109 Answered Questions for the topic mass

Mass Velocity

07/11/17

identify mass, velocity, and more
Ball A, with a mass of 20 kilograms, is moving to the right at 20 meters persecond. At what velocity should ball B, with a mass of 40 kilograms, move sothey both come to a standstill upon... more
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04/10/17

mark has 8 packs of pretzels in a paper bag. Each pack of pretzels is 90 grams. the bag is 85 grams. What is the mass of the paper bag with the pretzels in it?
I need to find the mass of the paper bag
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02/08/17

What is the mass of 1.2 x 10^-3 moles of sodium chloride? – Show Work
What is the mass of 1.2 x 10^-3 moles of sodium chloride? – Show Work
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02/06/17

From gram to kilograms
One gram of gold cost 34.94. What is the cost of half a kilogram of gold?
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02/05/17

What size mass would you put on a spring (k = 17.6 N/m) so it would oscillate with the same period as a 0.45 m long pendulum? (Use 9.81 m/s2 for g).
Report your answer:in terms of kg. Do not include units in your answer. They will be assumed to be kg.to a precision of hundredths of a kg. Use a format like #.## in your answer.to an accuracy of... more
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01/08/17

Geometry word problems
 A square prism container with the base of 5 cm x 5 cm is partially filled with water. You drop a clip of metal with mass 525 g into the container, and the water level rises to centimeters. What is... more
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01/08/17

Geometry word problem.
Chemist dean dalton is given a clump of metal and is told that it is sodium. He finds that the metal has mass 145.5 g. He places it into a non reactive liquid in a quake prism whose base measures... more
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01/08/17

Geometry word problem
Which has more mass: A solid cylinder of gold with a height of 5 cm in a diameter of 6 cm or a solid cone of platinum with a high of 21 cm and a diameter of 8 cm? Prove your answer mathematically. 
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Mass

11/09/16

calculate the mass
A uniform meter rule of mass 90g is pivoted at the 40cm mark. If the rule is in equilibrium with an unknown mass M placed at the 10cm mark and a 72g mass at the 70cm mark, determine M
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Mass

11/03/16

The density for potassium is 0.856 g/cm3. What would be the mass of a 35 cm3 piece of potassium?
DOnt know how to find mass
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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
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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  
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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.
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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.
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