 kg. (Hint: Convert to grams first.)
Now determine the density of the steel bar if its mass is 2.34 kg. (Hint: Convert to grams first.)
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Physical Science

03/10/17

Calculate the volume of a steel bar with the following dimensions: Length = 5 cm Width = 2 cm Height = 30 cm
Calculate the volume of a steel bar with the following dimensions:Length = 5 cmWidth = 2 cmHeight = 30 cm
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Physical Science

03/10/17

Calculate the volume of a paperback book with the following dimensions: Length = 12 cm Width = 3 cm Height = 20 cm
Calculate the volume of a paperback book with the following dimensions:Length = 12 cmWidth = 3 cmHeight = 20 cm
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03/09/17

This means that the speed at which the bullet travels across the earth's surface (it's magnitude of horizontal velocity) does not affect __
This means that the speed at which the bullet travels across the earth's surface (it's magnitude of horizontal velocity) does not affect __
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Physical Science

03/05/17

What property do all metals have?
a)They are solids at room temperature? b)They conduct electricity. c)They are magnetic. d)They are brittle.
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Physical Science

03/05/17

Which of the following molecules is not a diatomic molecule
O2 Cl2 N2 H2O
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Physical Science

03/03/17

Can you help to find the acceleration of the traveling car?
A car traveling at 15m/s starts to decelerate steadily. It comes to a complete stop in 10 seconds. What is its acceleration?
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Physical Science

03/01/17

what is the force on a 10-kg ball falling freely due to the pull of gravity
I need help please I can't figure out this question and its due today
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