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Physical Science

09/25/17

All phase changes require the addition of heat

asking about heat

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Physical Science

09/24/17

A 26.2 kg shell is fired from a 2,100 kg cannon with a velocity of 500 m/s. What is the resulting velocity of the cannon?

i need the answer

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Physical Science

09/16/17

IF YOU MULTIPLY AN OBJECT'S WEIGHT BY ITS HEIGHT WHAT VALUE DO YOU COMPUTE

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Physical Science

09/12/17

h and n is ionic or covalent

what is the ionic or covalent of h-n nn 1234567890-12345678901234567890

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Physical Science

09/04/17

why does a satellite (a moon) accelerate as it travels around the planet?

the moon travels around our planet so why does is it accelerating.

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Physical Science

08/22/17

Suppose you cut the magnetite sample in half.What is the density of each piece

Physical science

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Physical Science Physics Amplitude Frequency

07/31/17

the weight of 50N suspend from a spring vibrate vertically with amplitude of 8cm angular frequency(natural frequency) of 1 oscillation\sec

1)stiffness of the spring 2)find maximum velocity 3)find the maximum acceleration fn=1\2pi root of k\m fn= natural frequency w=mg g=9.81

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Physical Science

07/18/17

What is the K.E. of a 1325 kg car whose speed is 15 meters/sec?

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Physical Science

07/17/17

A motorcycle travels 866 meters in 19 seconds. What is its average speed? m/s

I quite don't understand how I get m/s?

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Physical Science

07/16/17

A train travels 74 kilometers in 1 hours, and then 87 kilometers in 4 hours. What is its average speed?

I would like to know the km and the hr on how fast the train was going.

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Physical Science

07/06/17

How does velocity effect the position when it's value is greater than zero

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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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Physical Science Physics College Help Inverse Square Law

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?

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Answers •2

Physical Science Physics College Help Archimedes Principle

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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Physical Science Physics College Help Physical Education

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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Physical Science Physics Helping Others Archimedes Principle

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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Physical Science Centripetal Force Physics Vectors

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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All phase changes require the addition of heat

A 26.2 kg shell is fired from a 2,100 kg cannon with a velocity of 500 m/s. What is the resulting velocity of the cannon?

IF YOU MULTIPLY AN OBJECT'S WEIGHT BY ITS HEIGHT WHAT VALUE DO YOU COMPUTE

h and n is ionic or covalent

why does a satellite (a moon) accelerate as it travels around the planet?

Suppose you cut the magnetite sample in half.What is the density of each piece

the weight of 50N suspend from a spring vibrate vertically with amplitude of 8cm angular frequency(natural frequency) of 1 oscillation\sec

What is the K.E. of a 1325 kg car whose speed is 15 meters/sec?

A motorcycle travels 866 meters in 19 seconds. What is its average speed? m/s

A train travels 74 kilometers in 1 hours, and then 87 kilometers in 4 hours. What is its average speed?

How does velocity effect the position when it's value is greater than zero

Inverse Square Law questions, urgent help! Please, answer all!

Inverse Square Law questions, urgent help! Please, answer all!

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

By the Archimedes' Principle, what about when the block has sunk to the bottom is true?

Based on the definition of specific heat and the information provide below, answer:

By the Archimedes' Principle, when a block is floating, which statement is true?

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

when measuring the volume of an object you are finding the what

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.

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 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?

What happens to mechanical energy when friction is involved?

the world record for pole vaulting is 6.15m. If the pole vaulter's gravitational potential is 4942 J, what is his mass ?

Is this correct?

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