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99 Answered Questions for the topic mass

Mass

11/03/16

The density for potassium is 0.856 g/cm3. What would be the mass of a 45 cm3 piece of potassium?

Cant seem to find the mass of potassium
Mass

11/03/16

The density for potassium is 0.856 g/cm3. What would be the mass of a 30 cm3 piece of potassium?

I dont know how to calculate the mass of 30cm3 piece of potassium  

10/22/16

An isotope of iron (Fe) has 26 protons and 32 neutrons.

An isotope of iron (Fe) has 26 protons and 32 neutrons.   a. What is the approximate mass of this isotope?   b. Write the symbol for this isotope.

06/01/16

What is the mass of the car?

A rollercoaster track provides 6400 N of centripetal force on a rollercoaster car. The car travels at a speed of 22 m/s as it rounds a horizontal curve with a radius of 15 m. What is the mass of... more
Mass Physics Speed

05/29/16

Physics Practice Problems

The following questions refer to a pop-up toy with a mass of 0.35 kg. The toy's spring compresses 0.04 m, and has a spring constant of 3,000 N/m.   How high does the pop-up toy go? What is the... more

04/21/16

Heat transfer between metal and water, what amount of water is boiled?

You place a very hot piece of aluminum (T=120 degrees C, c=900 J/(kg*degrees C) into a 500ml beaker of water that is already at an initial temperature of 90.0 degrees C. The mass of this piece of... more

03/17/16

What is the minimum speed required at the top of the track to ensure that the coaster does not leave the track?

1. A roller coaster has a mass of 500 kg and a radius of 9 m. What is the minimum speed required at the top of the track to ensure that the coaster does not leave the track?   a) 8.7 m/s b) 9.5... more

03/17/16

The following questions refer to a pop-up toy with a mass of .35 kg. The toy’s spring compresses .04 m and has a spring constant of 4,500 N.

The following questions refer to a pop-up toy with a mass of .35 kg. The toy’s spring compresses .04 m and has a spring constant of 4,500 N.   1. What is the spring potential energy before the... more

03/15/16

Force and Acceleration

A coaster has a mass of 800 kg and a radius of 5m. What is the minimum speed required at the top of the track to ensure that the coaster does not leave the track?May use:Fc = Fn +FgFc = MAcAc = v^2... more

03/07/16

Solving centripetal force using an equation

A roller coaster car of mass of 300 kg is going through a loop at a velocity of 15 m/s. If the loop has a radius of 12 m, what centripetal force is the roller coaster experiencing?   SHOW WORK

03/02/16

Separating mixtures in chemistry lab (PLEASE HELP. URGENT!)

You are to separate the two components of a mixture of sand and sugar. The initial mass of the mixture is 32.4563g. You found that the mass of sand was 19.5642g.    A) Describe the procedure you... more

02/18/16

Gold Density Question. IMPORTANT! NEED BY TOMORROW

A "pure gold" bracelet has a mass of 105.36 grams. When placed in a graduated cylinder which you read to contain 25.5 mL of water, the water level rises to read 32.0 mL. Find the density of pure... more

02/17/16

Specific Gravity/Mass PLEASE HELP URGENTTTT!!

The specific gravity of blood at 20 degrees Celsius is given as 1.028. Determine the mass of 1.50 litres of blood in grams and kilograms

02/17/16

Help explaining physics

Question: As the speed of a bicycle moving along a level horizontal surface changes from 2 m/s to 4 m/s, the magnitude of the bicycle's:   Multiple Choice: a. total energy remains the same b.... more

01/07/16

Momentum in a collision.

How is momentum conserved in a collision?   Explain using words, calculations, or both as well as physics terms.

12/17/15

Explain physics question and answer.

Ball A of mass 5 kilograms moving at 20 meters per second collides with ball B of unknown mass moving at 10 meters per second in the same direction.   A car traveling at 20 m/s has 1,000 J of... more

12/17/15

Explain total momentum in physics.

Ball A of mass 5 kilograms moving at 20 meters per second collides with ball B of unknown mass moving at 10 meters per second in the same direction.   When is total momentum greatest?   The... more

12/17/15

Explain momentum before a collision.

Ball A of mass 5 kilograms moving at 20 meters per second collides with ball B of unknown mass moving at 10 meters per second in the same direction.   Which ball has more momentum before the... more

12/17/15

Explain Physics Please.

Ball A of mass 5 kilograms moving at 20 meters per second collides with ball B of unknown mass moving at 10 meters per second in the same direction.   After the collision, ball A moves at 10... more

12/07/15

How do the forces required to stop each dummy compare?

Two safety dummies (of equal mass) are being used to test seat belts. Dummy A has a wide seat belt, and Dummy B has a narrow seat belt. Both dummies are crashed into a barrier while in the same... more

12/07/15

How does the pressure on each dummy compare?

Two safety dummies (of equal mass) are being used to test seat belts. Dummy A has a wide seat belt, and Dummy B has a narrow seat belt. Both dummies are crashed into a barrier while in the same... more

12/07/15

How do the forces required to stop each dummy compare? How does the pressure on each dummy compare?

Two safety dummies (of equal mass) are being used to test seat belts. Dummy A has a wide seat belt, and Dummy B has a narrow seat belt. Both dummies are crashed into a barrier while in the same... more

12/02/15

Two 1-kg carts are each moving toward each other at 2 m/s. They collide and each reverses directions, moving in the opposite directions at 2 m/s.

Two 1-kg carts are each moving toward each other at 2 m/s. They collide and each reverses directions, moving in the opposite directions at 2 m/s. Draw a diagram showing the carts before and after... more

11/28/15

Describe the collision between two vehicles of very different masses moving toward each other at equal speeds.

Describe the collision between two vehicles of very different masses moving toward each other at equal speeds in physics terms.

11/18/15

What will happen to the acceleration of the object?

A constant net force of 15 N acts on an object with a mass of 8 kg. As the mass of the object is increased, what will happen to the acceleration of the object? Explain.

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